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GRUNDFOS DATA BOOKLET

DMHDosing pumps

PISTON DIAPHRAGM DOSING

Table of contents

2

DMH

1. Features and benefits 3

2. Performance range 6DMH 251-257 (50 Hz) 6DMH 280-288 (50 Hz) 6

3. Identification 7Type key 7

4. Functions 8Overview of possible capacity control functions 8Capacity control by stroke-length adjustment 8Capacity control by motor-frequency converter 9Capacity control by AR electronics (Etron Profi) 9

5. Construction 10General description 10DMH 251, 252 10DMH 253 11DMH 254 12DMH 255 13DMH 257 14DMH 280, 281 15DMH 283, 288 16DMH 285, 286, 287 17

6. Technical data 18Dimensions DMH 251-257 18Dimensions DMH 280-288 20Performance data DMH 251-257 21Performance data DMH 280-288 22Suction lift DMH models 251-257 23Suction lift DMH models 280-288 24Weight DMH models 251-257 25Weight DMH models 280-288 25Sound pressure 26Accuracy 26Permissible temperature of dosing liquid 26Lubricants 27

7. Selection of pump 28DMH 250 standard range (5 to 1500 l/h) 28DMH 280 standard range (2 to 222 l/h) 28DMH non-standard range (2.2 to 2 x 1500 l/h) 29

8. Accessories 31Overview of dosing system 31

9. Pumped liquids 32List of pumped liquids 32

10. Further product documentation 33WebCAPS 33WinCAPS 34

Feat

ures

and

ben

efits

DMH 1

1. Features and benefitsStrong hydraulic piston diaphragm dosingfrom 2.2 to 2* x 1150 l/h.

Fig. 1 DMH series

The preferred choice for complex tasksThe Grundfos DMH range is a series of extremely strong, robust pumps for situations where you need a substantial dosing range and high-pressure capability.The pumps are accurate to within ± 1 per cent of the rated flow, making the DMH series the preferred choice for complex tasks and automatic process integration. And their strength is a matter of public record: Customers worldwide have enjoyed years of trouble-free operation from their DMH pumps.

Get the pump configuration you needA number of different product configurations are available to match your requirements. For example, you can choose between electric or pneumatic servomotors, opt for an AC inverter-controlled motor, pick special dosing heads with electrical heating, or have your pumps fitted with double diaphragms with failure indication. If in doubt, ask your Grundfos consultant to help you choose the best configuration for the task.

Prepared for extreme situationsAMS diaphragm protection keeps both the pump and overall application protected against extensive high pressures in the event of blockages in the discharge line. Similarly, pressure relief valves protect the pump against excessive pressure in the system.

Stroke-length adjustment ensures precise dosingVery precise and accurate stroke-length adjustment, with setting carried out using a vernier scale, brings you optimum dosing with a repeatability of only ± 1 %.

Enjoy the full-PTFE diaphragmThe DMH pumps can shrug off almost anything. They are fitted with full-PTFE diaphragms, and the parts that come into contact with the liquids dosed are available in material combinations to suit virtually all dosing scenarios.

Ready for tough applicationsThe tough application areas within the power plants, oil refinery industry and dosing tasks under unfavourable climatic conditions can also benefit from the Grundfos DMH range. several models have been designed and approved in accordance with EU ATEX directives or API 675.

* All DMH pumps are available with two dosing heads.

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3

Features and benefits

4

DMH1

ServomotorTo facilitate automatic control of the flow rate, the DMH pumps can be equipped with an electric servomotor in a metal housing IP 65. The servomotor primarily consists of an overload-proof synchronous motor, reduction gear, feedback potentiometer 1000 Ω and min/max limit switches.The servomotor is connected to the stroke adjusting spindle of the dosing pump and adjusts the stroke length from 0 to 100 % with a rotation angle of 270 °.Apart from the standard version the following variants are also available:• Servomotors with different operating voltages.• With integrated electronics for 4-20 mA current

signals input/output with manual/automatic switches.

• ATEX version, IP rating Ex II 2 G EEX d IIB T4 for potentially explosive area zones 1, 2, 21, 22, with hand wheel for manual adjustment.

Fig. 2 DMH with servomotor

AR microprocessor electronics Etron ProfiConvenient electronics in a plastic housing IP65 for DMH pump types 251, 252, 253, 280 and 281 with AC motor.

Type variants• Etron Profi for mounting on the terminal box,

115/230 V, 50/60 Hz• Etron Profi for wall mounting, 115/230 V, 50/60 Hz,

5 m of cable to the pump

Operating modes for electronic control• Manual: stroke frequency manually adjustable from

1 up to the maximum strokes per minute• Pulse signal control: multiplier 1:n (n strokes per

coming pulse) and divisor n:1 (1 stroke per coming n pulses), memory function (stores a maximum of 65,000 pulses)

• Current signal control 0/4-20 mA: adjustment of stroke frequency proportional to the current signal, weighting of current input is possible

Inputs• Pulse signal• Current signal• Remote on/off• Tank-empty sensor• Dosing controller and diaphragm leakage sensor

Outputs• Current signal• Error signal (fault)• Stroke signal• Pre-alert signal

Fig. 3 DMH 252 with AR electronics

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Feat

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DMH 1

Stroke-frequency controlThe DMH pump option with integrated stroke sensor is especially designed for batch dosing and other mixing or filling tasks.The stroke sensor is an inductive proximity sensor, available with NAMUR, NC or PNP, NO output.For the control of stroke frequency we can deliver an electronic counting system in an IP 65 plastic housing for switchboard installation according to DIN 43700. Following the qualities:• 0.3" (7.6 mm) high, 6 digit display• Non-volatile memory (E2PROM)• Display scrolling (selectable)• Bi-directional counting• Preselection capability• Form C relay outputs• Solid-state current sinking outputs• Programmable timed outputs• Remote reset capability• Ability to lock out front panel functions• Front panel programmable decimal pointA 2-channel isolated switch amplifier is included.

Fig. 4 DMH with stroke-frequency control

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5

Performance range

6

DMH2

2. Performance range

DMH 251-257 (50 Hz)

Fig. 5 DMH 251-257, 0 to 1500 l/h

DMH 280-288 (50 Hz)

Fig. 6 DMH 280-288, 0 to 222 l/h

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12

2100

10

4

16

25

680 1150 1500

p [bar]

Q [l/h]

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12

00

50

100

200

50 105 222

p [bar]

Q [l/h]

Iden

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DMH 3

3. IdentificationType key

* Only pumps of 0.37 kW and below.** Please indicate the specification of the servomotor at your order.*** Motors for higher ambient temperature, higher humidity, motors with forced ventilation and anti-condensation heaters and VIK motors are available.

Please contact your Grundfos consultants.

Example: DMH 100- 10 B PP /E /T -F -G 1 B9B9 X E3

Type range Special variants

Maximum flow [l/h]G Pump housing grey cast iron

(instead of standard aluminium)Maximum pressure [bar]

Control variant Motor variant

B Standard (without control) E0 PTC motor for frequency controlS1 Stroke counter NAMUR, NC output E1 Motor type EEx de C T3, 3 x 400 V, 50 HzS2 Stroke counter PNP, NO output E2 Motor type EEx de C T4, 3 x 400 V, 50 HzAR* Analog/pulse control (Etron Profi) E3 API approval

AT3 Servomotor, 1 x 230 V 50/60 Hz supply, 4-20 mA control

ES Special motor variants***

Mains plug (only 1AC motors)

AT5 Servomotor, 1 x 115 V 50/60 Hz supply, 4-20 mA control

X No plugF EU (Schuko)

ATX** Servomotor, 1 x 24 V 50/60 Hz supply, 4-20 mA control

B USA, CanadaI Australia, New Zealand, Taiwan

AT6 Servomotor, 1 x 230 V 50/60 Hz, 4-20 mA, EEx d II BT 4

E Switzerland

Connection, suction/discharge

AT7 Servomotor, 1 x 115 V 50/60 Hz, 4-20 mA, EEx d II BT 4

B6 Pipe, 4/6 mmC2 Pipe, 8/10 mm

ATX** Servomotor, 1 x 245 V 50/60 Hz, 4-20 mA, EEx d II BT 4

C4 Pipe, 20/25 mm4 Tube, 6/9 mm

AT8 Servomotor, 1 x 230 V 50/60 Hz supply, 1 KΩ potentiometer control

6 Tube, 9/12 mmB9 Tube, 19/27 mm

AT9 Servomotor, 1 x 115 V 50/60 Hz supply, 1 KΩ potentiometer control

Q Tube, 19/27 mm and 25/34 mmS Tube, 3/8" / 1/2"

ATX** Servomotor, 1 x 24 V 50/60 Hz supply, 1 KΩ potentiometer control

A Threaded, Rp 1/4, femaleA1 Threaded, Rp 3/4, female

Dosing head variant V Threaded, 1/4" NPT, female

PP Polypropylene A9 Threaded, 1/2" NPT, malePV PVDF (polyvinylidene fluoride) A3 Threaded, 3/4" NPT, femalePVC Polyvinyl chloride A7 Threaded, 3/4" NPT, maleSS Stainless steel 1.4571 to EN 10027-2 (SS316Ti) B8 Cementing ∅40 mm and flange DN 32ST Stainless steel 1.4571 PTFE-coated B1 Tube 6/12 mm, cementing ∅12 mmY Stainless steel 2.4610 (Alloy C-4 to EN 10027-2) B2 Tube 13/20 mm, cementing ∅25 mmPP-L PP + integrated diaphragm leakage detection B3 Welding ∅16 mmPV-L PVDF + integrated diaphragm leakage detection B4 Welding ∅25 mmPVC-L PVC + integrated diaphragm leakage detection B7 Welding ∅40 mm and flange DN 32SS-L SS + integrated diaphragm leakage detection C1 Welding flange DN 32 SSY-L Y + integrated diaphragm leakage detection P Flange 1 ¼”

SS-H SS + heating flange in dosing head (electric) Valve type

Gasket material 1 Standard

E EPDM (ethylene propylene diene monomer) 2 Spring-loadedV FKM (fluorocarbon) 3 Spring-loaded, 0.05 bar suction, 0.8 bar dischargeT PTFE (polytetrafluoroethylene) 4 Spring-loaded, discharge side only

Valve ball material Supply voltage

C Ceramic 0 Without motor, ICE flangeG Glass F Without motor, NEMA flangeT PTFE (polytetrafluoroethylene)

G 1 x 230 V, 50/60 Hz (motors ≤ 0.09 kW)1 x 230 V, 50 Hz (motors 0.18 - 0.38 kW)SS Stainless steel 1.4401 to EN 10027-2 (SS316)

Y Stainless steel 2.4610 (Alloy C-4 to EN 10027-2)H 1 x 115 V, 50/60 Hz (motors ≤ 0.09 kW)

1 x 115 V, 60 Hz (motors 0.18 - 0.38 kW)Control panel position

X No control panel 5 255/440 V, 60 Hz (motors ≥ 0.75 kW)F Front-mounted

E 230/400 V, 50 Hz, 460 V, 60 Hz (IE2, motors ≥ 0.75 kW)230/400 V, 50/60 Hz, 440/480 V, 60 Hz (motors < 0.75 kW)W Wall-mounted

K 500 V, 50 Hz

7

Functions

8

DMH4

4. Functions

Overview of possible capacity control functionsDepending on the application, the DMH pumps can be equipped for different ways of the capacity setting and capacity control:• Manual control via stroke-length adjustment knob• Electric stroke-length adjustment with servomotor• Motor speed control with external frequency converter• AR electronics control (stroke frequency, pulse and analogue signal) for DMH 251, 252, 253, 280 and 281

Capacity control by stroke-length adjustmentFunctional descriptionThe capacity is controlled manually by means of the stroke-length adjusting knob or electrically by a servomotor. The stroke frequency remains constant.

Fig. 9 Relation between stroke-length adjustment and capacity

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Fig. 7 The capacity is controlled by adjusting the stroke length

Fig. 8 Relation between stroke length and capacity

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05

Q [l/h]

l [%]

Discharge

Suction

Duration

Discharge

Suction

Duration

Discharge

Suction

Duration

Capacity setting

100 %

50 %

10 %

Func

tions

DMH 4

Capacity control by motor-frequency converterAt DMH pumps with motors with PTC-resistor the capacity can be adjusted via a frequency converter by changing the motor speed.

Capacity control by AR electronics (Etron Profi)At DMH pump types 251, 252, 253, 280 and 281 with a single-phase motor and AR electronics the capacity is controlled by the regulation of the break times between strokes. This can be carried out via analogous or pulse signals or also via the manual setting of the stroke frequency.

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Fig. 10 Relation between motor frequency setting and capacity Fig. 11 Relation between motor frequency and capacity

Discharge

Suction

Duration

Discharge

Suction

Duration

Discharge

Suction

Duration

Motor frequency setting

Mot. freq. 100 Hz

Mot. freq. 50 Hz

Mot. freq. 10 Hz

Q [l/h]

f [Hz]

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Fig. 12 Relation between stroke frequency setting and capacity Fig. 13 Relation between stroke frequency and capacity

Discharge

Suction

Duration

Discharge

Suction

Duration

Discharge

Suction

Duration

Stroke frequency setting

Stroke-pause ratio 1:1



Q [l/h]

n [min-1]

9

Construction

10

DMH5

5. Construction

General descriptionThe series DMH are positive displacement dosing pumps with hydraulic diaphragm motion. DMH programme contains the low-pressure series DMH 250 up to 25 bar and the high-pressure series DMH 280 up to 200 bar. The pump range includes drive assemblies in three power rating sizes and single-head and double-head pumps.

DMH 251, 252

Functional principle• The rotational movement of the drive motor (1) is

converted via the worm gearing (2) and eccentric (3) into the oscillating suction and stroke movement of the piston (6).

• The piston has a hollow bore and a row of radial control holes, which provide a hydraulic connection between the drive area and the piston stroke area. The control slide (5) envelops the holes during the stroke and seals the stroke area from the drive area.

The hydraulic excursion of the solid PTFE diaphragm (10) displaces an equivalent volume of dosing liquid from the dosing head (11) into the dosing line. With the suction stroke, the piston creates a low pressure, which propagates in the dosing head; the ball valve (13) on the dosing side closes and the dosing liquid flows through the suction valve (12) into the dosing head.

• The stroke volume size is solely determined by the position of the control slide. The active stroke length and corresponding average dosing flow can therefore be changed continuously and linearly from 10 to 100 % using the stroke-length adjusting knob and nonius scale (14).

• The safety valve (7) is both a pressure relief valve and a permanent hydraulic oil degassing valve. It opens if the counterpressure in the dosing system is impermissibly high and thus protects the pump from overloading. The degassing valve ensures a constant, high dosing accuracy.

• The unique type of diaphragm protection system AMS (9) has a surface which rests on the dosing diaphragm (10). The diaphragm oscillates freely in the dosing head and cannot be overstretched by faults in the system since the diaphragm protection valve closes in the event of such a fault.

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Fig. 14 Sectional drawing DMH 251, 252

7813

12 9 325611 10

1

15

14

4

Pos. Description

1 Motor2 Worm gearing3 Eccentric4 Return spring5 Control slide6 Piston7 Combined pressure relief and degassing valve8 Oil degassing valve9 Diaphragm protection valve (AMS)

10 Dosing diaphragm11 Dosing head12 Suction valve13 Discharge valve14 Stroke-length adjusting knob15 Aeration screw with oil-level gauge

Con

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DMH 5

DMH 253



• The piston has a hollow bore and a row of radial control holes, which provide a hydraulic connection between the drive area and the piston stroke area. The control slide (5) envelops the holes during the stroke and seals the stroke area from the drive area. The hydraulic excursion of the solid PTFE diaphragm (10) displaces an equivalent volume of dosing liquid from the dosing head (11) into the dosing line. With the suction stroke, the piston creates a low pressure, which propagates in the dosing head; the ball valve (13) on the dosing side closes and the dosing liquid flows through the suction valve (12) into the dosing head.




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Fig. 15 Sectional drawing DMH 253

ce

7813

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1

15

14

Pos. Description

1 Motor2 Worm gearing3 Eccentric4 Return spring (some models excluded)5 Control slide6 Piston7 Combined pressure relief and degassing valve8 Oil degassing valve9 Diaphragm protection valve (AMS)


11

Construction

12

DMH5

DMH 254







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ec

713

12 9 325611 10 4

1

15

14

Pos. Description

1 Motor2 Worm gearing3 Eccentric4 Return spring (some models excluded)5 Control slide6 Piston7 Combined pressure relief and degassing valve9 Diaphragm protection valve (AMS)


Con

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DMH 5

DMH 255







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713

1

15

14

12 9 325411 10 6at DMH 550-10

Pos. Description

1 Motor2 Worm gearing3 Eccentric4 Return spring (some models excluded)5 Control slide6 Piston7 Combined pressure relief and degassing valve9 Diaphragm protection valve (AMS)


13

Construction

14

DMH5

DMH 257







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11


713

12 9 325611 10

1

15

14

Pos. Description

1 Motor2 Worm gearing3 Eccentric5 Control slide6 Piston7 Combined pressure relief and degassing valve9 Diaphragm protection valve (AMS)


Con

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DMH 5

DMH 280, 281







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781316

12 9 325611 10

1

15

14

Pos. Description

1 Motor2 Worm gearing3 Eccentric5 Control slide6 Piston7 Combined pressure relief and degassing valve8 Oil degassing valve9 Diaphragm-protection valve (AMS)

10 Dosing diaphragm11 Dosing head12 Suction valve13 Discharge valve14 Stroke-length adjusting knob15 Aeration screw with oil-level gauge16 Dosing head air vent valve (priming)

15

Construction

16

DMH5

DMH 283, 288.







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Fig. 20 Sectional drawing DMH 283, 288

781316

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15

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12 9 325611 10

Pos. Description



Con

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DMH 5

DMH 285, 286, 287



• The piston has a hollow bore and a row of radial control holes, which provide a hydraulic connection between the drive area and the piston stroke area. The control slide (5) envelops the holes during the stroke and seals the stroke area from the drive area.

The hydraulic excursion of the solid PTFE diaphragm (10) displaces an equivalent volume of dosing liquid from the dosing head (11) into the dosing line. With the suction stroke, the piston creates a low pressure, which propagates in the dosing head; the ball valve (13) on the dosing side closes and the dosing liquid flows through the suction valve (12) into the dosing head.




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Fig. 21 Sectional drawing DMH 285, 286, 287

781316

1

15

14

12 9 325611 10

Pos. Description



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Technical data

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DMH6

6. Technical dataDimensions DMH 251-257

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Fig. 22 Dimensions DMH models 251-257

Pump ModelA B C D D1 D2 E F Fx G H J K M Mx N X

[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]DMH 2.2-25 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 2.3-16 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 2.4-10 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 4.5-25 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 4.9-16 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 5-10 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 10-16 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 11-10 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 11-25 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 12-16 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 13-10 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 17-25 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 18-16 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 19-10 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 21-10 253 368 336 97.5 192 R 1 1/4 9 179 152 152 85.5 472 13 124 180 180 117.5 130.5DMH 21-25 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 23-16 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 23-16 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 24-10 251 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 24-10 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 36-16 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 37-10 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 43-10 253 368 336 97.5 192 R 1 1/4 9 179 152 152 85.5 472 13 124 180 180 117.5 130.5DMH 45-16 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 46-10 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 50-10 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 54-16 252 345 336 97.5 192 R 5/8 9 160 152 152 85.5 432 16 116 180 180 117.5 130.5DMH 67-10 253 368 336 97.5 192 R 1 1/4 9 179 152 152 85.5 472 13 124 180 180 117.5 130.5DMH 83-10 253 368 336 97.5 192 R 1 1/4 9 179 152 152 85.5 472 13 124 180 180 117.5 130.5DMH 97-16 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 100-10 253 368 336 97.5 192 R 1 1/4 9 179 152 152 85.5 472 13 124 180 180 117.5 130.5DMH 102-10 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 136-16 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 143-10 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258

Tech

nica

l dat

a

DMH 6

DMH 166-16 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 175-10 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 194-10 255 510 492 156 254 R 1 1/4 9 228 185 260 126 869 10 253 225 300 180 258DMH 202-16 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 213-10 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 220-10 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 270-10 255 510 492 156 254 R 1 1/4 9 228 185 260 126 869 10 253 225 300 180 258DMH 272-16 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 276-16 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 291-10 254 436 492 156 252 R 1 1/4 9 207 185 260 126 718 10 185 225 300 180 258DMH 332-10 255 510 492 156 254 R 1 1/4 9 228 185 260 126 869 10 253 225 300 180 258DMH 340-16 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 403-10 255 510 492 156 254 R 1 1/4 9 228 185 260 126 869 10 253 225 300 180 258DMH 440-10 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 450-16 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 520-16 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 550-10 255 510 492 156 254 R 1 1/4 9 228 185 260 126 869 10 253 225 300 180 258DMH 575-10 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 680-16 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 750-4 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 770-10 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 880-10 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 1150-10 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271DMH 1500-4 257 589 553 170 274 DN 32 9 280 241 333 128.5 980 25 262 290 382 194.5 271


[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]

19

Technical data

20

DMH6

Dimensions DMH 280-288

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Fig. 23 Dimensions DMH models 280-288


[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]DMH 1.3-200 280 365 336 97.5 192 R 3/8 9 142 152 152 85.5 465 16 114 180 180 117.5 130.5DMH-2-100 281 348 336 97.5 192 R 5/8 9 155 152 152 85.5 432 16 114 180 180 117.5 130.5DMH 2.2-200 280 365 336 97.5 192 R 3/8 9 142 152 152 85.5 465 16 114 180 180 117.5 130.5DMH 2.5-200 280 365 336 97.5 192 R 3/8 9 142 152 152 85.5 465 16 114 180 180 117.5 130.5DMH 3.3-200 288 425 492 156 155.5 R 5/8 9 208 185 260 126 700 10 173 225 300 180 258DMH 3.3-200 280 365 336 97.5 192 R 3/8 9 142 152 152 85.5 465 16 114 180 180 117.5 130.5DMH 4.2-100 281 348 336 97.5 192 R 5/8 9 155 152 152 85.5 432 16 114 180 180 117.5 130.5DMH 6.4-100 281 348 336 97.5 192 R 5/8 9 155 152 152 85.5 432 16 114 180 180 117.5 130.5DMH 7.5-200 288 425 492 156 155.5 R 5/8 9 208 185 260 126 700 10 173 225 300 180 258DMH 8-100 281 348 336 97.5 192 R 5/8 9 155 152 152 85.5 432 16 114 180 180 117.5 130.5DMH 9-200 287 490 553 170 274 R 5/8 9 208 240 333 129 814 25 176 290 382 194.5 271DMH 9.6-100 281 348 336 97.5 192 R 5/8 9 155 152 152 85.5 432 16 114 180 180 117.5 130.5DMH 10-100 283 437 493 156 254 R 1 1/4 9 211 185 260 126 706 10 182 225 300 180 258DMH 10-200 288 425 492 156 155.5 R 5/8 9 208 185 260 126 700 10 173 225 300 180 258DMH 13-200 288 425 492 156 155.5 R 5/8 9 208 185 260 126 700 10 173 225 300 180 258DMH 15-200 288 425 492 156 155.5 R 5/8 9 208 185 260 126 700 10 173 225 300 180 258DMH 18-200 287 490 553 170 274 R 5/8 9 208 240 333 129 814 25 176 290 382 194.5 271DMH 19-100 283 437 493 156 254 R 1 1/4 9 211 185 260 126 706 10 182 225 300 180 258DMH 20-100 285 510 553 145.5 274 R 1 1/4 9 179 240 333 129 820 25 187 290 382 194.5 271DMH 21-200 288 425 492 156 155.5 R 5/8 9 208 185 260 126 700 10 173 225 300 180 258DMH 23-200 287 490 553 170 274 R 5/8 9 208 240 333 129 814 25 176 290 382 194.5 271DMH 27-100 283 437 493 156 254 R 1 1/4 9 211 185 260 126 706 10 182 225 300 180 258DMH 31-200 287 490 553 170 274 R 5/8 9 208 240 333 129 814 25 176 290 382 194.5 271DMH 33-100 283 437 493 156 254 R 1 1/4 9 211 185 260 126 706 10 182 225 300 180 258DMH 36-200 287 490 553 170 274 R 5/8 9 208 240 333 129 814 25 176 290 382 194.5 271DMH 40-100 283 437 493 156 254 R 1 1/4 9 211 185 260 126 706 10 182 225 300 180 258DMH 40-100 285 510 553 145.5 274 R 1 1/4 9 179 240 333 129 820 25 187 290 382 194.5 271DMH 50-200 287 490 553 170 274 R 5/8 9 208 240 333 129 814 25 176 290 382 194.5 271DMH 52-100 285 510 553 145.5 274 R 1 1/4 9 179 240 333 129 820 25 187 290 382 194.5 271DMH 55-100 283 437 493 156 254 R 1 1/4 9 211 185 260 126 706 10 182 225 300 180 258DMH 70-100 285 510 553 145.5 274 R 1 1/4 9 179 240 333 129 820 25 187 290 382 194.5 271DMH 80-100 285 510 553 145.5 274 R 1 1/4 9 179 240 333 129 820 25 187 290 382 194.5 271DMH 85-50 286 510 553 145.5 274 R 1 1/4 9 234 240 333 129 820 25 191 290 382 194.5 271DMH 105-100 285 510 553 145.5 274 R 1 1/4 9 179 240 333 129 820 25 187 290 382 194.5 271DMH 111-50 286 510 553 145.5 274 R 1 1/4 9 234 240 333 129 820 25 191 290 382 194.5 271DMH 170-50 286 510 553 145.5 274 R 1 1/4 9 234 240 333 129 820 25 191 290 382 194.5 271DMH 222-50 286 510 553 145.5 274 R 1 1/4 9 234 240 333 129 820 25 191 290 382 194.5 271

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DMH 6

Performance data DMH 251-257

1) Maximum counterpressure2) Maximum flow is measured at maximum counterpressure. Max. flow is per dosing head (double-head pumps have double the flow rate)3) Motor for frequency control (100 Hz)4) Values in brackets apply to double-head pumps

Pump Model

50 Hz 60 Hz 100 Hz Motor power

Stroke volume

Max. press. 1) Max. flow 2) Stroke

frequency Max. flow 2) Stroke frequency Max. flow 2) Stroke

frequency Standard PTC 3)

[ml] [bar] [l/h] [n/min] [l/h] [n/min] [l/h] [n/min] [kW] [kW]DMH 2.2-25 251 3.5 25 2.2 14 2.6 17 4.4 29 0.09 0.18DMH 2.3-16 251 3.5 16 2.3 14 2.8 17 4.5 29 0.09 0.18DMH 2.4-10 251 3.5 10 2.4 14 2.9 17 5 29 0.09 0.09DMH 4.5-25 251 3.5 25 4.5 29 5.4 35 9 58 0.09 0.18DMH 4.9-16 251 3.5 16 4.9 29 5.9 35 9.8 58 0.09 0.09DMH 5-10 251 3.5 10 5 29 6 35 10 58 0.09 0.09DMH 10-16 252 6.4 16 10 29 12 35 20 58 0.18 0.18DMH 11-10 252 6.4 10 11 29 13 35 22 58 0.09 0.18DMH 11-25 251 3.5 25 11 63 13 75 22 126 0.09 0.18DMH 12-16 251 3.5 16 12 63 14 75 24 126 0.09 0.18DMH 13-10 251 3.5 10 13 63 16 75 25 126 0.09 0.09DMH 17-25 251 3.5 25 17 96 20 115 - - 0.09 -DMH 18-16 251 3.5 16 18 96 22 115 - - 0.09 -DMH 19-10 251 3.5 10 19 96 23 115 - - 0.09 -DMH 21-10 253 11.3 10 21 29 25 35 46 58 0.18 0.18DMH 21-25 251 3.5 25 21 120 - - - - 0.09 -DMH 23-16 251 3.5 16 23 120 - - - - 0.09 -DMH 23-16 252 6.4 16 23 63 27 75 46 126 0.09 0.18DMH 24-10 251 3.5 10 24 120 - - - - 0.09 -DMH 24-10 252 6.4 10 24 63 29 75 48 126 0.09 0.18DMH 36-16 252 6.4 16 36 96 43 115 - - 0.09 -DMH 37-10 252 6.4 10 37 96 44 115 - - 0.09 -DMH 43-10 253 11.3 10 43 63 52 75 87 126 0.18 0.18DMH 45-16 252 6.4 16 45 120 - - - - 0.18 -DMH 46-10 252 6.4 10 46 120 - - - - 0.09 -DMH 50-10 254 31.6 10 50 26 60 31 101 52 0.55 0.55DMH 54-16 252 6.4 16 54 144 - - - - 0.18 -DMH 67-10 253 11.3 10 67 96 78 115 - - 0.18 -DMH 83-10 253 11.3 10 83 120 99 144 - - 0.18 -DMH 97-16 254 31.6 16 97 54 116 65 193 108 0.55 0.55DMH 100-10 253 11.3 10 100 144 - - - - 0.18 -DMH 102-10 254 31.6 10 102 54 122 65 203 108 0.55 0.55DMH 136-16 254 31.6 16 136 75 163 90 271 150 0.55 0.55DMH 143-10 254 31.6 10 143 75 172 90 286 150 0.55 0.55DMH 166-16 254 31.6 16 166 92 200 110 - - 0.55 -DMH 175-10 254 31.6 10 175 92 210 110 - - 0.55 -DMH 194-10 255 60 10 194 54 233 65 387 108 0.55 0.55DMH 202-16 254 31.6 16 202 112 242 134 - - 0.55 -DMH 213-10 254 31.6 10 213 112 255 134 - - 0.55 -DMH 220-10 4) 257 131 10 220 28 264 34 440 56 1.1 1.5 (2.2)DMH 270-10 255 60 10 270 75 324 90 540 150 0.55 0.75DMH 272-16 4) 257 78.2 16 272 56 326 67 544 112 1.1 (1.5) 1.5 (2.2)DMH 276-16 254 31.6 16 276 153 - - - - 0.55 -DMH 291-10 254 31.6 10 291 153 - - - - 0.55 -DMH 332-10 255 60 10 332 92 398 110 - - 0.55 -DMH 340-16 4) 257 78.2 16 340 73 408 88 680 146 1.1 (1.5) 1.5 (2.2)DMH 403-10 255 60 10 403 112 484 134 - - 0.55 -DMH 440-10 257 131 10 440 56 528 67 880 112 1.1 1.5DMH-450-16 4) 257 78.2 16 450 98 540 118 1.1 (1.5) -DMH 520-16 4) 257 78.2 16 520 112 624 134 - - 1.1 (1.5) -DMH 550-10 255 60 10 550 153 - - - - 0.55 -DMH 575-10 257 131 10 575 73 690 88 1150 146 1.1 1.5DMH 680-16 4) 257 78.2 16 680 146 816 175 - - 1.1 (1.5) -DMH 750-4 257 171 4 750 73 900 88 1500 146 1.1 1.5DMH 770-10 257 131 10 770 98 924 118 - - 1.1 -DMH 880-10 257 131 10 880 112 1056 134 - - 1.1 -DMH 1150-10 4) 257 131 10 1150 146 - - - - 1.1 (1.5) -DMH 1500-4 257 171 4 1500 146 - - - - 1.1 -

21

Technical data

22

DMH6

Performance data DMH 280-288

1) Maximum counterpressure2) Maximum flow is measured at maximum counterpressure. Max. flow is per dosing head (double-head pumps have double the flow rate)3) Motor for frequency control (100 Hz)

Pump Model

50 Hz 60 Hz 100 Hz Motor power

Stroke volume

Max. press. 1) Max. flow 2) Stroke

frequencyMax. flow 2) Stroke

frequencyMax. flow 2) Stroke

frequencyStandard PTC 3)

[ml] [bar] [l/h] [n/min] [l/h] [n/min] [l/h] [n/min] [kW] [kW]DMH 1.3-200 280 0.36 200 1.45 63 1.74 76 2.9 126 0.18 0.18DMH-2-100 281 1.1 100 2 29 2.4 35 4 58 0.18 0.18DMH 2.2-200 280 0.36 200 2.22 96 2.66 115 - - 0.18 -DMH 2.5-200 280 0.36 200 2.81 120 3.37 144 - - 0.18 -DMH 3.3-200 288 2.33 200 3.6 26 4.3 31 7 52 0.55 0.55DMH 3.3-200 280 0.36 200 3.41 144 - - - - 0.18 -DMH 4.2-100 281 1.1 100 4.2 63 5 76 8.2 126 0.18 0.18DMH 6.4-100 281 1.1 100 6.4 96 7.7 115 - - 0.18 -DMH 7.5-200 288 2.33 200 7.5 54 9 65 15 108 0.55 0.55DMH 8-100 281 1.1 100 8 120 9.6 144 - - 0.18 -DMH 9-200 287 6 200 9 28 11 34 18 56 1.1 1.5DMH 9.6-100 281 1.1 100 9.6 144 - - - - 0.18 -DMH 10-100 283 6 100 10 27 12 32 20 54 0.55 0.55DMH 10-200 288 2.33 200 10.4 75 12.5 90 21 150 0.55 0.55DMH 13-200 288 2.33 200 12.8 92 15.4 118 - - 0.55 -DMH 15-200 288 2.33 200 15.5 112 18.6 134 - - 0.55 -DMH 18-200 287 6 200 18 56 22 67 36 112 1.1 1.5DMH 19-100 283 6 100 19 54 23 65 38 108 0.55 0.55DMH 20-100 285 12 100 20 28 24 34 40 56 1.1 1.5DMH 21-200 288 2.33 200 21 153 - - - - 0.55 -DMH 23-200 287 6 200 23 73 28 88 46 146 1.1 1.5DMH 27-100 283 6 100 27 75 32 90 54 150 0.55 0.55DMH 31-200 287 6 200 31 98 37 118 - - 1.1 -DMH 33-100 283 6 100 33 92 40 110 - - 0.55 -DMH 36-200 287 6 200 36 112 43 134 - - 1.1 -DMH 40-100 283 6 100 40 112 48 134 - - 0.55 -DMH 40-100 285 12 100 40 56 48 67 80 112 1.1 1.5DMH 50-200 287 6 200 50 146 - - - - 1.1 -DMH 52-100 285 12 100 52 73 63 88 105 146 1.1 1.5DMH 55-100 283 6 100 55 153 - - - - 0.55 -DMH 70-100 285 12 100 70 98 84 118 - - 1.1 -DMH 80-100 285 12 100 80 112 96 134 - - 1.1 -DMH 85-50 286 25.3 50 85 56 102 67.2 170 112 1.1 1.5DMH 105-100 285 12 100 105 146 - - - - 1.1 -DMH 111-50 286 25.3 50 111 73 133 87.6 222 146 1.1 1.5DMH 170-50 286 25.3 50 170 112 204 134 - - 1.1 -DMH 222-50 286 25.3 50 222 146 - - - - 1.1 -

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DMH 6

Suction lift DMH models 251-257The values refer to dosing liquids with the following characteristics:• newtonian and non-degassing• not containing suspended matter• density similar to water

1) Approximate values applying to the standard version of pumps2) The viscosity increases when the temperature decreases* Flooded suction

Pump Model

Max. suction lift depending on viscosity 2) of dosing liquid [m] Max. inlet

pressure [bar]

Min. counterpressure

at discharge valve [bar]

Max. permissible viscosity at operating temperature 1) [mPas]

Viscosity similar to water

Max. permissible viscosity

0 to 63 strokes/min

64 to 119 strokes/min

>119 strokes/min

DMH 2.2-25 251 1 0* 8 2 300 100 50DMH 2.3-16 251 1 0* 8 2 300 100 50DMH 2.4-10 251 1 0* 8 2 300 100 50DMH 4.5-25 251 1 0* 8 2 300 100 50DMH 4.9-16 251 1 0* 8 2 300 100 50DMH 5-10 251 1 0* 8 2 300 100 50DMH 10-16 252 1 0* 8 2 300 100 50DMH 11-10 252 1 0* 8 2 300 100 50DMH 11-25 251 1 0* 8 2 300 100 50DMH 12-16 251 1 0* 8 2 300 100 50DMH 13-10 251 1 0* 8 2 300 100 50DMH 17-25 251 1 0* 8 2 300 100 50DMH 18-16 251 1 0* 8 2 300 100 50DMH 19-10 251 1 0* 8 2 300 100 50DMH 21-10 253 1 0* 5 2 300 100 10DMH 21-25 251 1 0* 8 2 300 100 50DMH 23-16 251 1 0* 8 2 300 100 50DMH 23-16 252 1 0* 8 2 300 100 50DMH 24-10 251 1 0* 8 2 300 100 50DMH 24-10 252 1 0* 8 2 300 100 50DMH 36-16 252 1 0* 8 2 300 100 50DMH 37-10 252 1 0* 8 2 300 100 50DMH 43-10 253 1 0* 5 2 300 100 10DMH 45-16 252 1 0* 8 2 300 100 50DMH 46-10 252 1 0* 8 2 300 100 50DMH 50-10 254 1 0* 5 2 300 100 5DMH 54-16 252 1 0* 8 2 300 100 50DMH 67-10 253 1 0* 5 2 300 100 10DMH 83-10 253 1 0* 5 2 300 100 10DMH 97-16 254 1 0* 5 2 300 100 5DMH 100-10 253 0* 0* 5 2 300 100 10DMH 102-10 254 1 0* 5 2 300 100 5DMH 136-16 254 1 0* 5 2 300 100 5DMH 143-10 254 1 0* 5 2 300 100 5DMH 166-16 254 1 0* 5 2 300 100 5DMH 175-10 254 1 0* 5 2 300 100 5DMH 194-10 255 0* 0* 0.8 2 200 100 5DMH 202-16 254 1 0* 5 2 300 100 5DMH 213-10 254 1 0* 5 2 300 100 5DMH 220-10 257 1 0* 0.8 2 200 50 5DMH 270-10 255 0* 0* 0.8 2 200 100 5DMH 272-16 257 1 0* 0.8 2 200 50 5DMH 276-16 254 0* 0* 5 2 300 100 5DMH 291-10 254 0* 0* 5 2 300 100 5DMH 332-10 255 0* 0* 0.8 2 200 100 5DMH 340-16 257 0* 0* 0.8 2 200 100 5DMH 403-10 255 0* 0* 0.8 2 200 100 5DMH 440-10 257 1 0* 0.8 2 200 50 5DMH 450-16 257 1 0* 0.8 2 200 50 5DMH 520-16 257 0* 0* 0.8 2 200 50 5DMH 550-10 255 0* 0* 0.8 2 200 100 5DMH 575-10 257 1 0* 0.8 2 200 50 5DMH 680-16 257 0* 0* 0.8 2 200 50 5DMH 750-4 257 0* 0* 0.8 2 200 50 5DMH 770-10 257 1 0* 0.8 2 200 50 5DMH 880-10 257 0* 0* 0.8 2 200 50 5DMH 1150-10 257 0* 0* 0.8 2 200 50 5DMH 1500-4 257 0* 0* 0.8 2 200 50 5

23

Technical data

24

DMH6

Suction lift DMH models 280-288The values refer to dosing liquids with the following characteristics:• newtonian and non-degassing• not containing suspended matter• density similar to water

1) Approximate values applying to the standard version of pumps2) The viscosity increases when the temperature decreases* Flooded suction

Pump Model

Max. suction lift depending on viscosity 2) of dosing liquid [m] Max. inlet

pressure [bar]

Min. counterpressure

at discharge valve [bar]

Max. permissible viscosity at operating temperature 1) [mPas]

Viscosity similar to water

Max. permissible viscosity

0 to 63 strokes/min

64 to 119 strokes/min

>119 strokes/min

DMH 1.3-200 280 0* 0* 1 2 5 5 5DMH 2-100 281 0* 0* 1 2 5 5 5DMH 2.2-200 280 0* 0* 1 2 5 5 5DMH 2.5-200 280 0* 0* 1 2 5 5 5DMH 3.3-200 288 1 0* 5 2 100 50 5DMH 3.3-200 280 0* 0* 1 2 5 5 5DMH 4.2-100 281 1 0* 10 2 100 50 5DMH 6.4-100 281 1 0* 10 2 100 50 5DMH 7.5-200 288 1 0* 5 2 100 50 5DMH 8-100 281 1 0* 10 2 100 50 5DMH 9-200 287 1 0* 5 2 100 50 5DMH 9.6-100 281 1 0* 10 2 100 50 5DMH 10-100 283 1 0* 5 2 100 50 5DMH 10-200 288 1 0* 5 2 100 50 5DMH 13-200 288 1 0* 5 2 100 50 5DMH 15-200 288 1 0* 5 2 100 50 5DMH 18-200 287 1 0* 5 2 100 50 5DMH 19-100 283 1 0* 5 2 100 50 5DMH 20-100 285 1 0* 5 2 100 50 5DMH 21-200 288 1 0* 5 2 100 50 5DMH 23-200 287 1 0* 5 2 100 50 5DMH 27-100 283 1 0* 5 2 100 50 5DMH 31-200 287 1 0* 5 2 100 50 5DMH 33-100 283 1 0* 5 2 100 50 5DMH 36-200 287 1 0* 5 2 100 50 5DMH 40-100 283 1 0* 5 2 100 50 5DMH 40-100 285 1 0* 5 2 100 50 5DMH 50-200 287 1 0* 5 2 100 50 5DMH 52-100 285 1 0* 5 2 100 50 5DMH 55-100 283 1 0* 5 2 100 50 5DMH 70-100 285 1 0* 5 2 100 50 5DMH 80-100 285 1 0* 5 2 100 50 5DMH 85-50 286 1 0* 5 2 100 50 5DMH 105-100 285 1 0* 5 2 100 50 5DMH 111-50 286 1 0* 5 2 100 50 5DMH 170-50 286 1 0* 5 2 100 50 5DMH 222-50 286 1 0* 5 2 100 50 5

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DMH 6

Weight DMH models 251-257

The weight varies according to dosing head variant.The weights are approximate.

Weight DMH models 280-288

The weights are approximate.

Pump ModelWeight [kg]

Single-head pump Double-head pumpDMH 2.2-25 251 8-9.5 11-13DMH 2.3-16 251 8-9.5 11-13DMH 2.4-10 251 8-9.5 11-13DMH 4.5-25 251 8-9.5 11-13DMH 4.9-16 251 8-9.5 11-13DMH 5-10 251 8-9.5 11-13DMH 10-16 252 8-9.5 11-13DMH 11-10 252 8-9.5 11-13DMH 11-25 251 8-9.5 11-13DMH 12-16 251 8-9.5 11-13DMH 13-10 251 8-9.5 11-13DMH 17-25 251 8-9.5 11-13DMH 18-16 251 8-9.5 11-13DMH 19-10 251 8-9.5 11-13DMH 21-10 253 11.3-16 16-25DMH 21-25 251 8-9.5 11-13DMH 23-16 251 8-9.5 11-13DMH 23-16 252 8-9.5 11-13DMH 24-10 251 8-9.5 11-13DMH 24-10 252 8-9.5 11-13DMH 36-16 252 8-9.5 11-13DMH 37-10 252 8-9.5 11-13DMH 43-10 253 11.3-16 16-25DMH 45-16 252 8-9.5 11-13DMH 46-10 252 8-9.5 11-13DMH 50-10 254 32-37 46-56DMH 54-16 252 8-9.5 11-13DMH 67-10 253 11.3-16 16-25DMH 83-10 253 11.3-16 16-25DMH 97-16 254 32-37 46-56DMH 100-10 253 11.3-16 16-25DMH 102-10 254 32-37 46-56DMH 136-16 254 32-37 46-56DMH 143-10 254 32-37 46-56DMH 166-16 254 32-37 46-56DMH 175-10 254 32-37 46-56DMH 194-10 255 34-40 49-55DMH 202-16 254 32-37 46-56DMH 213-10 254 32-37 46-56DMH 220-10 257 50-56 49-51DMH 270-10 255 34-40 49-55DMH 272-16 257 50-56 49-55DMH 276-16 254 32-37 46-56DMH 291-10 254 32-37 46-56DMH 332-10 255 34-40 49-55DMH 340-16 257 50-56 49-51DMH 403-10 255 34-40 49-55DMH 440-10 257 50-56 49-51DMH 450-16 257 50-56 49-51DMH 520-16 257 50-56 49-51DMH 550-10 255 34-40 49-55DMH 575-10 257 50-56 49-51DMH 680-16 257 50-56 49-51DMH 770-10 257 50-56 49-51DMH 880-10 257 50-56 49-51DMH 1150-10 257 50-56 49-51DMH 1500-4 257 50-56 49-51

Pump ModelWeight [kg]

Single-head pump Double-head pumpDMH 1.3-200 280 13.7 20.4DMH 2-100 281 13 19DMH 2.2-200 280 13.7 20.4DMH 2.5-200 280 13.7 20.4DMH 3.3-200 288 36 54DMH 3.3-200 280 13.7 20.4DMH 4.2-100 281 13 19DMH 6.4-100 281 13 19DMH 7.5-200 288 36 54DMH 8-100 281 13 19DMH 9-200 287 48 74DMH 9.6-100 281 13 19DMH 10-100 283 36 54DMH 10-200 288 36 54DMH 13-200 288 36 54DMH 15-200 288 36 54DMH 18-200 287 48 74DMH 19-100 283 36 54DMH 20-100 285 46 67DMH 21-200 288 36 54DMH 23-200 287 48 74DMH 27-100 283 36 54DMH 31-200 287 48 74DMH 33-100 283 36 54DMH 36-200 287 48 74DMH 40-100 283 36 54DMH 40-100 285 46 67DMH 50-200 287 48 74DMH 52-100 285 46 67DMH 55-100 283 36 54DMH 70-100 285 46 67DMH 80-100 285 46 67DMH 85-50 286 48 74DMH 105-100 285 46 67DMH 111-50 286 48 74DMH 170-50 286 48 74DMH 222-50 286 48 74

25

Technical data

26

DMH6

Sound pressure

* Tested according to DIN 45635-01-KL3.

Accuracy

The values in the table above are based on the following conditions:

• dosing liquid: water• fully vented dosing head• standard version of pump.

Permissible temperature of dosing liquid

* For SIP/CIP applications, a temperature of 145 °C is permissible for a short time (approx. 15 min.) at p < 2 bar.(CIP = Cleaning-In-Place).(SIP = Sterilisation/Steaming-In-Place).

Pump rangeSound pressure level*

[dB(A)]DMH model 251 55 ± 5DMH model 252 55 ± 5DMH model 253 65 ± 5DMH model 254 65 ± 5DMH model 255 75 ± 5DMH model 257 75 ± 5DMH model 280 55 ± 5DMH model 281 55 ± 5DMH model 283 65 ± 5DMH model 285 75 ± 5DMH model 286 75 ± 5DMH model 287 75 ± 5DMH model 288 65 ± 5

Pump range Dosing flow fluctuation Linearity deviation

DMH 251-257 < ± 1.5 % within the 10 to 100 % control range

± 2 % of the full-scale value

DMH 280-288 < ± 1 % within the 10 to 100 % control range

± 1 % of the full-scale value

Dosing head material

Permissible temperature of dosing liquid

p < 10 bar p = 10-16 bar

[°C] [°C]PVC 0 to 40 0 to 20Stainless steel, 1.4571* –10 to 100 –10 to 100Stainless steel, 2.4610 (Alloy C-4)* –10 to 100 –10 to 100

PP 0 to 40 0 to 20

PVDF –10 to 60(70 °C at 9 bar) –10 to 20

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DMH 6

Lubricants

Special-oil alternatives to white oil (Parafin 55 DAB7)

Special-oil alternatives to DHG 68

Pump rangesingle-head pump double-head pump

Oil typeQuantity [l] Product number Quantity [l] Product number

DMH model 251 1.3 91835979 1.3 91835979 white oilDMH model 252, 10 bar 1.3 91835979 1.3 91835979 white oilDMH model 252, 16 bar 1.3 91835980 1.3 91835980 DHG 68DMH model 253 1.3 91835980 1.3 91835980 DHG 68DMH model 254 3.5 91835981 4.5 91835982 DHG 68DMH model 255 3.5 91835981 4.5 91835982 DHG 68DMH model 257 5.5 96607809 7.5 96729684 DHG 68DMH model 280 1.3 91835980 1.3 91835980 DHG 68DMH model 281 1.3 91835980 1.3 91835980 DHG 68DMH model 283 3.5 91835981 4.5 91835982 DHG 68DMH model 285 5.0 96607809 7.5 96729684 DHG 68DMH model 286 5.0 96607809 7.5 96729684 DHG 68DMH model 287 5.0 96607809 7.5 96729684 DHG 68DMH model 288 3.5 91835981 4.5 91835982 DHG 68

Manufacturer DesignationARAL Autin PL (DAB7)BP BP-Energol WM2ESSO Esso Marcol 82 (M82)Fina Fina Vestan A 70 BTexaco Texaco white oil pharmaceutical 70Shell Odina 15

Manufacturer DesignationARAL Degol BMB 68BP BP-Energol GR-XP 68Chevron Chevron NL gear compound 68ESSO Spartan BP 68Fina Fina Giran 68Mobil Oil Mobilgear 626Texaco Texaco Meropa 68Shell Tellus 68elf Reductelf SP 68

27

Selection of pump

28

DMH7

7. Selection of pumpDMH 250 standard range (5 to 1500 l/h)

DMH 280 standard range (2 to 222 l/h)

* Cutting ring connection

Max. flow

Max. pressure Material

Connection Type designation Product number

[l/h] [bar] Pump head Gasket Valve ball5 10 PVC FKM Glass 6/12 mm hose, 10/12 mm pipe DMH 5-10 B-PVC/V/G-X-E1B1B1 967225245 10 SS PTFE SS 1/4" female DMH 5-10 B-SS/T/SS-X-E1AA 96701570

13 10 PVC FKM Glass 6/12 mm hose, 10/12 mm pipe DMH 13-10 B-PVC/V/G-X-E1B1B1 9668629413 10 SS PTFE SS 1/4" female DMH 13-10 B-SS/T/SS-X-E1AA 9672132624 10 PVC FKM Glass 6/12 mm hose, 10/12 mm pipe DMH 24-10 B-PVC/V/G-X-E1B1B1 9672219424 10 SS PTFE SS 1/4" female DMH 24-10 B-SS/T/SS-X-E1AA 9668650237 10 PVC FKM Glass 6/12 mm hose, 10/12 mm pipe DMH 37-10 B-PVC/V/G-X-E1B1B1 9663997937 10 SS PTFE SS 1/4" female DMH 37-10 B-SS/T/SS-X-E1AA 9672318443 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 43-10 B-PVC/V/G-X-E1B2B2 9668682143 10 SS PTFE SS 3/4" female DMH 43-10 B-SS/T/SS-X-E1A1A1 9668682683 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 83-10 B-PVC/V/G-X-E1B2B2 9668689683 10 SS PTFE SS 3/4" female DMH 83-10 B-SS/T/SS-X-E1A1A1 95700573

100 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 100-10 B-PVC/V/G-X-E1B2B2 96723492100 10 SS PTFE SS 3/4" female DMH 100-10 B-SS/T/SS-X-E1A1A1 96686766143 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 143-10 B-PVC/V/G-X-E1B2B2 96686958143 10 SS PTFE SS 3/4" female DMH 143-10 B-SS/T/SS-X-E1A1A1 96724146175 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 175-10 B-PVC/V/G-X-E1B2B2 96686991175 10 SS PTFE SS 3/4" female DMH 175-10 B-SS/T/SS-X-E1A1A1 96724196213 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 213-10 B-PVC/V/G-X-E1B2B2 96687022213 10 SS PTFE SS 3/4" female DMH 213-10 B-SS/T/SS-X-E1A1A1 96687054270 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 270-10 B-PVC/V/G-X-E1B2B2 96687118270 10 SS PTFE SS 3/4" female DMH 270-10 B-SS/T/SS-X-E1A1A1 95704814332 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 332-10 B-PVC/V/G-X-E1B2B2 96687150332 10 SS PTFE SS 3/4" female DMH 332-10 B-SS/T/SS-X-E1A1A1 96687155403 10 PVC FKM Glass 13/20 mm hose, 20/25 mm pipe DMH 403-10 B-PVC/V/G-X-E1B2B2 96687172403 10 SS PTFE SS 3/4" female DMH 403-10 B-SS/T/SS-X-E1A1A1 96724668550 10 PVC FKM Glass 13/20 hose, 20/25 pipe-DN 32 flange DMH 550-10 B-PVC/V/G-X-E7B2B8 96638698550 10 SS PTFE SS 3/4" female / DN 32 flange DMH 550-10 B-SS/T/SS-X-E7A1C1 95706704770 10 PVC FKM Glass DN 32 flange DMH 770-10 B-PVC/V/G-X-E1B8B8 95729532770 10 SS PTFE SS DN 32 flange DMH 770-10 B-SS/T/SS-X-E1C1C1 957295511150 10 PVC FKM Glass DN 32 flange DMH 1150-10 B-PVC/V/G-X-E1B8B8 957295341150 10 SS PTFE SS DN 32 flange DMH 1150-10 B-SS/T/SS-X-E1C1C1 957295351500 4 PVC FKM Glass DN 32 flange DMH 1500-10 B-PVC/V/G-X-E1B8B8 957295361500 4 SS PTFE SS DN 32 flange DMH 1500-4 B-SS/T/SS-X-E1C1C1 95729537

Max. flow

Max. pressure Material

Connection Type designation Product number

[l/h] [bar] Pump head Gasket Valve ball85 50 SS PTFE SS 3/4" female DMH 85-50 B-SS/T/SS-X-E1A1A1 95711959111 50 SS PTFE SS 3/4" female DMH 111-50 B-SS/T/SS-X-E1A1A1 95729590170 50 SS PTFE SS 3/4" female DMH 170-50 B-SS/T/SS-X-E1A1A1 95711348222 50 SS PTFE SS 3/4" female DMH 222-50 B-SS/T/SS-X-E1A1A1 95710811

2 100 SS PTFE SS 1/4" female DMH 2-100 B-SS/T/SS-X-E2AA 9668755810 100 SS PTFE SS 3/4" female DMH 10-100 B-SS/T/SS-X-E2A1A1 9571469320 100 SS PTFE SS 3/4" female DMH 20-100 B-SS/T/SS-X-E2A1A1 9571469440 100 SS PTFE SS 3/4" female DMH 40-100 B-SS/T/SS-X-E2A1A1 9571608152 100 SS PTFE SS 3/4" female DMH 52-100 B-SS/T/SS-X-E2A1A1 9571479170 100 SS PTFE SS 3/4" female DMH 70-100 B-SS/T/SS-X-E2A1A1 95717251

105 100 SS PTFE SS 3/4" female DMH 105-100 B-SS/T/SS-X-E2A1A1 957172511.3 200 SS PTFE SS Pipe 4/6* DMH 1.3-200 B-SS/T/C-X-E2B6B6 957286592.2 200 SS PTFE SS Pipe 4/6* DMH 2.2-200 B-SS/T/C-X-E2B6B6 957092969 200 SS PTFE SS Pipe 8/10* DMH 9-200 B-SS/T/SS-X-E2C2C2 95729733

18 200 SS PTFE SS Pipe 8/10* DMH 18-200 B-SS/T/SS-X-E2C2C2 9572973631 200 SS PTFE SS Pipe 8/10* DMH 31-200 B-SS/T/SS-X-E2C2C2 9571458450 200 SS PTFE SS Pipe 8/10* DMH 50-200 B-SS/T/SS-X-E2C2C2 95721477

Sele

ctio

n of

pum

p

DMH 7

DMH non-standard range (2.2 to 2 x 1500 l/h)For further information about type codes see “Type key” on page 7.All DMH pumps are available with two dosing heads. Type key example: DMH 13-10\13-10 B-SS/V/SS-X-E1AAX E0.

* Not available with single-phase motor and therefore not with control variant AR** For standard variant leave empty

Max. flow & press. [l/h]-[bar]

Control variant

Materials Control panel position

Supply voltage

Valve type

Connectionsuction/discharge

Mains plug

Motor variant

Special variant**Head Gaskets Balls

DMH model 251, 252, DN 8

2.2-252.3-162.4-104.5-254.9-165-10

10-1611-1011-2512-1613-1017-2518-1619-1021-2523-1624-1036-1637-1045-1646-10

BS1S2ARAT3AT5AT6AT7AT8AT9ATX

PP

EC

XFW

0GHEF

1234

4466

A9A9B1B1B3B3

SS

BEFIX

E0E1E2E3

G

SST

V

CGKT

PVT

CT

V T

PVC

EC

SST

TCT

VCG

SS

SST SS

XFW

0GHEF

1234

AAA9A9

VV

BEFIX

E0E1E2E3

GV SS

ST T C

YT YV C

DMH model 253, 254, 255, DN 20

21-1043-1050-10*67-1083-1097-16*100-10102-10*136-16*143-10*166-16*175-10*194-10*202-16*213-10*270-10*276-16*291-10*332-10*403-10*550-10*

BS1S2ARAT3AT5AT6AT7AT8AT9ATX

PPE

SS

XFW

0GHEF

1234

A7A7B2B2B4B4B9B9QQ

BEFIX

E0E1E2E3ES

G

TT TV G

PTFE T C

PVT TV T

PVC

ESST

VCG

SS

SSE SS

XFW

0GHEF

1234

A1A1A3A3

BEFIX

E0E1E2E3ES

G

T SSV SS

ST T C

YT YV Y

DMH model 257, DN 32

220-10272-16340-16440-10450-16520-16575-10680-16770-10880-101150-101500-4

BS1S2AT3AT5AT6AT7AT8AT9ATX

PPE

G

XFW

0GHEF

1234

B5B5B7B7B8B8

KKPP

BEFIX

E0E1E2E3ES

G

TV G

PVT TV T

PVCE SSV G

SS

E SS

XFW

0GHEF

1234

AAC1C1C3C3

BEFIX

E0E1E2E3ES

GT

SST

V SSST T TY T Y

29

Selection of pump

30

DMH7

* Not available with single-phase motor and therefore not with control variant AR** For standard variant leave empty

Max. flow & press. [l/h]-[bar]

Control variant

Materials Control panel position

Supply voltage

Valve type

Connectionsuction/discharge

Mains plug

Motor variant

Special variant**Head Gaskets Balls

DMH, model 280, DN 4

1.3-2002.2-2002.5-2003.3-200

BS1S2ARAT3AT5AT6AT7AT8AT9

SS

E SS

XFW

0GHEF

12 B6B6

BEFIX

E0E1E2E3ES

GV SS

T SS

Y V Y

DMH, model 281, 287, 288, DN 8

2-1003-200*4.2-1006.4-1007.5-200*

8-1009-200*9.6-10010-200*13-200*16-200*18-200*21-200*23-200*31-200*36-200*50-200*

BS1S2ARAT3AT5AT6AT7AT8AT9

SS

E SS

XFW

0GHEF

12

VVAA

BEFIX

E0E1E2E3ES

G

V SS

T SS

Y V Y

DMH, model 283, 285, 286, DN 20

19-10020-10027-10033-10040-10052-10055-10070-10080-10085-50

105-100111-50170-50222-50

BS1S2AT3AT5AT6AT7AT8AT9

SS

E SS

X0EF

12

A1A1A3A3 X

E0E1E2E3ES

G

VC

SS

T SS

ST T C

Y V Y

Acc

esso

ries

DMH 8

8. AccessoriesOverview of dosing systemGrundfos offers a comprehensive range of accessories covering every need when dosing with Grundfos dosing pumps.

For more information about these and further accessories see separate Data Booklet Pump accessories.

TM03

212

4 18

11

Fig. 24 Overview of dosing system

1

2

3

4 5

6

79

10

8

Pos. Description

1 Dosing tank2 Electric agitator3 Extraction device4 Pulsation damper, suction side5 Dosing pump6 Pressure relief valve7 Pressure loading valve8 Pulsation damper, discharge side9 Flow meter

10 Injection unit

31

Pumped liquids

32

DMH9

9. Pumped liquids

List of pumped liquidsThis resistance table is intended to serve as a general guide only for material resistance (at room temperature) and is not a substitute for actual testing of the chemicals and pump materials under specific working conditions.The data shown is based upon information from various sources available, but be aware that many factors, such as purity, temperature, abrasive particles, etc. can affect the chemical resistance of a given material.Note: Some of the liquids in this table may be toxic, corrosive or hazardous.Note: Be careful when handling these liquids.

* According to EN 10027-2

Pumped liquid (20 °C)Material

Dosing head Gasket Ball

Description Chemical formula

Concentration [%]

PP PVD

F

SS 1

.457

1*(S

S316

Ti)

SS 2

.461

0*

Allo

y C

-4

SS

PTFE

-coa

ted

PVC

FKM

EPD

M

PTFE

Cer

amic

Gla

ss

Acetic acid CH3COOH25 – 60 – 85 – – –

Aluminium chloride AlCl3 40 – – Aluminium sulphate Al2(SO4)3 60 –Ammonia, aqueous NH4OH 28 – –Calcium hydroxide5 Ca(OH)2 Calcium hypochlorite Ca(OCl)2 20 –

Chromic acid3 H2CrO4

10 30 – – – 50 – – – –

Copper sulphate CuSO4 30 Ferric chloride1 FeCl3 100 – – Ferric sulphate1 Fe2(SO4)3 100 Ferrous chloride FeCl2 100 – – Ferrous sulphate FeSO4 50 Fluosilicic acid H2SiF6 40 – –

Hydrochloric acid HCl< 25 –

25-37 – Hydrogen peroxide H2O2 30

Nitric acid HNO3

10 30 40 – 70 – – –

Peracetic acid CH3COOOH 5-15 – Potassium hydroxide KOH 50 – – –Potassium permanganate KMnO4 10 Sodium chlorate NaClO3 30 Sodium chloride NaCl 30 – Sodium chlorite NaClO2 20 –

Sodium hydroxide NaOH20 –30 –50 – –

Sodium hypochlorite NaOCl 12-15 – – 6 Sodium sulphide Na2S 30 – –Sodium sulphite Na2SO3 20 – –Sodium thiosulfate Na2S2O3 10 Sulphurous acid H2SO3 6

Sulphuric acid2 H2SO4

< 80 – 80-96 – – –

98 – – – – Resistant 1 Risk of crystallisation

2 Reacts violently with water and generates much heat (pump should be absolutely dry before dosing sulphuric acid)3 Must be fluoride-free when glass balls are used5 Once the pump is stopped, calcium hydroxide will sediment rapidly6 Not resistant for sodium hypochlorite generated on site

Limited resistance– Not resistant

Furt

her

prod

uct d

ocum

enta

tion

DMH 10

10. Further product documentation

WebCAPSWebCAPS is a Web-based Computer Aided Product Selection program available on www.grundfos.com.WebCAPS contains detailed information on more than 185 000 Grundfos products in more than 20 languages.In WebCAPS, all information is divided into 6 sections:• Catalogue• Literature• Service• Sizing• Replacement• CAD drawings.

Catalogue

With a starting point in areas of applications and pump types, this section contains • technical data• curves (QH, Eta, P1, P2, etc) which can be adapted to the

density and viscosity of the pumped liquid and show the number of pumps in operation

• product photos• dimensional drawings• wiring diagrams• quotation texts, etc.

Literature

In this section you can access all the lastest documents of a given pump, such as• data booklets• Installation and operating instructions• service documentation, such as Service kit catalogue and

Service kit instructions• quick guides• product brochures, etc.

Service

This section contains an easy-to-use interactive service catalogue. Here you can find and identify service parts of both existing and cancelled Grundfos pumps.Furthermore, this section contains service videos showing you how to replace service parts.

33

Further product documentation

34

DMH10

WinCAPS

Fig. 25 WinCAPS CD-ROM

WinCAPS is a Windows-based Computer Aided Product Selection program containing detailed informtion on more than 185,000 Grundfos products in more than 22 languages.The program contains the same features and functions as WebCAPS, but is an ideal solution if no Internet connection is available.WinCAPS is available on CD-ROM and updated once a year.

Sizing

With a starting point in different application areas and installation examples, this section gives easy step-by-step instructions in how to• select the most suitable and efficient pump for your installation• carry out advanced calculations based on energy

consumption, payback periods, load profiles, lifecycle costs, etc.

• analyse your selected pump via the built-in lifecycle cost tool• determine the flow velocity in wastewater applications, etc.

Replacement

In this section you find a guide to select and compare replacement data of an installed pump in order to replace the pump with a more efficient Grundfos pump. The section contains replacement data of a wide range of pumps produced by other manufacturers than Grundfos.

Based on an easy step-by-step guide, you can compare Grundfos pumps with the one you have installed on your site. After having specified the installed pump, the guide suggests a number of Grundfos pumps which can improve both comfort and efficiency.

CAD drawings

In this section it is possible to download 2-dimensional (2D) and 3-dimensional (3D) CAD drawings of most Grundfos pumps.

The following formats are available in WebCAPS:

2-dimensional drawings• .dxf, wireframe drawings• .dwg, wireframe drawings.

3-dimensional drawings• .dwg, wireframe drawings (without surfaces)• .stp, solid drawings (with surfaces)• .eprt, E-drawings.

0 1

GRUNDFOS A/S . DK-8850 Bjerringbro . DenmarkTelephone: +45 87 50 14 00www.grundfos.com

The name Grundfos, the Grundfos logo, and the payoff Be–Think–Innovate are registrated trademarks owned by Grundfos Management A/S or Grundfos A/S, Denmark. All rights reserved worldwide.

Being responsible is our foundationThinking ahead makes it possible

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