automatic control valves m3000 / m2000eng] st. m 01 sta - m2000_m3000- [r9... · we reserve the...

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ST. M 01 ENG STA R9 04/18

AUTOMATIC CONTROL VALVES

M3000 / M2000



AUTOMATIC CONTROL VALVES

INDEX

Page

Introduction

Operating principle

Technical specifications

Materials

Dimensions and weights

Hydraulic specifications

- Pressure drop

- Cavitation

Valve operating parameters

Automatic control valve sizing

Product identification

Test facilities

Main functions

Accessories

Installation example

Main application

3

4

6

7

9

10

10

14

15

18

19

20

21

24

26

27



Automatic control valves, as described by EN 1074-5: “have the integral capability to control the function using energy from the conveyed water by adjusting the position of the obturator. They can be directly operated, i.e. the force is applied (via a spring or diaphragm) directly to the ob-turator. They can be pilot operated, i.e. the force is applied through an adjustable pilot valve”.

Automatic control valves M-Type are made for water supplies, irrigation and fire protection; they are the result of years of research, design and development. Valves are available in sizes from DN50 to DN1000 flanged according to EN 1092-2, with nominal pressure PN10-PN16-PN25.

The valves are hydraulically operated, that means, the metallic obturator is moved by a thin dia-phragm subject to water pressure.

The use of a high performance gasket ensures, even in harsh operating conditions, excellent seal and a long life of the valve.

M3000 valves are reduced port type (size of the port smaller than the nominal diameter of the

valve); this offer an improved regulating performance and higher dissipation capability.

M2000 valves are full port type (size of the port equal to the nominal diameter of the valve), recom-

mended for ON/OFF and for REGULATING applications with low differential pressure.

INTRODUCTION



“CLOSED VALVE” POSITION

The upstream pressure, which acts on the upper surface of the rubber diaphragm, moves the valve obturator to the closed position.

”OPEN VALVE” POSITION

By releasing the pressure in the control cham-ber, the obturator lifts and the valve opens.

PILOT

“Y” STRAINER

OPERATING PRINCIPLES

On-off valve



Modulating valve

CLOSE POSITION

The pilot loads the control chamber with the upstream pressure; the resultant force on the rubber diaphragm moves the obturator to the closed position.

MODULATING

The position of the obturator is adjusted by the equilibrium between the flow through the ori-fice (“Y” strainer) and the flow through the pi-lot.

OPEN POSITION

The pilot opens to release, through the pres-sure drop on the calibrated orifice, the pres-sure in the control chamber. The resultant force on the rubber diaphragm moves the ob-turator to the open position.

PILOT

“Y” STRAINER

CALIBRATED ORIFICE



TECHNICAL SPECIFICATIONS

CONSTRUCTION CHARACTERISTICS:

· Hydraulic test according to EN1074-5;

· Conform to EN 1074-5 and EN 1074-1;

· The parts in contact with water are conform to DM 174 of 6/04/2004, KTW, DVGW W270, WRAS;

· One-piece body made of ductile cast iron EN GJS 400-15 EN 1563 (GS 400-15);

· Face to face dimension according to EN 558 Series 1;

· Flange dimensions according to EN 1092-2;

· Stem made of 1.4301 EN10088-3 (AISI304) and guided at both ends;

· Seat ring made of 1.4408 EN10283 (AISI316);

· Seal retaining ring made of 1.4301 EN10088-3 (AISI304);

· Main seal made of EPDM;

· Spring made of 1.4310 EN10270-3 (AISI302);

· Obturator made of stainless steel 1.4401 EN10088-3 (AISI316), cast iron EN GJS 400-15 and coated steel

(depending on valve DN and PN);

· Diaphragm made of nylon reinforced NBR;

· All screws, washers and nuts made of stainless steel A2-70 EN ISO3506-1 (inside);

· External/Internal FBE coating protection (fusion bonded epoxy), blue RAL5015, thickness 250 μm.

MAIN VALVE ACCESSORIES:

· Depending on the working conditions V-PORT made of 1.4301 EN10088-3 (AISI304) or 1.4306 EN10088-3

(AISI304L) can be supplied;

· Depending on the working conditions DOUBLE DISSIPATING CYLINDER made of 1.4301 EN10088-3 (AISI304)

and 1.4401 EN10088-3 (AISI316) can be supplied;

CIRCUIT ACCESSORIES:

· Pipes made of 1.4401 EN10088-3 (AISI316), fittings made of 1.4401 EN10088-3 (AISI316);

. Pressure unions made of brass / 1.4401 EN10088-3 (AISI316);

· Strainer, speed regulator made of 1.4401 EN10088-3 (AISI316) and brass;

· Isolating ball valves made of Ni-plated brass;

· Pilots made of 1.4401 EN10088-3 (AISI316) and brass;

· Position indicators made of Hardened glass and brass;

· Pressure gauges case made of 1.4301 EN10088-3 (AISI304) and glycerine;

· Gauge holders with drainage made of Ni-plated brass;

· Floaters made of 1.4306 EN10088-3 (AISI304L).

Upon request, some parts can be produced by high corrosion-resistant materials:

* Stem and seal retaining ring and obturator from DN50 to DN125 made of 1.4401 EN10088-3 (AISI316); * screws, washers and nuts made of A4-70 EN ISO3506-1 stainless steel ; * V-PORT made of 1.4401 EN10088-3 (AISI316); * DOUBLE DISSIPATING CYLINDER made totally of 1.4401 EN10088-3 (AISI316).

CIRCUIT ACCESSORIES:

* Pipes, fittings, strainers, speed regulators, isolating ball valves, gauge holders made of 1.4401 EN10088-3 (AISI316); * Pilots made of 1.4401 EN10088-3 (AISI316) and brass; * screws, washers and nuts made of A4-70 EN ISO3506-1 stainless steel;

AVAILABLE HIGH CORROSION-RESISTANT MATERIALS

Valves are designed and manufactured to operate with drinking water and unfiltered water with size of suspended parti-cles max 2 mm. For any other use, please, contact the manufacturer.

· Working temp.: (Water temp.) min.+0°C max. (excluded frost) + 70°C (On request up to 90°C).

· Storage temp.: (Air temp.) min. - 20°C max. + 70°C.

OPERATIVE LIMITS



OPTIONAL

STANDARD MAIN VALVE MATERIALS



M3000 Item Description DN PN Material Material designation

1 Body Ductile cast iron EN-GJS 400-15 EN1563 (GS400)

2 Cover Ductile cast iron EN-GJS 400-15 EN1563 (GS400)

3 Stem Stainless steel 1.4301 EN10088-3 (AISI304)

4 Cover bearing Bronze CC333G CuAl10Fe5Ni5-C EN1982

5.1 Seat ring Stainless steel 1.4408 EN10283 (AISI316)

- V-port seat ring Stainless steel 1.4301 EN10088-3 (AISI304)

6 Seal retaining ring Stainless steel 1.4301 EN10088-3 (AISI304)

7 Obturator Da 50 a 150 10 - 16 - 25 Acciaio inossidabile 1.4401 EN10088-3 (AISI316)

Da 200 a 1000 10 - 16 Ghisa sferoidale EN-GJS 400-15 EN1563 (GS400)

Da 500 a 800 25 Acciaio S275JR EN10025-2 (Fe430B)

8.2 Spring washer Brass CW614N EN 12164 (OT58)

13 Main seal Elastomer EPDM (85Sh A)

14 Diaphragm Reinforced elastomer NYLON reinforced NBR

23.1 V-port Stainless steel 1.4301 EN10088-3 (AISI304)

40 Spring 50…600 10 - 16 - 25 Stainless steel 1.4310 EN10270-3 (AISI302)

41 Self-locking nut Stainless steel A2-70

50 Cover bolts Stainless steel A2-70

60 Seat ring bolts 200…1000 10 - 16 - 25 Stainless steel A2-70

61 Retaining ring bolts Stainless steel A2-70

70 Cover washer Stainless steel A2-70

110 - 111 112 - 113

O-Ring Elastomer EPDM

120 Pin 100…600 10 - 16

Stainless steel A2-70 150 - 200 25

All parts subject to corrosion are fusion bonded epoxy coated with thickness 250 micron

M2000 Item Description DN PN Material Material designation

1 Body Ductile cast iron EN-GJS 400-15 EN1563 (GS400)

2 Cover Ductile cast iron EN-GJS 400-15 EN1563 (GS400)

3 Stem Stainless steel 1.4301 EN10088-3 (AISI304)

4 Cover bearing Brass CW614N EN 12164 (OT58)

5.1 Seat ring Stainless steel 1.4408 EN10283 (AISI316)

- V-port seat ring Stainless steel 1.4301 EN10088-3 (AISI304)

6 Seal retaining ring Stainless steel 1.4301 EN10088-3 (AISI304)

7 Obturator From 50 to 100 10 - 16 - 25 Stainless steel 1.4301 EN10088-3 (AISI304)

150 - 200 10 - 16 - 25 Steel S275JR EN10025-2 (Fe430B)

8.1 Disc Steel S275JR EN10025-2 (Fe430B)

8.2 Spring washer Brass CW614N EN 12164 (OT58)

13 Main seal Elastomer EPDM (85Sh A)

14 Diaphragm Reinforced elastomer NYLON reinforced NBR

23.1 V-port Stainless steel 1.4301 EN10088-3 (AISI304)

40 Spring Stainless steel 1.4310 EN10270-3 (AISI302)

41 Self locking nut Stainless steel A2-70

50 Cover bolts Stainless steel A2-70

60 Seat ring bolts 150 - 200 10 - 16 - 25 Stainless steel A2-70

61 Retaining ring bolts Stainless steel A2-70

70 Cover washer Stainless steel A2-70

110 - 111 112 - 113

O-Ring Elastomer EPDM

All parts subject to corrosion are fusion bonded epoxy coated with thickness 250 micron



M3000

DN K D n x d Weight

(kg*) PN10 PN16 PN25 PN10 PN16 PN25 PN10 PN16 PN25 L H W

50 125 125 125 165 165 165 4-19 4-19 4-19 230 220 170 20

65 145 145 145 185 185 185 4-19 4-19 8-19 290 250 180 24

80 160 160 160 200 200 200 8-19 8-19 8-19 310 280 200 30

100 180 180 190 220 220 235 8-19 8-19 8-23 350 310 210 43

125 210 210 220 250 250 270 8-19 8-19 8-28 400 380 230 48

150 240 240 250 285 285 300 8-23 8-23 8-28 480 420 250 70

200 295 295 310 340 340 360 8-23 12-23 12-28 600 520 280 118

250 350 355 370 405 405 425 12-23 12-28 12-31 730 600 300 173

300 400 410 430 460 460 485 12-23 12-28 16-31 850 740 340 280

350 515 470 490 520 520 555 16-23 16-28 16-34 980 800 380 510

400 515 525 550 565 580 620 16-28 16-31 16-37 1100 810 390 550

500 620 650 660 670 715 730 20-28 20-34 20-37 1250 890 460 873

600 725 770 770 780 840 845 20-31 20-37 20-41 1450 970 540 1400

700 840 840 875 895 910 960 24-31 24-37 24-44 1650 1020 590 1950

800 950 950 / 1015 1025 / 24-34 24-41 / 1850 1070 640 2050

1000 1160 1170 / 1230 1255 / 28-37 28-44 / 2250 1360 820 4500

*indicative weight related to PN25 version

DIMENSIONS AND WEIGHTS

M2000

DN K D nxd Weight

(kg*) PN10 PN16 PN25 PN10 PN16 PN25 PN10 PN16 PN25 L H W

50 125 125 125 165 165 165 4-19 4-19 4-19 230 220 170 20

65 145 145 145 185 185 185 4-19 4-19 8-19 290 250 180 24

80 160 160 160 200 200 200 8-19 8-19 8-19 310 280 200 30

100 180 180 190 220 220 235 8-19 8-19 8-23 350 310 210 43

150 240 240 250 285 285 300 8-23 8-23 8-28 480 420 250 90

200 295 295 310 340 340 360 8-23 12-23 12-28 600 520 280 142



M3000 PRESSURE DROPS

Pressure drops of automatic control valves can be evaluated by using below equation:

P = (Q / Kv)2 [bar]

Where:

• P = pressure drop [bar]

• KV = flow coefficient [m3/h]

• Q = flow rate [m3/h]

KVS flow coefficient indicates 20°C water flow rate [m³/h] through the fully open valve that produces 1bar pres-sure drop.

HYDRAULIC SPECIFICATIONS

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0% 20% 40% 60% 80% 100%Kv%

L%

Sug

gest

ed o

pera

ting

area

Zon

a di

lavo

ro c

onsi

glia

ta

LIFT - KV DIAGRAM

RE

CO

MM

EN

DE

D

OP

ER

AT

ING

AR

EA

Flow coefficient at L% opening Kv = Kv% * Kvs

Flow coefficient of fully open valve Kvs

Kv% From the above diagram

L%

M3000 HYDRAULIC SPECIFICATIONS

DN 50 65 80 100 125 150 200 250 300 400 500 600 700 800 1000 350

Kvs [m³/h] 25 50 70 102 208 230 390 650 980 1790 2800 3800 5100 6100 10500 1420

Corsa [mm] 12 19,5 20,5 23,5 38 38 45 58 63 87 102 124 130 145 195 73



0,1

1

10 100 1000 10000

Perd

ite

di c

aric

o [

bar]

Portata [m3/h]

M3000

M3000 PRESSURE DROP DIAGRAM (100% OPEN VALVE)

The tables shall be used for the preliminary selection of valve nominal diameter. The appropriate DN will be chosen by using the sizing program developed by T.I.S Nuoval. Please contact us providing valve’s required operating conditions. Above data are valid for valves with standard obturator (without V-port).

PR

ES

SU

RE

DR

OP

P

(b

ar)

FLOW RATE Q (m³/h)

M3000 RECOMMENDED FLOW RATE

DN Low headloss Advisable Irrigation

Min allowed Max allowed Fire protection

l/s m3/h l/s m

3/h l/s m

3/h l/s m

3/h l/s m

3/h

50 4,1 14,6 6,0 21,6 8,0 28,6 0,9 3,2 8,8 31,8

65 6,9 24,7 10,2 36,6 13,4 48,4 1,5 5,4 14,9 53,8

80 7,6 27,5 11,3 40,6 14,9 53,8 1,7 6,0 16,6 59,7

100 11,6 41,6 17,1 61,5 22,6 81,4 2,5 9,0 25,1 90,5

125 23,5 84,5 34,7 124,9 45,9 165 5,1 18,4 51,0 184

150 28,2 102 41,7 150 55,2 199 6,1 22,1 61,4 221

200 40,6 146 60,1 216 79,5 286 8,8 31,8 88,4 318

250 113 406 167 601 221 795 24,5 88,4 245 884

300 163 585 240 865 318 1145 35,3 127 353 1272

350 221 797 327 1178 433 1559 48 173 481 1732

400 289 1040 427 1538 565 2036 62,8 226 628 2262

500 452 1626 668 2403 884 3181 98,2 353 982 3534

600 650 2341 961 3461 1272 4580 141 509 1414 5089

700 885 3187 1308 4711 1732 6234 192 693 1924 6927

800 1156 4162 1709 6152 2262 8143 251 905 2513 9048

1000 1806 6503 2670 9613 3534 12723 393 1414 3927 14137

DN

50

D

N6

5

DN

80

DN

10

0

DN

12

5

DN

15

0

DN

20

0

DN

25

0

DN

30

0

DN

35

0

DN

40

0

DN

50

0

DN

60

0

DN

70

0

DN

80

0

DN

10

00



M2000 PRESSURE DROPS

Pressure drops of automatic control valves can be evaluated by using below equation:

P = (Q / Kv)2 [bar]

Where:

• P = pressure drop [bar]

• KV = flow coefficient [m3/h]

• Q = flow rate [m3/h]

KVS flow coefficient indicates 20°C water flow rate [m³/h] through the fully open valve that produces 1bar pres-sure drop.

M2000 HYDRAULIC SPECIFICATIONS

DN 50 65 80 100 150 200

Kvs [m³/h] 44 68 94 160 350 590

Lift [mm] 15 18 20 25 39 50

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0% 20% 40% 60% 80% 100%Kv%

L%

Sug

gest

ed o

pera

ting

area

Zon

a di

lavo

ro c

onsi

glia

ta

LIFT - KV DIAGRAM

Flow coefficient at L% opening Kv = Kv% * Kvs

Flow coefficient at fully open valve Kvs

Kv% From the above diagram

RE

CO

MM

EN

DE

D

OP

ER

AT

ING

AR

EA

L%



The tables shall be used for the preliminary selection of valve nominal diameter. The appropriate DN will be chosen by using the sizing program developed by T.I.S Nuoval. Please contact us providing valve’s required operating conditions. Above data are valid for valves with standard obturator (without V-port).

DN

50

D

N65

D

N80

D

N100

D

N150

D

N200

PR

ES

SU

RE

DR

OP

P

(b

ar)

FLOW RATE Q (m³/h)

M2000 PRESSURE DROP DIAGRAM (100% OPEN VALVE)

M2000 RECOMMENDED FLOW RATE

DN Low headloss Advisable Irrigation

Min Max Fire protection

l/s m3/h l/s m

3/h l/s m

3/h l/s m

3/h l/s m

3/h

50 4,5 16,3 6,7 24,0 8,8 31,8 1,0 3,5 9,8 35,3

65 7,6 27,5 11,3 40,6 14,9 53,8 1,7 6,0 16,6 59,7

80 11,6 41,6 17,1 61,5 22,6 81,4 2,5 9,0 25,1 90,5

100 18,1 65,0 26,7 96,1 35,3 127 3,9 14,1 39,3 141

150 40,6 146 60,1 216 79,5 286 8,8 31,8 88,4 318

200 72,3 260 107 385 141 509 15,7 56,5 157 565



The stream velocity is not constant through the valve and assumes the higher values close to the valve seat (vena contracta). This produces a significant local reduction of the pressure. The higher the valve pressure drop ΔP, the higher the local stream velocity, the lower the local pressure. If, due to high valve pressure drop, the pressure in the vena contracta pressure is reduced down to the vapor pressure, small bubbles of vapour develop. Downstream the vena contracta, the pressure increases again and the steam bubbles rapidly implode, dissi-pating high rates of energy and generating strong pressure waves. Pressure waves produce intense surficial stress on the valve. Pressure drop must therefore be contained in order to avoid noise and erosion of the valve. The valve operating conditions can be preliminary checked by using the cavitation diagram below. The valve shall not continuously operate under cavitation risk. It can be accepted that the valve operates under light cavitation conditions for short periods.

Cavitation diagram refers to 40% open valves. When the opening degrees of the valve significantly differs from this val-ue, we recommend to verify the actual cavitation conditions by using the software specifically developed by T.I.S Nuoval. Please contact us providing valve’s required operating conditions.

CAVITATION RISK

NO CAVITATION

Upstr

eam

pre

ssu

re P

IN [

ba

r]

CAVITATION DIAGRAM

Downstream pressure POUT [bar]

CAVITATION



VALVE OPERATING PARAMETERS

M3000 and M2000 automatic control valves shall operate within the following limits. Should deviations occur, please, contact the manufacturer.

Valve min pressure drop 0.3 bar

Valve max pressure drop See diagram pag.10-12

Valve min inlet pressure 0.5 bar

Max flow velocity 5 m/s (referred to the valve nominal diameter)

Recommended opening degree Regulating valve: L% = 25% ÷ 75%

On-off valve: L% = 0-100%

VALVE SIZING DATA

For a proper analysis of the valve, T.I.S Nuoval uses a sizing software internally developed (pag.21). Please provide us valve’s required operating conditions. See data table for valve sizing in the above picture.

DATA TABLE FOR VALVE SIZING

QMAX QMIN

Q m3/h

PIN bar

POUT bar

DNPIPE mm

Q = Flow rate (maximum & minimum) PIN = Pressure shall be read on a manometer installed on the inlet flange of the valve at maximum / minimum flow rate. POUT= Pressure shall be read on a manometer installed on the outlet flange of the valve at maximum / minimum flow rate.



AUTOMATIC CONTROL VALVE SIZING (example)

Fill-in “DATA TABLE FOR VALVE SIZING” pag.15:

Water supply application. Preliminary valve diameter selection. From table "M3000 RECOMMENDED FLOW RATE" (pag.14), in the column “ADVISABLE”, read the nominal diameter in correspondence to the QMAX = 65m3/h (DN100).

From table"M3000 HYDRAULIC SPECIFICATIONS" (pag.13) read the Kvs (68 m3/h).

Determination of maximum and minimum opening valve degree. Kv = Q / √(PIN-POUT)

KvQMAX = 65 / √(6-3) = 37.5 m3/h (at MAX flow rate “QMAX”) which corresponds to Kv% = Kv/Kvs = 37.5 / 68= 0.55 (55%).

KvQMIN = 36 / √(8-3) = 16 m3/h (at MIN flow rate “QMIN”) which corresponds to Kv% = Kv/Kvs = 16 / 68= 0.23 (23%). Continues on next page ...

DATA TABLE FOR VALVE SIZING

QMAX QMIN

Q 65 36 m3/h

PIN 6 8 bar

POUT 3 3 bar

DNPIPE mm 100

EXAMPLE OF ENTRY DATA



From "LIFT-KV DIAGRAM" (pag.13) read the opening valve degree at QMAX and at QMIN :

L%(QMAX) = 43%

L%(QMIN) = 27% The valve in the example operates within 27% to 43% opening degree.

Cavitation check. The "CAVITATION DIAGRAM" (pag.17) indicates us that the valve does not operate in cavitation conditions.

43%

27%

23% 55%

LIFT - KV DIAGRAM



A dedicated software permits to properly the automatic control valve in accordance to the assigned condi-tions. The appropriate analysis of the cavitation is made according to the obturator position. Before you order the valve, please send us valve’s operating conditions. We can accordingly make a flow analysis.

AUTOMATIC CONTROL VALVES SIZING SOFTWARE



PRODUCT IDENTIFICATION

The article number and the serial number are shown in the identification label attached on the valve body. Please send them to us in case of service request.

M X XXX .XX .X ….

ACCESSORIES

NOMINAL PRESSURE IDENTIFICATION CODE

NOMINAL DIAMETER IDENTIFICATION CODE

FUNCTION

100 PRESSURE REDUCING VALVE

120 PRESSURE REDUCING/SUSTAINING CONTROL VALVE

200 PRESSURE SUSTAINING/RELIEF CONTROL VALVE

400 FLOW RATE CONTROL

500 FLOAT CONTROLLED MODULATING CONSTANT LEVEL VALVE

600 ON-OFF FLOAT CONTROLLED VALVE

700 SOLENOID CONTROL ON/OFF VALVE

800 ON/OFF ALTITUDE VALVES

900 EXCESS FLOW VALVE

TYPE

2 M2000 (FULL PORT)

3 M3000 (REDUCED PORT)

DIAPHRAGM ACTUATED AUTOMATIC CONTROL VALVE

Article number

Serial number



TEST FACILITIES

T.I.S Nuoval hydraulic laboratory is divided into two different areas:

the first area (see above) is used for measurements of the valves characteristics (pressure drop,...) or to veri-

fy the valve functionality under extreme conditions (fatigue tests,...);

the second area (see below) is for education and training (customers, end-users, our staff,...). In the develop-

ment of the control valves, the results of laboratory tests integrate 3D modelling, structural analysis and fluid

dynamics finite element analysis. This makes possible a continuous improvement of our products.



MAIN FUNCTIONS

RATE OF FLOW CONTROL VALVE

PRESSURE REDUCING VALVE

MAIN VALVE

PRESSURE SUSTAINING / RELIEF VALVE

PRESSURE REDUCING / SUSTAINING

RATE OF FLOW CONTROL / PRESSURE REDUCING VALVE

SURGE ANTICIPATOR / PRESSURE RELIEF VALVE

M3100

M3400

M3410

M3120

M3200

M3219



ALTITUDE VALVE ONE-WAY FLOW

MODULATING FLOAT CONTROLLED CONSTANT LEVEL VALVE

MAIN VALVE

ON-OFF FLOAT CONTROLLED VALVE

MODULATING FLOAT CONTROLLED CONSTANT LEVEL VALVE WITH PRESSURE SUSTAIN

MODULATING ALTITUDE VALVE

ON-OFF FLOAT CONTROLLED VALVE WITH PRESSURE SUSTAIN / RELIEF

M3500

M3800

M3805

M3520

M3600

M3620

ON-OFF FLOAT CONTROLLED VALVE WITH RATE OF FLOW CONTROL FUNCTION

M3640



SOLENOID CONTROLLED ON-OFF VALVE

PRESSURE REDUCING VALVE WITH SOLENOID CONTROL

MAIN VALVE

SOLENOID CONTROLLED / ELECTRICALLY OPERATED “STEP BY STEP”

EXCESS FLOW VALVE

M3170

M3701 [DN50 to DN250]

M3700 [DN300 to DN1000]

M3900

M3771 [DN50 to DN250]

M3770 [DN300 to DN1000]



V-PORT Main valve configuration

ACCESSORIES

V-PORT

When the automatic control valve is mainly used in the distribution networks with high flow rate variations,

see day or night, and concomitantly of facilities dedicated to the seasonal tourism that require large flow rates

when the presence is maximum and the minimum when the facilities are firm, it can be equipped with V-

PORT device. This solution replaces the use of external by-pass around the reducer.



DOUBLE SLOTTED CYLINDER Main valve configuration

DOUBLE SLOTTED CYLINDER

In the presence of high loads to be dissipated and in situations where the main valve with standard parabolic

obturator is subjected to cavitation, it is possible to equip the valve itself, in its interior, with a double stain-

less steel slotted cylinder where, through the specially designed slots, the flow is divided into radial flow

jets, colliding with each other at the center of the valve, thus allowing to dissipate this energy. This accessory

allows to obtain a curve of dissipation of energy which is adjusted to the actual working conditions of the val-

ve, according to the actual needs of plant.This accessory allows to achieve an energy dissipation curve which

is adjusted to the real working conditions of the valve, according to the plant’s effective requirements.



INSTALLATION EXAMPLE

Here below an example of installation for control valves. This kind of layout will ensure long life and correct

operation of the valve, reducing the probability of damages or malfunction.

2 3 1 5 6 1

1 ISOLATING GATE VALVE;

2 “Y” STRAINER;

3 REGULATING VALVE (AUTOMATIC CONTROL VALVE);

4 DISMANTLING JOINT;

5 RELIEF VALVE;

6 AIR RELEASE VALVE (3 FUNCTIONS).

4 1



MAIN APPLICATIONS

PRESSURE REDUCING CONTROL VALVE reduce a higher inlet pressure to a constant, lower, outlet pres-

sure independently of the flow rate or inlet pressure fluctuations. This kind of valve is mainly used to reduce

elevated pressures in distribution network.

Critical user

PRESSURE RELIEF / SUSTAINING CONTROL VALVE maintain a constant upstream pressure (valve inlet)

by relieving excess pressure.

SUSTAINING APPLICATION - The valve is installed in the distribution line between two pressure zones. If

demand on the lower zone cause a drop in upper zone pressure, pressure is sustained to minimum pre-set.

When this occurs the pressure available to the downstream zone will be reduced.

RELIEF APPLICATION - The valve is installed to relieve excess pressure from the source. Typically, the

valve diverts excess flow/pressure to atmosphere, storage tank, or back to pump suction.



SURGE ANTICIPATOR / PRESSURE RELIEF VALVE is designed to protect pumping stations against ex-

cess pressure. Senses low pressure condition that precedes high pressure. Relieves high pressure build-up

and protects system from over-pressure condition.

The valve shall open on a low or high pressure wave. The valve is normally mounted in a by-pass of the main

pipe line to discharge the over flow to the atmosphere or into the suction tank.



Q.disp. (average) MAX.25 l/s

Q.(required) 5 l/s

Q.(required) 10 l/s

Q.(required) 10 l/s

RATE OF FLOW CONTROL VALVE shall maintain a constant flow rate regardless of fluctuations in up-

stream and downstream pressure. Valve is fitted with two pressure gauge holder, to permit, with a differential

monometer, the measure of flow rate also without a flow meter on the pipe.

EXCESS FLOW VALVES are utilized on hydroelectric and irrigation plants and waterworks.

The valve is also equipped with a 3 ways excess flow control pilot that limit the damages caused by water

excess velocity either in pipelines following a pipe fracture due to crumbling movements or earthquakes or

pipes failure due to over pressure.



OUT-OF-TANK INSTALLATION.

IN-TANK INSTALLATION. (Float placed in a calm zone)

FLOAT CONTROLLED VALVE is frequently used to control the water level in reservoir, tank. Water level could be controlled by the float pilot or, when the water level rich the min/max level re-quested, the float pilot, switch on/off the main valve.



DRAIN

TO DISTRIBUTION

TANK

SENSING LINE

WATER SUPPLY

DRAIN

TO DISTRIBUTION

TANK

SENSING LINE

WATER SUPPLY

THE ALTITUDE VALVE shall control the filling of a reservoir to an adjustable water level. Altitude pilot is con-nected by a properly pipe (sensing line) with the reservoir and it is located on the main valve at the bottom of the tank. This valve is used instead of float controlled valve, where is requested a not intrusive control pilot. Valves normally used in gravity supplied reservoir.



NOTES



T.I.S. Service S.P.A. Via Lago d'Iseo 4,6

24060 BOLGARE (BG) - ITALY

Tel. +39 035 8354811 Fax. +39 035 8354888 E-mail: [email protected]

automatic control valves m3000 / m2000eng] st. m 01 sta - m2000_m3000- [r9... · we reserve the...

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