mth pumps c41 • c1 • c1 series

MTH PUMPS

C41 • C51 • C61 Series

C S

ERIE

S PU

MPS

Page C-1

© Copyright 2020 MTH Tool Company, Inc. Dated January 2020

• Capacities to 100 GPM • Heads to 140 Feet • Horizontal Close Coupled

MTH PUMPS

C Series Close Coupled Centrifugal Pumps

Discharge Pressure 200 PSISuction Pressure* (Max) 145 PSISuction Pressure (Min.) 26” Hg Vac.Speed** (Max.) 5500 RPMTemperatureStandard Construction -20° FCeramic Seal Seat - Water +230° FGraph. Imp. Silicon Carbide Seal Seat & Seal Flush

+250° F

HorsepowerD3 Motors - 3Ø 3 HPD3 Motors - 1Ø 2 HP* Consult factory for pressures over 145 psi** With variable frequency drive @ 90Hz

PART MATERIAL

Motor Bracket Stainless Steel

Casing Stainless Steel

Impeller Stainless Steel

Motor Shaft Stainless Steel

“O” Rings Viton

Seals Carbon/Viton

Seats Ceramic/Viton

STANDARD MATERIALS LIMITATIONSC

SERIES PU

MPS

Engineering SpecificationsHorizontal Close CoupledThe contractor shall furnish (and in-stall as shown on the plans) an MTH (C41) (C51) (C61) Series horizontal close-coupled centrifugal type pump size_________ Stainless Steel con-struction. Each pump shall have a capacity of ____GPM when operating at a total head of _______feet. Suc-tion pressure will be ____feet with a liquid temperature of ____°F.

The pump is to be furnished with 5/8” Type 2106 mechanical seal with stainless steel metal parts, (Buna) (Viton) elastomers, (ceramic seat and carbon primary ring) (Graphite load-

C41 • C51 • C61 close-coupled centrifugal pumps from MTH provide economical performance for 5 to 100 GPM applications requiring heads to 140 feet. By combining the latest concepts in pump design with precision manufacturing, the C Series pumps deliver excellent efficiency and low NPSH requirements. Efficient manufac-turing processes and highly optimized mechanical designs control costs. Main-tenance costs are kept to a minimum by combining a highly serviceable design with quality components to provide a long service life.

Impeller DesignC Series semi-open impellers allow the pump to pass small solids and fibrous material while close running tolerances maintain efficiency and performance. Impellers are pre-trimmed to be non-overloading to the pump and motor size indicated.

NPSH RequirementsC Series centrifugal pumps meet low net positive suction head requirements (NPSHR) without sacrificing efficiency. This is achieved by low fluid inlet veloc-ity and gentle acceleration to peripheral velocities.

Mechanical Seal BoxThe large seal chamber provides a wide fluid passage area for maximum cooling of the seal faces and allows debris and gases to be flushed away.

Axial Balance SystemThe C Series pumps utilize a thrust balancing system which combines the advantages of both static and dynamic balancing techniques to reduce axial thrust and provide longer bearing life.

D3 Motors

Similar to the T31 Series, the C Series takes advantage of our custom manufactured dual face D3 motors that incorporate a 304 stainless steel shaft and heavy-duty bearing. The stainless steel shaft eliminates the necessity of a shaft sleeve, thereby reducing the parts

count and simplifying maintenance and servicing procedures. All D3 motors also feature a two-pole 50/60Hz rating, as well as CE Mark approval useful for OEM’s with worldwide customers. The three-phase versions of the D3 motors feature a compact TEFC enclosure and a range from 1/3 to 3HP. The single phase D3 motors have an ODP enclosure and a range from 1/3 to 2HP.

Construction MaterialsC Series pumps are also available in all bronze construction. Seal elastomer and “O” ring gaskets of Buna, EPR, and Viton are available. Carbon vs. Ceramic seal/seat materi-als are standard with graphite loaded silicon carbide seal/seat as an option.

Optional FeaturesInlet StrainerA 90° suction strainer with a replace-able screen is available for installa-tion in the suction line to help prevent foreign materials from entering the pump. A cap at the bottom of the strainer can be easily and quick-ly removed for screen cleaning or replacement.

ed silicon carbide seat and primary ring). A 304 stainless steel shaft shall be furnished in all pumps.

The pump casing shall be vertically split, end suction. (Top Discharge) (90° Discharge) (180° Discharge) (270° Discharge) The impeller shall use dynamic thrust balancing.

The pump shall be close-coupled to an 80mm “C” face ___HP ___phase ___Hertz ___Volt ___RPM horizontal (Open Drip-Proof) (Totally Enclosed) motor with a CE Mark and UL rating.

Adjustable CasingC Series pump casings are axially adjustable allowing the use of custom impellers for OEM applications and to allow restoration of performance by closing up the internal clearances that develop over the course of a unit’s extended service life.

Page C-2


!WARNING:CANCER AND REPRODUCTIVE HARMWWW.P65WARNINGS.CA.GOV

Composite CurveC41 • C51 • C61 SERIES

2880 RPM

3450 RPM

C41

SER

IES

PUM

PS

Page C-3


U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80 90 100 110

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

C41AB1/3HP

C41AB1/2HP

C41BC1/3HP

C41BC1/2HP

C41CD1/3HP

C41CD1/2HP

C41CD3/4HP

C41DE1/2HP

C41EF1HP

C41EF1 1/2HP

U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80 90 100 110

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

C41DE1/2HP

C41AB1/3HP

C41BC1/3HP C41CD

1/3HP

C41AB1/2HP

C41CD1/2HP

C41BC1/2HP

C41EF1 1/2HP

C41CD3/4HP

C41EF1HP

C41 SERIES (60 Hz TEFC Service Factor Motor Horsepower Selections)


C41 • C51 • C61 SERIES

Performance Curves

3450 RPM

2880 RPM

C41 SER

IES PUM

PS

*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specific gravity fluids only.

Page C-4


U.S. GALLONS PER MINUTE0 10 15 20 25 30

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

5

NP

SH

R IN

FE

ET

0

2

4

6

8

10

NPSHR

BHP**

BH

P

0

0.1

0.2

0.3

0.4

0.5

BEP

C41AB - 1/3 HP* (1/2 X 3/4 X 4)

C41AB - 1/3 HP* (1/2 X 3/4 X 4)


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

5

NP

SH

R IN

FE

ET

0

2

4

6

NPSHR

BHP**

BEPB

HP

0.1

0.2

0.3

0.4

0

3 Phase 1/3 HP trim pump is furnished with a 1/2 HP 3/60/208-230/460V TEFC Motor.

Performance CurvesC41 • C51 • C61 SERIES

2880 RPM

3450 RPM

C41

SER

IES

PUM

PS


Page C-5


Head-Capacity

U.S. GALLONS PER MINUTE0 10 15 20 25 30 35 40

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

5

NP

SH

R IN

FE

ET

0

2

4

6

8

NPSHR

BH

P

0.2

0.3

0.4

0.5

0.6

BHP**

BEP

C41AB - 1/2 HP* (1/2 X 3/4 X 4)

C41AB - 1/2 HP* (1/2 X 3/4 X 4)

Head-Capacity


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

5

NP

SH

R IN

FE

ET

0

2

4

6

8

10

NPSHR

BHP**

BH

P

0.2

0.3

0.4

0.5

0.6

0.7

0.8

BEP


Performance Curves

3450 RPM

2880 RPM

C41 SER

IES PUM

PS


Page C-6


C41BC - 1/3 HP* (3/4 X 1 X 4)

C41BC - 1/3 HP* (3/4 X 1 X 4)

Head-Capacity


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

5

NPSHR

BHP**

BH

P

0

0.1

0.2

0.3

0.4

0.5

0.6

BEP

NP

SH

R IN

FE

ET

0

2

4

6

8

Head-Capacity

U.S. GALLONS PER MINUTE 0 10 15 20 25 30 35 40

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

5

NP

SH

R IN

FE

ET

0

2

4

6

NPSHR BHP**

BEP

BH

P

0

0.1

0.2

0.3

0.4



2880 RPM

3450 RPM

C41

SER

IES

PUM

PS


Page C-7



HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70Head-Capacity

NP

SH

R IN

FE

ET

0

2

4

6

8

NPSHR

BHP**

BH

P

0.3

0.4

0.5

0.6

0.7

0.8BEP


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

Head-Capacity

NP

SH

R IN

FE

ET

NPSHR

0

2

4

6

BH

P

0.2

0.3

0.4

0.5BEP

BHP**

C41BC - 1/2 HP* (3/4 X 1 X 4)

C41BC - 1/2 HP* (3/4 X 1 X 4)


Performance Curves

3450 RPM

2880 RPM

C41 SER

IES PUM

PS


Page C-8



HE

AD

IN F

EE

T

0

10

20

30

40

50

60Head-Capacity

NP

SH

R IN

FE

ET

0

2

4

6

8

10

NPSHR

BH

P

0.1

0.2

0.3

0.4

0.5

0.6

BEP

BHP**

C41CD - 1/3 HP* (1 X 1 1/4 X 4)

C41CD - 1/3 HP* (1 X 1 1/4 X 4)


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

NP

SH

R IN

FE

ET

0

2

4

6

NPSHR

BEP

BHP**

BH

P

0.1

0.2

0.3

0.4

0.5



2880 RPM

3450 RPM

C41

SER

IES

PUM

PS


Page C-9


U.S. GALLONS PER MINUTE0 10 20 30 40 50 60

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

NP

SH

R IN

FE

ET

0

2

4

6

8

10

NPSHR

BEP

BHP**

BH

P

0.3

0.4

0.5

0.6

0.7

0.8


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

NP

SH

R IN

FE

ET

0

2

4

6

8

NPSHR

BEP

BHP**

BH

P

0.2

0.3

0.4

0.5

0.6

C41CD - 1/2 HP* (1 X 1 1/4 X 4)

C41CD - 1/2 HP* (1 X 1 1/4 X 4)


Performance Curves

3450 RPM

2880 RPM

C41 SER

IES PUM

PS


Page C-10


Head-Capacity

U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

NP

SH

R IN

FE

ET

0

2

4

6

8

NPSHR

BH

P

0

0.2

0.4

0.6

0.8

BEP

BHP**

Head-Capacity


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

NPSHR

NP

SH

R IN

FE

ET

0

2

4

6

8

BH

P

0

0.2

0.4

0.6

0.8

1.0BEP

BHP**

C41CD - 3/4 HP* (1 X 1 1/4 X 4)

C41CD - 3/4 HP* (1 X 1 1/4 X 4)

DOE Compliance: IMP DIA = 4.00” PEIcl = 0.96


2880 RPM

3450 RPM

C41

SER

IES

PUM

PS


Page C-11



HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

NP

SH

R IN

FE

ET

0

2

4

6

8

NPSHR

BEP

BHP*

BH

P

0.2

0.3

0.4

0.5

0.6


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

NPSHR

NP

SH

R IN

FE

ET

0

2

4

6

8

10

BEP

BHP**

BH

P

0.3

0.4

0.5

0.6

0.7

0.8

C41DE - 1/2 HP* (1 1/4 X 1 1/2 X 4)

C41DE - 1/2 HP* (1 1/4 X 1 1/2 X 4)


Performance Curves

3450 RPM

2880 RPM

C41 SER

IES PUM

PS


Page C-12


Head-Capacity

U.S. GALLONS PER MINUTE 0 10 20 30 40 50 60 70 80 90 100 110 120

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

NPSHR

NP

SH

R IN

FE

ET

0

2

4

6 BEP

BHP**

BH

P

0.2

0.4

0.6

0.8

Head-Capacity


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

NPSHR

NP

SH

R IN

FE

ET

0

2

4

6 BEP

BHP**

BH

P

0.4

0.6

0.8

1.0

1.2

1.4

C41EF - 1 HP* (1 1/2 X 2 X 4)

C41EF - 1 HP* (1 1/2 X 2 X 4)



2880 RPM

3450 RPM

C41

SER

IES

PUM

PS


Page C-13



HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

NPSHR

NP

SH

R IN

FE

ET

0

2

4

6 BEP

BHP**

BH

P

0.2

0.4

0.6

0.8

1.0


HE

AD

IN F

EE

T

0

10

20

30

40

50

60

Head-Capacity

NPSHR

NP

SH

R IN

FE

ET

0

2

4

6

BEP

BHP**

BH

P

0.6

0.8

1.0

1.2

1.4

1.6

C41EF - 1 1/2 HP* (1 1/2 X 2 X 4)

C41EF - 1 1/2 HP* (1 1/2 X 2 X 4)



C41 Dimensions

C41 SER

IES PUM

PS

Page C-14


NOTES: All dimensions in inches. May vary ± ¼ inches. Not for construction purposes unless certified. *See motor dimension (Section Motors) for “C-AH” dimension (Varies depending on motor enclosure).

NPT Discharge

NPT Suction

Y

BA

DD

A

E

X

DHØ

Z

F E

ABC-AH* DF

3 Phase TEFC Motors

Pump Size71 Frame

(1/3 HP - 1 HP)80 Frame

(1 1/2 HP - 2HP)Model Disch. Suction Imp. Ø DD DF X Y Z A AB D E F BA A AB D E F BAC41AB 1/2 3/4 4 3 1/4 4 3/16 2 9/16 1 3/16 2 5/16 5 1/4 5 2 13/16 2 3/16 3 9/16 6 3/16 --- --- --- --- --- ---C41BC 3/4 1 4 3 1/4 4 3/8 2 5/8 1 5/16 2 7/16 5 1/4 5 2 13/16 2 3/16 3 9/16 6 3/8 --- --- --- --- --- ---C41CD 1 1 1/4 4 3 1/4 4 9/16 2 3/4 1 1/2 2 9/16 5 1/4 5 2 13/16 2 3/16 3 9/16 6 9/16 --- --- --- --- --- ---C41DE 1 1/4 1 1/2 4 3 7/16 4 13/16 2 15/16 1 3/4 2 11/16 5 1/4 5 2 13/16 2 3/16 3 9/16 6 13/16 --- --- --- --- --- ---C41EF 1 1/2 2 4 3 5/16 5 3/16 2 15/16 2 1/16 2 13/16 5 1/4 5 2 13/16 2 3/16 3 9/16 7 3/16 6 1/8 5 1/8 3 1/8 2 7/16 3 15/16 7 3/8

E Optional180° Position

Optional90° Position


NPT Discharge

NPT Suction

Y

BA

DD

A

X

DHØ

Z

2 3/4E

C-AH* DF

Single Phase ODP Motors

Pump Size48 Frame

(1/3 - 1 HP)56 Frame

(1 1/2 - 2HP)Model Disch. Suction Imp. Ø DD DF X Y Z A D E H BA A D E H BAC41AB 1/2 3/4 4 3 1/4 4 3/16 2 9/16 1 3/16 2 5/16 6 1/8 3 2 1/8 5/16-18 7 3/16 --- --- --- --- ---C41BC 3/4 1 4 3 1/4 4 3/8 2 5/8 1 5/16 2 7/16 6 1/8 3 2 1/8 5/16-18 7 3/4 --- --- --- --- ---C41CD 1 1 1/4 4 3 1/4 4 9/16 2 3/4 1 1/2 2 9/16 6 1/8 3 2 1/8 5/16-18 7 9/16 --- --- --- --- ---C41DE 1 1/4 1 1/2 4 3 7/16 4 13/16 2 15/16 1 3/4 2 11/16 6 1/8 3 2 1/8 5/16-18 7 13/16 --- --- --- --- ---C41EF 1 1/2 2 4 3 5/16 5 3/16 2 15/16 2 1/16 2 13/16 6 1/8 3 2 1/8 5/16-18 8 3/16 6 9/16 3 1/2 2 7/16 5/16-18 8 3/16






2880 RPM

3450 RPM

C51

SER

IES

PUM

PS

Page C-15





HE

AD

IN F

EE

T

0

20

40

60

80

100

120

C51AB1/2HP

C51AB3/4HP

C51AB1 HP

C51BC1HP

C51BC1 1/2HP

C51CD1 1/2HP

C51CD2HP


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

C51AB1/2HP

C51AB3/4HP

C51AB1HP

C51BC1HP

C51BC1 1/2HP

C51CD1 1/2HP

C51CD2HP


Performance Curves

3450 RPM

2880 RPM


C51 SER

IES PUM

PS

Page C-16


U.S. GALLONS PER MINUTE0 10 15 20

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

80

0.0

0.5

1.0

1.5

Head-Capacity

5

BHP

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

NP

SH

R IN

FE

ET

NPSHR

BHP**

BEP

U.S. GALLONS PER MINUTE0 10 15 20

HE

AD

IN F

EE

T

0

10

20

30

40

50

60

70

80

Head-Capacity

5

BHP

0.2

0.3

0.4

0.5

0.6

0.0

0.5

1.0

1.5

2.0

NP

SH

R IN

FE

ET

NPSHR

BHP**

BEP

C51AB - 1/2 HP* (1/2 X 3/4 X 5)

C51AB - 1/2 HP* (1/2 X 3/4 X 5)


2880 RPM

3450 RPM


C51

SER

IES

PUM

PS

Page C-17


U.S. GALLONS PER MINUTE0 10 15 20 25

HE

AD

IN F

EE

T

0

20

40

60

80

100

0

1

2

3

Head-Capacity

5

BHP

0.2

0.4

0.6

0.8

1.0

NP

SH

R IN

FE

ET

NPSHR

BHP**

BEP

U.S. GALLON PER MINUTE0 10 15 20 25

HE

AD

IN F

EE

T

0

20

40

60

80

100

Head-Capacity

NPSHR

5

BH

P

0.2

0.4

0.6

0.8

0

1

2

3

NP

SH

R IN

FE

ET

BHP**

BEP

C51AB - 3/4 HP* (1/2 X 3/4 X 5)

C51AB - 3/4 HP* (1/2 X 3/4 X 5)


Performance Curves

3450 RPM

2880 RPM


C51 SER

IES PUM

PS

Page C-18



HE

AD

IN F

EE

T

0

20

40

60

80

100

Head-Capacity

5

BH

P

0.4

0.6

0.8

1.0

1.2

BHP**

BEP

NPSHR

0

1

2

3

4

NP

SH

R IN

FE

ET


HE

AD

IN F

EE

T

0

20

40

60

80

100

Head-Capacity

NPSHR

0

1

2

3

4

NP

SH

R IN

FE

ET

5

BH

P

0.4

0.6

0.8

1.0

1.2

BHP**

BEP

C51AB - 1 HP* (1/2 X 3/4 X 5)

C51AB - 1 HP* (1/2 X 3/4 X 5)


2880 RPM

3450 RPM



C51

SER

IES

PUM

PS

Page C-19



HE

AD

IN F

EE

T

0

20

40

60

80

100

Head-Capacity

0

2

4

6

NPSHR

NP

SH

R IN

FE

ET

BHP**

BEP

BH

P

0

0.25

0.5

0.75


HE

AD

IN F

EE

T

0

20

40

60

80

100

Head-Capacity

0

2

4

6

8

NPSHR

NP

SH

R IN

FE

ET

BHP**

BEP

BH

P

0.4

0.6

0.8

1.0

1.2

C51BC - 1 HP* (3/4 X 1 X 5)

C51BC - 1 HP* (3/4 X 1 X 5)


Performance Curves

3450 RPM

2880 RPM



C51 SER

IES PUM

PS

Page C-20


U.S. GALLONS PER MINUTE

HE

AD

IN F

EE

T

Head-Capacity

0

2

4

6

8

NPSHR NP

SH

R IN

FE

ET

0 10 20 30 40 50 600

20

40

60

80

100

BH

P

0

0.25

0.5

0.75

1.0

BHP**

BEP


HE

AD

IN F

EE

T

0

20

40

60

80

100

0

2

4

6

8

Head-Capacity

BH

P

1.0

1.2

1.4

1.6

1.8

BHP**

BEP

NPSHR

NP

SH

R IN

FE

ET

C51BC - 1 1/2 HP* (3/4 X 1 X 5)

C51BC - 1 1/2 HP* (3/4 X 1 X 5)


2880 RPM

3450 RPM



C51

SER

IES

PUM

PS

Page C-21


BH

P

0.4

0.6

0.8

1.0

Head-Capacity


HE

AD

IN F

EE

T

0

20

40

60

80

100

0

2

4

6

NP

SH

R IN

FE

ET

NPSHR

BHP**

BEP

Head-Capacity


HE

AD

IN F

EE

T

0

20

40

60

80

100

0

2

4

6

8

NP

SH

R IN

FE

ET

NPSHR

BHP**

BEP

BH

P

1.0

1.2

1.4

1.6

1.8

C51CD - 1 1/2 HP* (1 X 1 1/4 X 5)

C51CD - 1 1/2 HP* (1 X 1 1/4 X 5)


Performance Curves

3450 RPM

2880 RPM



C51 SER

IES PUM

PS

Page C-22


Head-Capacity


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

0

2

4

6

8

10

NP

SH

R IN

FE

ET

NPSHR

BHP**

BEP

BH

P

1.2

1.4

1.6

1.8

2.0

2.2

Head-Capacity


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

0

2

4

6

8

NP

SH

R IN

FE

ET

NPSHR

BHP**

BEP

BH

P

0.6

0.8

1.0

1.2

1.4

C51CD - 2 HP* (1 X 1 1/4 X 5)

C51CD - 2 HP* (1 X 1 1/4 X 5)


C51 Dimensions

C51

SER

IES

PUM

PS

Page C-23


NOTES: All dimensions in inches. May vary ± ¼ inches. Not for construction purposes unless certified.

D1

08

-4

01

4-

1-

20

6




NPT Discharge

NPTSuction

Y

BA

DD

AE

X

D

HØ

Z

FE

ABC-AH DF

D1

08

-4

01

4-

1-

20 6

E

NPT Discharge

NPT Suction

Y

BA

DD

A

X

D

HØ

Z

2 3/4 E

C-AH

3 Phase TEFC Motors

Pump Size71 Frame

(1/3 HP - 1 HP)80 Frame

(1 1/2 HP - 2 HP)Model Disch. Suction Imp. Ø DD DF X Y Z A AB D E F BA A AB D E F BAC51AB 1/2 3/4 5 3 1/2 4 3/8 3 1/16 1 5/16 2 3/4 5 5 2 13/16 2 3/16 3 9/16 6 7/16 --- --- --- --- --- ---C51BC 3/4 1 5 3 1/2 4 7/16 3 1/16 1 5/16 2 13/16 5 5 2 13/16 2 3/16 3 9/16 6 7/16 5 1/8 5 1/8 3 1/8 2 7/16 3 15/16 6 9/16C51CD 1 1 1/4 5 3 5/8 4 9/16 3 3/16 1 1/2 3 5 5 2 13/16 2 3/16 3 9/16 6 9/16 5 1/8 5 1/8 3 1/8 2 7/16 3 15/16 6 3/4C51DE 1 1/4 1 1/2 5 3 11/16 4 15/16 3 3/4 1 7/8 3 1/16 --- --- --- --- --- --- 5 1/8 5 1/8 3 1/8 2 7/16 3 15/16 7 1/8




DF

Single Phase ODP Motors

Pump Size48 Frame

(1/3 - 1 HP)56 Frame

(1 1/2 - 2 HP)Model Disch. Suction Imp. Ø DD DF X Y Z A D E H BA D AGC51AB 1/2 3/4 5 3 1/2 4 3/8 3 1/16 1 5/16 2 3/4 6 1/8 3 2 1/8 5/16-18 7 3/16 --- ---C51BC 3/4 1 5 3 1/2 4 7/16 3 1/16 1 5/16 2 13/16 6 1/8 3 2 1/8 5/16-18 7 3/4 --- ---C51CD 1 1 1/4 5 3 5/8 4 9/16 3 3/16 1 1/2 3 6 1/8 3 2 1/8 5/16-18 7 9/16 3 1/2 10 15/16C51DE 1 1/4 1 1/2 5 3 11/16 4 15/16 3 3/4 1 7/8 3 1/16 6 1/8 3 2 1/8 5/16-18 7 13/16 3 1/2 10 15/16



2880 RPM

3450 RPM

C61

SER

IES

PUM

PS

Page C-25



HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

C61AB1 1/2HP

C61BC2HP

C61BC3HP

C61CD3HP




HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

C61AB1 1/2HP

C61BC2HP

C61BC3HP

C61CD3HP


Performance Curves

3450 RPM

2880 RPM


C61 SER

IES PUM

PS

Page C-26


BHP**

BEP


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

Head-Capacity

0

2

4

6

8

10

12

14

NPSHR

NP

SH

R IN

FE

ET

5

BHP

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

0

2

4

6

Head-Capacity

NPSHR

NP

SH

R IN

FE

ET

5

BHP**

BEP

BHP

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

C61AB - 1 1/2 HP* (1/2 X 3/4 X 6)

C61AB - 1 1/2 HP* (1/2 X 3/4 X 6)


2880 RPM

3450 RPM


C61

SER

IES

PUM

PS

Page C-27



HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

Head-Capacity

0

2

4

6

8

10

12

NPSHR

NP

SH

R IN

FE

ET

BHP**

BEP

BHP

0

0.4

0.8

1.2

1.6

2.0

2.4


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

Head-Capacity

0

2

4

6

8

10

12

14

NPSHR

NP

SH

R IN

FE

ET

BHP**

BEP

BHP

0

0.4

0.8

1.2

1.6

2.0

2.4

2.8

C61BC - 2 HP* (3/4 X 1 X 6)

C61BC - 2 HP* (3/4 X 1 X 6)



Performance Curves

3450 RPM

2880 RPM


C61 SER

IES PUM

PS

Page C-28


Head-Capacity

0 20 30 40 50 60 70 800

20

40

60

80

100

120

140

160

10

NPSHRBHP**

BEP

HE

AD

IN F

EE

T

U.S. GALLONS PER MINUTE

NP

SH

R IN

FE

ET

0

2

4

6

8

10

12

BH

P

0.4

0.8

1.2

1.6

2.0

2.4

2.8

Head-Capacity


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

NP

SH

R IN

FE

ET

0

5

10

15

20

25

30

35

NPSHR

BHP**

BEP

BHP

0.4

0.8

1.2

1.6

2.0

2.4

2.8

3.2

C61BC - 3 HP* (3/4 X 1 X 6)

C61BC - 3 HP* (3/4 X 1 X 6)



2880 RPM

3450 RPM


C61

SER

IES

PUM

PS

Page C-29



HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

Head-Capacity

NP

SH

R IN

FE

ET

0

4

8

12

16

20

24

NPSHR

BHP

0

.5

1

1.5

2.0

2.5

3

BHP**

BEP

Head-Capacity


HE

AD

IN F

EE

T

0

20

40

60

80

100

120

140

160

NP

SH

R IN

FE

ET

3

6

9

12

15

18

21

NPSHR

0

BHP

0

.5

1

1.5

2

2.5

3

3.5

BHP**

BEP

C61CD - 3 HP* (1 X 1 1/4 X 6)

C61CD - 3 HP* (1 X 1 1/4 X 6)



C61 DimensionsC61 SER

IES PUM

PS

Page C-30


6 1/8 6 1/8

NOTES: All dimensions in inches. May vary ± ¼ inches. Not for construction purposes unless certified.




9.44*

*Conduit Box location and dimension only applies to 3HP Motors. All other three phase motors have a side mounted conduit box.

NPT Discharge

NPT Suction

Y

BA

DD

AE

X

D

Z

F E

ABAG DF

NPTDischarge

NPTSuction

Y

BA

DD

2 1/8

X

3

Z

2 3/4

AG DF

Pump Size Single Phase ODP MotorsModel Disch. Suction Imp. Ø DD DF X Y Z

56 Frame (1 1/2 - 2 HP)

BA AGC61AB 1/2 3/4 6 3 15/16 4 5/8 3 7/16 1 1/2 3 5/16 7 3/16 14 1/8C61BC 3/4 1 6 3 15/16 4 7/16 3 15/16 1 5/16 3 1/4 7 3/4 13 5/8

Pump Size 3 Phase TEFC MotorsModel Disch. Suction Imp. Ø DD DF X Y Z Frame A AB D E F BA AGC61AB 1/2 3/4 6 3 15/16 4 5/8 3 7/16 1 1/2 3 5/16 80

(1 1/2HP - 2HP)6 1/8 5 1/8 3 1/8 2 1/2 3 15/16 6 13/16 9 7/16

C61BC 3/4 1 6 3 15/16 4 7/16 3 15/16 1 5/16 3 1/46 1/8 5 1/8 3 1/8 2 1/2 3 15/16 6 13/16 9 7/16

90 Frame(3HP)

6 11/16 5 7/8 3 9/16 2 3/4 4 15/16 7 3/4 11 5/16C61CD 1 1 1/4 6 4 1/16 5 3/16 4 5/8 2 1/8 3 3/16 6 11/16 5 7/8 3 9/16 2 3/4 4 15/16 7 3/4 11 5/16

All units in inches





mth pumps c41 • c1 • c1 series

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