39
MTH PUMPS C41 • C51 • C61 Series C SERIES PUMPS Page C-1 © Copyright 2011 MTH Tool Company, Inc. Dated May 2011 • Capacities to 100 GPM • Heads to 140 Feet • Horizontal Close Coupled
MTH PUMPS
C41 • C51 • C61 Series
C SE
RIES
PUM
PS
Page C-1
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
• 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 PUM
PS
Engineering Specifi cationsHorizontal 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 loaded
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 effi ciency and low NPSH requirements. Effi cient 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 fi brous material while close running tolerances maintain effi ciency 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 sacrifi cing effi ciency. This is achieved by low fl uid inlet veloc-ity and gentle acceleration to peripheral velocities.
Mechanical Seal BoxThe large seal chamber provides a wide fl uid passage area for maximum cooling of the seal faces and allows debris and gases to be fl ushed 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 quickly removed for screen cleaning or replacement.
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
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
Composite CurveC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
C41
SERI
ES P
UMPS
Page C-3
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
C41DE3/4HP
C41DE1HP
C41EF3/4HP
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
C41DE3/4HP
C41EF1 1/2HP
C41EF3/4HP
C41CD3/4HP
C41DE1HP
C41EF1HP
C41 SERIES (60 Hz TEFC Service Factor Motor Horsepower Selections)
C41 SERIES (50 Hz TEFC Service Factor Motor Horsepower Selections)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
C41 SERIES PUMPS
*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
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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)
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
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
SERI
ES P
UMPS
*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-5
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
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
10
NPSHR
BHP**
BH
P
0.2
0.3
0.4
0.5
0.6
0.7
0.8
BEP
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
C41 SERIES PUMPS
*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-6
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
C41BC - 1/3 HP* (3/4 X 1 X 4)
C41BC - 1/3 HP* (3/4 X 1 X 4)
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
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 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
NPSHRBHP**
BEP
BH
P
0
0.1
0.2
0.3
0.4
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
SERI
ES P
UMPS
*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-7
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50
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
U.S. GALLONS PER MINUTE0 10 20 30 40 50
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
C41 SERIES PUMPS
*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-8
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50
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)
U.S. GALLONS PER MINUTE0 10 20 30 40 50
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
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
SERI
ES P
UMPS
*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-9
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
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
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
C41 SERIES PUMPS
*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-10
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
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
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)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
C41
SERI
ES P
UMPS
*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-11
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
NPSHR
BEP
BHP*
BH
P
0.2
0.3
0.4
0.5
0.6
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
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
C41 SERIES PUMPS
*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-12
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
BEP
BHP**
BH
P
0
0.2
0.4
0.6
0.8
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
1.0
BEP
BHP**
C41DE - 3/4 HP* (1 1/4 X 1 1/2 X 4)
C41DE - 3/4 HP* (1 1/4 X 1 1/2 X 4)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
C41
SERI
ES P
UMPS
*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-13
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
C41DE - 1 HP* (1 1/4 X 1 1/2 X 4)
C41DE - 1 HP* (1 1/4 X 1 1/2 X 4)
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80 90 100
HE
AD
IN F
EE
T
0
10
20
30
40
50
60Head-Capacity
NPSHR
NP
SH
R IN
FE
ET
0
2
4
6
8
BH
P
0.4
0.6
0.8
1.0
1.2
1.4BEP
BHP**
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80 90 100
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
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
C41 SERIES PUMPS
*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-14
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
Head-Capacity
U.S. GALLONS PER MINUTE 0 10 20 30 40 50 60 70 80 90 100
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
0.2
0.4
0.6
0.8
Head-Capacity
U.S. GALLONS PER MINUTE 0 10 20 30 40 50 60 70 80 90 100
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
1.0
1.2
C41EF - 3/4 HP* (1 1/2 X 2 X 4)
C41EF - 3/4 HP* (1 1/2 X 2 X 4)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
C41
SERI
ES P
UMPS
*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-15
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
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
0.4
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
C41 SERIES PUMPS
*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-16
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
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
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
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 • C51 • C61 SERIES
C41 Dimensions
C41
SERI
ES P
UMPS
Page C-17
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
NOTES: All dimensions in inches. May vary ± ¼ inches. Notforconstructionpurposesunlesscertified. *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
Optional270° 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
Optional180° Position
Optional90° Position
Optional270° Position
Composite CurveC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
C41
SERI
ES P
UMPS
Page C-3
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
C41CD1/3HP
C41CD1/2HP
C41DE1/2HP
C41DE3/4HP
C41DE1HP
C41EF3/4HP
C41EF1HP
C41EF1 1/2HP
C41AB1/3HP
C41AB1/2HP
C41BC1/3HP
C41BC1/2HP
C41CD1/3HP
C41CD1/2HP
C41CD3/4HP
C41DE1/2HP
C41DE3/4HP
C41DE1HP
C41EF3/4HP
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
C41DE3/4HP
C41EF1 1/2HP
C41EF3/4HP
C41CD3/4HP
C41DE1HP
C41EF1HP
C41DE1/2HP
C41AB1/3HP
C41BC1/3HP C41CD
1/3HP
C41AB1/2HP
C41CD1/2HP
C41BC1/2HP
C41DE3/4HP
C41EF1 1/2HP
C41EF3/4HP
C41CD3/4HP
C41DE1HP
C41EF1HP
C41 SERIES (60 Hz TEFC Service Factor Motor Horsepower Selections)
C41 SERIES (50 Hz TEFC Service Factor Motor Horsepower Selections)
Page XX
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
Notes
This Page is Intentionally Left Open
Composite CurveC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
C51
SERI
ES P
UMPS
Page C-18
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
C51 SERIES (60 Hz TEFC Service Factor Motor Horsepower Selections)
C51 SERIES (50 Hz TEFC Service Factor Motor Horsepower Selections)
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
C51AB1/2HP
C51AB3/4HP
C51AB1 HP
C51BC1HP
C51BC1 1/2HP
C51CD1 HP
C51CD1 1/2HP
C51CD2HP
C51DE2 HP
C51DE1 1/2HP
C51AB1/2HP
C51AB3/4HP
C51AB1 HP
C51BC1HP
C51BC1 1/2HP
C51CD1 HP
C51CD1 1/2HP
C51CD2HP
C51DE2 HP
C51DE1 1/2HP
C51AB1/2HP
C51AB3/4HP
C51AB1HP
C51BC1HP C51BC
1 1/2HP
C51CD1HP
C51CD1 1/2HP
C51CD2HP
C51DE2HPC51DE
1 1/2HP
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
C51AB1/2HP
C51AB3/4HP
C51AB1HP
C51BC1HP C51BC
1 1/2HP
C51CD1HP
C51CD1 1/2HP
C51CD2HP
C51DE2HPC51DE
1 1/2HP
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51 SERIES PUMPS
Page C-19
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51
SERI
ES P
UMPS
Page C-20
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51 SERIES PUMPS
Page C-21
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 15 20 25
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
U.S. GALLONS PER MINUTE0 10 15 20 25
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)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51
SERI
ES P
UMPS
Page C-22
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50
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**
BEPB
HP
0.4
0.6
0.8
1.0
U.S. GALLONS PER MINUTE0 10 20 30 40 50
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51 SERIES PUMPS
Page C-23
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
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
0.6
0.8
1.0
1.2
1.4
BHP**
BEP
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60
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)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51
SERI
ES P
UMPS
Page C-24
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60
HE
AD
IN F
EE
T
0
20
40
60
80
100
Head-Capacity
0
2
4
6
8
NPSHRN
PS
HR
IN F
EE
T
BHP**
BEP
BH
P
0.4
0.6
0.8
1.0
1.2
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60
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
C51CD - 1 HP* (1 X 1 1/4 X 5)
C51CD - 1 HP* (1 X 1 1/4 X 5)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51 SERIES PUMPS
Page C-25
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
BH
P
0.6
0.8
1.0
1.2
Head-Capacity
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
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
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
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 CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51
SERI
ES P
UMPS
Page C-26
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
Head-Capacity
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
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
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51 SERIES PUMPS
Page C-27
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
Head-Capacity
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
HE
AD
IN F
EE
T
0
20
40
60
80
100
0
4
8
12
NPSHR
NP
SH
R IN
FE
ET
BHP**
BEP
BH
P
0.6
0.8
1.0
1.2
Head-Capacity
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
HE
AD
IN F
EE
T
0
20
40
60
80
100
0
4
8
12
16
NPSHR NP
SH
R IN
FE
ET
BHP**
BEP
BH
P
1.0
1.2
1.4
1.6
1.8
C51DE - 1 1/2 HP* (1 1/4 X 1 1/2 X 5)
C51DE - 1 1/2 HP* (1 1/4 X 1 1/2 X 5)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C51
SERI
ES P
UMPS
Page C-28
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80 90 100
HE
AD
IN F
EE
T
0
20
40
60
80
100Head-Capacity
0
4
8
12
16
NPSHR NP
SH
R IN
FE
ET
BH
P
0.4
0.8
1.2
1.6
2.0
BHP**
BEP
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80 90 100
HE
AD
IN F
EE
T
0
20
40
60
80
100
Head-Capacity
0
4
8
12
NPSHR NP
SH
R IN
FE
ET
BHP**
BEPB
HP
0.4
0.8
1.2
1.6
C51DE - 2 HP* (1 1/4 X 1 1/2 X 5)
C51DE - 2 HP* (1 1/4 X 1 1/2 X 5)
C41 • C51 • C61 SERIES
C51 Dimensions
C51 SERIES PUMPS
Page C-29
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
NOTES: All dimensions in inches. May vary ± ¼ inches. Not for construction purposes unless certifi ed.
D1
08
-4
01
4-
1-
20
6
Optional180° Position
Optional90° Position
Optional270° Position
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
Optional180° Position
Optional90° Position
Optional270° Position
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
Composite CurveC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
C61
SERI
ES P
UMPS
Page C-30
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
140
160
C61AB1 1/2HP
C61BC1 1/2HP
C61BC2HP
C61BC3HP
C61CD3HP
C61AB1 1/2HP
C61BC1 1/2HP
C61BC2HP
C61BC3HP
C61CD3HP
C61 SERIES (60 Hz TEFC Service Factor Motor Horsepower Selections)
C61 SERIES (50 Hz TEFC Service Factor Motor Horsepower Selections)
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
140
160
C61AB1 1/2HP
C61BC1 1/2HP
C61BC2HP
C61BC3HP
C61CD3HP
C61AB1 1/2HP
C61BC1 1/2HP
C61BC2HP
C61BC3HP
C61CD3HP
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C61 SERIES PUMPS
Page C-31
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
BHP**
BEP
U.S. GALLONS PER MINUTE0 10 15 20 25
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
U.S. GALLONS PER MINUTE0 10 15 20 25
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)
Performance CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C61
SERI
ES P
UMPS
Page C-32
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
Head-Capacity
NP
SH
R IN
FE
ET
0
2
4
6
8
NPSHR
BH
P
0
0.4
0.8
1.2
1.6
BHP**BEP
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
Head-Capacity
NP
SH
R IN
FE
ET
0
2
4
6
8
10
NPSHR
BHP**
BEP
BH
P
0.0
0.4
0.8
1.2
1.6
2.0
C61BC - 1 1/2 HP* (3/4 X 1 X 6)
C61BC - 1 1/2 HP* (3/4 X 1 X 6)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C61 SERIES PUMPS
Page C-33
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60
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
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60
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 CurvesC41 • C51 • C61 SERIES
2880 RPM
3450 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C61
SERI
ES P
UMPS
Page C-34
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
Head-Capacity
0 20 30 40 50 60 70 800
20
40
60
80
100
120
140
160
10
NPSHR
BHP**
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
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70 80
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)
C41 • C51 • C61 SERIES
Performance Curves
3450 RPM
2880 RPM
*High Service Factor Motor Horsepower Selections - See Standard Motor Guide and/or Motor Price Sheets for more information.**BHP data valid for 1.0 specifi c gravity fl uids only.
C61 SERIES PUMPS
Page C-35
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
140
160
Head-Capacity
NP
SH
R IN
FE
ET
0
1
2
3
4
5
6
NPSHR
BHP
0.4
0.8
1.2
1.6
2.0
2.4
2.8
BHP**
BEP
Head-Capacity
U.S. GALLONS PER MINUTE0 10 20 30 40 50 60 70
HE
AD
IN F
EE
T
0
20
40
60
80
100
120
140
160
NP
SH
R IN
FE
ET
1
2
3
4
5
6
7
NPSHR
0
BHP
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
BHP**
BEP
C61CD - 3 HP* (1 X 1 1/4 X 6)
C61CD - 3 HP* (1 X 1 1/4 X 6)
C41 • C51 • C61 SERIES
C61 Dimensions
C61
SERI
ES P
UMPS
Page C-36
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
6 1/8 6 1/8
NOTES: All dimensions in inches. May vary ± ¼ inches. Not for construction purposes unless certifi ed.
Optional180° Position
Optional90° Position
Optional270° Position
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
Optional180° Position
Optional90° Position
Optional270° Position
Page XX
© Copyright 2011 MTH Tool Company, Inc. Dated May 2011
Notes
This Page is Intentionally Left Open
