FEATURES
Superior Design
●
Triplex plunger design gives smoother liquid flow.
●
Hi-Pressure Seals are completely lubricated and cooled by
the liquid being pumped.
●
Inlet and discharge valve assemblies interchange for easier
maintenance.
●
Lubricated Lo-Pressure Seals provides double protection against
external leakage.
●
Oil bath crankcase assures optimum lubrication.
●
Close tolerance concentricity of the ceramic plunger maximizes
seal life.
●
Optional Belt Drive or Motorized versions offer system flexibility.
Quality Materials
●
Precision design 316 stainless steel valves and seats are hardend
and polished for ultimate seating and extended valve life.
●
316 Stainless Steel or Nickel Aluminum Bronze manifolds are strong
and corrosion resistant.
●
Special concentric, high-density, polished, solid ceramic plungers
provide a true wear surface and extended seal life.
●
Specially formulated, CAT PUMP exclusive, Hi-Pressure Seals offer
unmatched performance and seal life.
●
Die cast aluminum crankcase provides high strength, minimum
weight and precision tolerance control.
●
Chrome-moly crankshaft gives unmatched strength and surface
hardness.
●
Oversized crankshaft bearings with greater capacity mean longer
bearing life.
Easy Maintenance
●
Wet-end is easily serviced without entering crankcase, requiring less
time and effort.
●
Preset packings mean no packing gland adjustment is necessary,
reducing maintenance costs.
SPECIFICATIONS
U.S. Measure
Metric Measure
MODELS
231
AND
237
Flow ................................................................2.3 GPM
(8.7 L/M)
Pressure Range ..................................100 to 1500 PSI
(7 to 105 BAR)
RPM .............................................................1725 RPM
(1725 RPM)
Stroke .................................................................0.276"
(7 mm)
MODELS
241
AND
247
Flow ................................................................3.6 GPM
(13.6 L/M)
Pressure Range ..................................100 to 1200 PSI
(7 to 85 BAR)
RPM .............................................................1725 RPM
(1725 RPM)
Stroke .................................................................0.433"
(11 mm)
MODELS
271
AND
277
Flow ................................................................3.5 GPM
(13.2 L/M)
Pressure Range ..................................100 to 1500 PSI
(7 to 105 BAR)
RPM .............................................................1450 RPM
(1450 RPM)
Stroke .................................................................0.500"
(12.7 mm)
COMMON SPECIFICATIONS
Bore ....................................................................0.709"
(18 mm)
Inlet Pressure Range .......................Flooded to 60 PSI
(Flooded to 4 BAR)
Crankcase Capacity ............................................15 oz.
(.45 L)
Maximum Liquid Temperature ............................160°F
(71°C)
Above 130°F call CAT PUMPS for inlet conditions and elastomer recommendations.
Inlet Ports (2)................................................1/2" NPTF
(1/2" NPTF)
Discharge Ports (2) ......................................3/8" NPTF
(3/8" NPTF)
Pulley Mounting...........................................Either Side
(Either Side)
Shaft Diameter....................................................0.650"
(16.5 mm)
Weight .............................................................13.4 lbs.
(6.1 kg)
Dimensions....................................10.24 x 8.78 x 5.35"
(260 x 223 x 136 mm)
3 Frame
Plunger Pump
231,241,271
237,247,277
Stainless
Steel
Models
Nickel Aluminum
Bronze
Models
®
“Customer confidence is our greatest asset”
DETERMINING
Rated G.P. M.
=
“Desired” G.P. M.
THE PUMP R.P.M.
Rated R.P. M.
“Desired” R.P. M.
DETERMINING
GPM x PSI
=
Electric Brake
THE REQUIRED H.P.
1460
H. P. Required
DETERMINING
Motor Pulley O.D.
=
Pump Pulley O.D.
MOTOR PULLEY SIZE
Pump R.P.M.
Motor R.P.M.
See complete Drive Packages [Inclds: Pulleys, Belts, Hubs, Key] Tech Bulletin 003.
Refer to pump Service Manual for repair procedure, additional technical information and pump warranty.
ELECTRIC HORSEPOWER REQUIREMENTS
MODEL
FLOW
PRESSURE
MOTOR PULLEY SIZE
PSI
PSI
PSI
Using 1725 RPM Motor &
1000 1200 1500
Std. 5.0" Pump Pulley O.D.
U.S.
BAR
BAR
BAR
RPM
Pulley
GPM
L/M
70
85
105
O.D.
271, 277
3.5
13.2
2.4
2.9
3.6
1450
4.1
3.0
11.4
2.1
2.5
3.1
1240
3.5
231, 237
2.3
8.7
1.6
1.9
2.4
1725
Direct Drive
241, 247
3.6
13.6
2.5
3.0
N/A
1725
Direct Drive
WARNING
All systems require both a primary pressure regulating device (i.e., regulator, unloader) and
a secondary pressure safety relief device (i.e., pop-off valve, safety valve). Failure to
install such relief devices could result in personal injury or damage to the pump or to
system components. CAT PUMPS does not assume any liability or responsibility for the
operation of a customer’s high pressure system.
