CAT Pumps 241 User manual

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 231AND 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 241AND 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 271AND 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 x8.78 x 5.35" (260 x 223 x136 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.

PARTS LIST
ITEM PART NUMBER DESCRIPTION QTY
231 237
241 247
271 MATL 277 MATL
2 30047 STL 30047 STL Key (M5x5x24) 1
5 92538 S 92538 S Screw, Sems HHC (M6x16) 8
8 27950 AL 27950 AL Cover, Bearing 2
10 26536 NBR 26536 NBR O-Ring, Bearing Cover - 70D 2
11 24159 NBR 24159 NBR Seal, Oil 2
15 14487 STL 14487 STL Bearing, Ball 2
20 48867 TNM 48867 TNM Rod, Connecting Assy 3
25 46946 FCM 46946 FCM Crankshaft, Dual End - 231, 237 (M7) 1
46951 FCM 46951 FCM Crankshaft, Dual End - 241, 247 (M11) 1
108062 FCM 108062 FCM Crankshaft, Dual End - 271, 277 (M12.7) 1
31 828710 — 828710 — Protector, Oil Cap w/Foam Gasket 1
32 43211 ABS 43211 ABS Cap, Oil Filler 1
33 14177 NBR 14177 NBR O-Ring, Oil Filler Cap - 70D 1
37 92241 — 92241 — Gauge, Oil Bubble w/Gasket - 80D 1
38 44428 NBR 44428 NBR Gasket, Flat, Oil Gauge - 80D 1
40 92542 S 92542 S Screw, Sems HHC (M6x20) 6
48 25625 STCP 25625 STCP Plug, Drain (1/4"x19BSP) 1
49 23170 NBR 23170 NBR O-Ring, Drain Plug - 70D 1
50 43339 AL 43339 AL Cover, Rear 1
51 43340 NBR 43340 NBR O-Ring, Rear Cover 1
53 44789 AL 44789 AL Crankcase, [07/05] 1
64 16948 CM 16948 CM Pin, Crosshead 3
65 45114 SSZZ 45114 SSZZ Rod, Plunger 3
69 20017 STZP 20017 STZP Washer, Oil Seal 3
126259 STCP R 126259 STCP R Washer, Oil (M24) 3
70 25301 NBR 25301 NBR Seal, Oil - 80D 3
71 26854 STZP 26854 STZP Washer, Oil Seal 3
126189 STCP R 126189 STCP R Washer, Oil Seal 3
75 43900 S 43900 S Slinger, Barrier 3
88 45697 S 45697 S Washer, Keyhole (M18) 3
90 43901 CC 43901 CC Plunger (M18x43) 3
95 126550 STCP R 126550 STCP R Stud, Plunger Retainer (M6x43) 3
96 43235 PTFE 43235 PTFE Back-up-Ring, Plunger Retainer 3
97 17399 NBR 17399 NBR O-Ring, Plunger Retainer - 80D 3
14160 FPM 14160 FPM O-Ring, Plunger Retainer - 70D 3
◆46204 EPDM ◆46204 EPDM O-Ring, Plunger Retainer - 70D 3
98 44041 SS 44041 SS Gasket, Plunger Retainer (M12.5) 3
99 44031 SS 44031 SS Retainer, Plunger (M6) 3
100 28597 PVDF 28597 PVDF Retainer, Seal 3
106 44053 NBR 44053 NBR Seal, LPS w/SS-Spg 3
44926 FPM 44926 FPM Seal, LPS w/SS-Spg 3
◆46651 EPDM ◆46651 EPDM Seal, LPS w/SS-Spg 3
110 46425 SS 44052 NAB Manifold, Inlet 1
116 15847 S 15847 S Lockwasher (M10) 2
117 87950 S 87950 S Screw, HSH (M10x35) 2
125 44652 SNG 44652 SNG Seal, HPS w/SS 3
44925 FPM 44925 FPM Seal, HPS w/SS 3
46652 HT* 46652 HT* Seal, HPS w/SS,2-Pc w/S - support 3
139 45156 SS 44563 NAB Plug, Inlet (1/2" NPT) 1
143 17547 NBR 17547 NBR O-Ring, Inlet Valve Adapter, Rear - 85D 3
11685 FPM 11685 FPM O-Ring, Inlet Valve Adapter, Rear - 85D 3
◆46648 EPDM ◆46648 EPDM O-Ring, Inlet Valve Adapter, Rear - 70D 3
150 44060 SS 44060 SS Adapter, Inlet Valve 3
154 43893 NBR 43893 NBR O-Ring, Inlet Valve Adapter, Front - 80D 3
44927 FPM 44927 FPM O-Ring, Inlet Valve Adapter, Front 3
◆46649 EPDM ◆46649 EPDM O-Ring, Inlet Valve Adapter, Front - 80D 3
155 26089 NBR 26089 NBR O-Ring, Discharge Valve Adapter, Rear - 80D 3
11377 FPM 11377 FPM O-Ring, Discharge Valve Adapter, Rear - 80D 3
◆46647 EPDM ◆46647 EPDM O-Ring, Discharge Valve Adapter, Rear - 80D 3
157 44059 SS 44059 SS Adapter, Discharge Valve 3
159 26089 NBR 26089 NBR O-Ring, Discharge Valve Adapter, Front - 80D 3
11377 FPM 11377 FPM O-Ring, Discharge Valve Adapter, Front - 80D 3
◆46647 EPDM ◆46647 EPDM O-Ring, Discharge Valve Adapter, Front - 80D 3
164 44058 SS 44058 SS Seat 6
165 44001 NBR 44001 NBR O-Ring, Seat - 80D 6
44928 FPM 44928 FPM O-Ring, Seat - 80D 6
◆46650 EPDM ◆46650 EPDM O-Ring, Seat - 80D 6
166 44057 SS 44057 SS Valve 6
167 44056 SS 44056 SS Spring 6
168 44055 SS 44055 SS Retainer, Spring 6
185 46427 SS 44054 NAB Manifold, Discharge 1
186 15847 S 15847 S Lockwasher (M10) 4
188 87952 S 87952 S Screw, HSH (M10x55) 4
250 25130 STCP 25130 STCP Protector, Shaft 1
260 30612 STZP 30612 STZP Rail, Angle Assy (Inclds: 26246,30901,30910,30920) 1
265 30651 — 30651 — Kit, Complete Mounting (30612,30246,25130) 1
270 30246 STL 30246 STL Pulley & Key Assy (Inclds: 30032,30047) [See Drive Packages, Tech Bulletin 003] 1
277 34121 AL 34121 AL Bell Housing Assy (56C, 2.0 Hp) 1
34126 AL 34126 AL Bell Housing Assy (182TC-184TC, 3.0 Hp) 1
278 8215 AL 8215 AL Flexible Coupling Assy (M16.5 to 5/8") 1
8220 AL 8220 AL Flexible Coupling Assy (M16.5 to 1-1/8") 1
283 34334 — 34334 — Kit, Oil Drain 1

EXPLODED VIEW
Models
Stainless Steel - 231, 241, 271
Nickel Aluminum Bronze - 237, 247, 277
December 2006
231 237
241 247
271 MATL 277 MATL
290 6124 — 6124 — Liquid Gasket (3 oz.) 1
299 814823 SS 815262 NAB Head, Complete 1
300 30983 NBR 30983 NBR Kit, Seal (Inclds: 97,106,125,143,154,155, 159,165) 1
33609 FPM 33609 FPM Kit, Seal (Inclds: 97,106,125,143,154,155,159,165) 1
◆33914 EPDM* ◆33914 EPDM* Kit, Seal (Inclds: 97,106,125,143,154,155,159,165) 1
33915 HT 33915 HT Kit, Seal, Hi Temp (Inclds: 97,106,125,143,154,155,159,165) 1
310 30982 NBR 30982 NBR Kit, Valve (Inclds: 143,154,155,164,165,166,167,168) 1
31216 FPM 31216 FPM Kit, Valve (Inclds: 143,154,155,164,165,166,167,168) 1
◆31217 EPDM ◆31217 EPDM Kit, Valve (Inclds: 143,154,155,164,165,166,167,168) 1
350 30696 STZP 30696 STZP Pliers, Reverse 1
390 711500 — 711500 — C.A.T. (For R.O. or Industrial Applications) 1
391 711502 — 711502 — Adapter (2 per C.A.T.) (See Data Sheet for complete selection) 2
— 6575 — 6575 — Plunger Pump Service DVD 1
— 6107 — 6107 — Oil, Bottle (21 oz.) ISO 68 Multi-viscosity Hydraulic 1
(Fill to specified crankcase capacity prior to start-up)
Bold print part numbers are unique to a particular pump model. Italics are optional items. ◆ Silicone oil/grease required.
R components comply with RoHS Directive. *Review material codes for individual items (HT generally may be used as alternate).
See Tech Bulletins 002, 003, 008, 024, 033, 034, 036, 043, 047, 049, 052, 053, 067, 073, 074, 077 and 083 for additional information.
C.A.T. highly recommended for pressurized inlet, R.O. and Industrial applications.
MATERIAL CODES (Not Part of Part Number): ABS=ABS Plastic AL=Aluminum CC=Ceramic CM=Chrome-Moly
EPDM=Ethylene Propylene Diene Monamer FCM=Forged Chrome-moly FPM=Fluorocarbon HT=Hi-Temp (EPDM Alternative) NAB=Nickel Aluminum Bronze
NBR=Medium Nitrile (Buna-N) PTFE=Pure Polytetrafluoroethylene PVDF=Polyvinylidene Fluoride S=304SS SS=316SS SNG=Special Blend (Buna)
SSZZ=316SS/Zamak STCP=Steel/Chrome Plated STL=Steel STZP=Steel/Zinc Plated TNM= Special High-Strenght

1Die cast aluminum crankcase means
high strength, lightweight, and excellent
tolerance control.
2Oversized crankshaft bearings provide ex-
tended bearing life and pump performance.
3Chrome-moly crankshaft provides un-
matched strength and surface hardness
for long life.
4Matched oversized TNM connecting
rods noted for superior tensile strength
and bearing quality.
5The plunger rods are high tensile strength
stainless steel with Zamak crossheads.
6The stainless steel slinger provides
back-up protection for the crankcase
seal, keeping pumped liquids out of the
crankcase.
7Special concentric, high density, polished,
solid ceramic plungers provide a true
wear surface and extended seal life
8 Manifolds are a high tensile strength 316
stainless steel or nickel aluminum bronze
for long term, continuous duty.
9100% wet seal design adds to service life
by allowing pumped liquids to cool and
lubricate on both sides.
10 Stainless steel valves, seats and springs
provide corrosion-resistance, ultimate
seating and extended life.
11 Specially formulated, CAT PUMP exclu-
sive, Hi-Pressure Seals offer unmatched
performance and seal life.
12 Crossheads are 360° supported for
uncompromising alignment.
3
1
2
4
56
12
78
8
9
10
10
11
Models 231, 241, 271, 237, 247, 277
PN 993245 Rev B 10606
Products described hereon are covered by one or more of the following U.S. patents 3558244, 3652188, 3809508, 3920356, 3930756 and 5035580
CAT PUMPS (U.K.) LTD.
1 Fleet Business Park, Sandy Lane, Church Crookham
FLEET, Hampshire, GU52 8BF, England
Phone Fleet 44 1252-622031 — Fax [phone]
e-mail: [email protected]
N.V. CAT PUMPS INTERNATIONAL S.A.
Heiveldekens 6A, B-2550 Kontich, Belgium
Phone [phone] — Fax [phone]
e-mail: [email protected] www.catpumps.be
CAT PUMPS DEUTSCHLAND GmbH
Buchwiese 2, D-65510 Idstein, Germany
Phone [phone] — Fax [phone]
e-mail: [email protected] www.catpumps.de
World Headquarters
CAT PUMPS
1681-94th Lane N.E. Minneapolis, MN 55449-4324
Phone [phone] — FAX [phone]
e-mail:[email protected]
www.catpumps.com
International Inquiries
FAX [phone]
e-mail:[email protected]
The Pumps with Nine Lives