®

5 Frame
Plunger Pump
Standard Models 310,340,350
Sleeved Models 310S, 340S,350S

W770 Models 310W,340W,350W

FEATURES SPECIFICATIONS U.S. Measure Metric Measure

MODEL 310, 310S, 310W

Superior Design Flow .....................................................................4.0 GPM (15 L/M)
● Triplex plunger design gives smoother liquid flow. Pressure Range ........................................100 to 2200 PSI (7 to 155 BAR)
RPM ....................................................................950 RPM (950 RPM)
● Hi-Pressure Seals are completely lubricated and cooled by Inlet Pressure Range ......................................–5 to 60 PSI (– 0.35 to 4 BAR)
the liquid being pumped. Stroke .....................................................................0.709" (18 mm)
● Inlet and discharge valve assemblies interchange for easier MODEL 340, 340S, 340W Direct Drive
maintenance. Flow .....................................................................4.0 GPM (15 L/M)
● Lubricated Lo-Pressure Seal provides double protection against Pressure Range ........................................100 to 1800 PSI (7 to 125 BAR)
external leakage. RPM ..................................................................1725 RPM (1725 RPM)
Inlet Pressure Range .............................Flooded to 60 PSI (Flooded to 4 BAR)
● Oil bath crankcase assures optimum lubrication. Stroke .....................................................................0.394" (10 mm)
● Close tolerance concentricity of the ceramic plunger maximizes
MODEL 350, 350S, 350W Direct Drive
seal life. Flow*.....................................................................5.0 GPM (19 L/M)
● Convenient direct drive electric motor options. Pressure Range .......................................100 to 1500 PSI (7 to 105 BAR)
RPM ..................................................................1725 RPM (1725 RPM)
Quality Materials Inlet Pressure Range .............................Flooded to 60 PSI (Flooded to 4 BAR)
● Precision design 304 stainless steel valves and seats are hardened Stroke .....................................................................0.472" (12 mm)
and polished for ultimate seating and extended valve life. *This specification for intermittent, fresh water duty.

● Forged brass, sleeved forged brass or special W770 alloy manifolds COMMON SPECIFICATIONS
for strength and corrosion resistance. Bore ..........................................................................0.787" (20 mm)
Crankcase Capacity ..................................................18 oz. (0.55 L)
● Special concentric, high-density, polished, solid ceramic plungers Maximum Liquid Temperature...................................160°F (71°C)
provide a true wear surface and extended seal life. Above 130°F call CAT PUMPS for inlet conditions and elastomer recommendations.
● Specially formulated, CAT PUMP exclusive, Hi-Pressure Seals offer Inlet Ports (2)......................................................1/2" NPTF (1/2" NPTF)
unmatched performance and seal life. Discharge Ports (2) ............................................3/8" NPTF (3/8" NPTF)
Shaft Diameter......................................................... 0.787" (20 mm)
● Die cast aluminum crankcase provides high strength, minimum Weight ...................................................................19.8 lbs. (9 kg)
weight and precision tolerance control. Dimensions .........................................11.73 x 10.0 x 5.24" (298 x 254 x 133 mm)
● Chrome-moly crankshaft gives unmatched strength and surface
hardness. ELECTRIC HORSEPOWER REQUIREMENTS
● Oversized crankshaft bearings with greater loading capacity mean MODEL FLOW PRESSURE MOTOR PULLEY SIZE
longer bearing life. PSI PSI PSI PSI PSI Using 1725 RPM Motor
1200 1500 1800 2000 2200 & Std. 8" Pump Pulley
Easy Maintenance U.S. BAR BAR BAR BAR BAR RPM Pulley
● Wet-end is easily serviced without entering crankcase, requiring less GPM L/M 85 105 125 140 155 O.D.
time and effort. 310 5.0 19 4.1 5.1 N/A N/A N/A 1190 5.5
● Valve assemblies are accessible without disturbing piping, for quick 4.0 15 3.3 4.1 5.0 5.5 6.0 950 4.4
3.0 11.4 2.5 3.1 3.7 4.2 4.5 713 3.3
service.
340 4.0 15 3.3 4.1 5.0 N/A N/A 1725 Direct Drive
● Preset packings mean no packing gland adjustment is necessary, 350 5.0 19 4.1 5.1 N/A N/A N/A 1725 Direct Drive
reducing maintenance costs.
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
WARNING
All systems require both a primary pressure regulating device (i.e., regulator, unloader) and THE REQUIRED H.P. 1460 H. P. Required
a secondary pressure safety relief device (i.e., pop-off valve, safety valve). Failure to DETERMINING Motor Pulley O.D. = Pump Pulley O.D.
install such relief devices could result in personal injury or damage to the pump or to MOTOR PULLEY SIZE Pump R.P.M. Motor R.P.M.
system components. CAT PUMPS does not assume any liability or responsibility for the
operation of a customer’s high pressure system. 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.

“Customer confidence is our greatest asset”

 PARTS LIST
ITEM PART NUMBER DESCRIPTION QTY
310 310S 310W
340 340S 340W
350 MATL 350S MATL 350W MATL
2 30057 STL 30057 STL 30057 STL Key (M6x6x25) 1
5 92519 STZP 92519 STZP 92519 STZP Screw, Sems HHC (M6x16) 8
125824 STCP R 125824 STCP R 125824 STCP R Screw, Sems HHC (M6x16) 8
8 43344 AL 43344 AL 43344 AL Cover, Bearing 1/2
10 43343 NBR 43343 NBR 43343 NBR O-Ring, Bearing Cover - 70D 2
11 43222 NBR 43222 NBR 43222 NBR Seal, Oil, Crankshaft - (310, 350-2) (340-1) 1/2
15 14480 STL 14480 STL 14480 STL Bearing, Ball 2
20 45883 HS 45883 HS 45883 HS Rod, Connecting Assy [09/05] 3
25 43342 FCM 43342 FCM 43342 FCM Crankshaft, Dual End - 310, 310S, 310W 1
44945 FCM 44945 FCM 44945 FCM Crankshaft, Single End - 340, 340S, 340W 1
43838 FCM 43838 FCM 43838 FCM Crankshaft, Dual End - 350, 350S, 350W 1
30 44949 AL 44949 AL 44949 AL Cover, Blind Shaft - 340 1
31 828710 — 828710 — 828710 — Protector, Oil Cap w/Foam Gasket 1
32 43211 ABS 43211 ABS 43211 ABS Cap, Oil Filler 1
33 14177 NBR 14177 NBR 14177 NBR O-Ring, Filler Cap - 70D 1
37 92241 — 92241 — 92241 — Gauge, Oil, Bubble w/Gasket 1
38 44428 NBR 44428 NBR 44428 NBR Gasket, Flat, Oil Gauge - 80D 1
40 92520 STZP 92520 STZP 92520 STZP Screw, Sems HHC (M6x20) 4
126541 STCP R 126541 STCP R 126541 STCP R Screw, Sems HHC (M6x20) 4
48 25625 STCP 25625 STCP 25625 STCP Plug, Drain (1/4"x19 BSP) 1
49 23170 NBR 23170 NBR 23170 NBR O-Ring, Drain Plug - 70D 1
50 48772 AL 48772 AL 48772 AL Cover, Rear [10/01] 1
51 48773 NBR 48773 NBR 48773 NBR O-Ring, Rear Cover [10/01] 1
53 48769 AL 48769 AL 48769 AL Crankcase [05/02] 1
56 43355 POP 43355 POP 43355 POP Pan, Oil 1
64 43351 CM 43351 CM 43351 CM Pin, Crosshead 3
65 43365 ZZCP 43365 ZZCP 43365 ZZCP Rod, Plunger 3
70 43228 NBR 43228 NBR 43228 NBR Seal, Oil, Crankcase 3
75 43328 S 43328 S 43328 S Slinger, Barrier 3
88 45697 S 45697 S 45697 S Washer, Keyhole (M18) 3
90 43367 CC 43367 CC 43367 CC Plunger (M20x72) 3
96 43235 PTFE 43235 PTFE 43235 PTFE Back-up-Ring, Plunger Retainer 3
97 17399 NBR 17399 NBR 17399 NBR O-Ring, Plunger Retainer - 80D 3
14160 FPM 14160 FPM 14160 FPM O-Ring, Plunger Retainer - 70D 3
◆ 46204 EPDM ◆ 46204 EPDM ◆ 46204 EPDM O-Ring, Plunger Retainer - 70D 3
98 45891 CU 45891 CU 45891 CU Gasket 3
99 104360 S 104360 S 104360 S Retainer, Plunger w/Stud 3
100 45688 PVDF 45688 PVDF 45688 PVDF Retainer, 2-Pc [04/06] 3
101 43302 — 43302 — 43302 — Wick, Long Tab 3
106 43305 NBR 43305 NBR 43305 NBR Seal, LPS w/S-Spg 3
45153 FPM 45153 FPM 45153 FPM Seal, LPS w/SS-Spg 3
◆ 48429 EPDM ◆ 48429 EPDM ◆ 48429 EPDM Seal, LPS w/SS-Spg 3
120 45679 BB 45679 BB 45679 BB Case, Seal 3
121 14200 NBR 14200 NBR 14200 NBR O-Ring, Seal Case - 70D 3
11719 FPM 11719 FPM 11719 FPM O-Ring, Seal Case 3
◆ 48907 EPDM ◆ 48907 EPDM ◆ 48907 EPDM O-Ring, Seal Case 3
125 43307 SNG 43307 SNG 43307 SNG Seal, HPS w/S 3
44936 FPM 44936 FPM 44936 FPM Seal, HPS w/SS 3
46667 HT* 46667 HT* 46667 HT* Seal, HPS “Hi-Temp”, 2-Pc w/S-Support 3
139 22179 BBCP 22179 BBCP 22179 BBCP Plug, Inlet (1/2" NPT) 1
162 48361 D 48361 D 48361 D Back-up-Ring, Seat 6
163 43358 NBR 43358 NBR 43358 NBR O-Ring, Seat - 70D 6
44938 FPM 44938 FPM 44938 FPM O-Ring, Seat - 70D 6
◆ 48908 EPDM ◆ 48908 EPDM ◆ 48908 EPDM O-Ring, Seat 6
164 43725 S 43725 S 43725 S Seat 6
166 43723 S 43723 S 43723 S Valve 6
167 43750 S 43750 S 43750 S Spring, Valve 6
168 44565 PVDF 44565 PVDF 44565 PVDF Retainer, Valve Spring 6
172 17615 NBR 17615 NBR 17615 NBR O-Ring, Valve Plug - 75D 6
15855 FPM 15855 FPM 15855 FPM O-Ring, Valve Plug -70D 6
◆ 48431 EPDM ◆ 48431 EPDM ◆ 48431 EPDM O-Ring, Valve Plug -75D 6
174 43849 BBCP 43849 BBCP 43849 BBCP Plug, Valve 6
185 44837 BBCP — — 46825 W770 Head, Manifold 1
— — 46278 FBB — — Head, Manifold, Sleeved 1
188 124396 STZP 124396 STZP 124396 STZP Screw, Sems HSH (M10x35) [01/04] 2
126520 STCP R 126520 STCP R 126520 STCP R Screw, Sems HSH (M10x35) 2
250 118672 STCP 118672 STCP 118672 STCP Protector, Shaft (Belt Drive Only) 1
255 30243 STZP 30243 STZP 30243 STZP Mount, Direct (Belt Drive Only) 1
260 30611 STZP 30611 STZP 30611 STZP Mounting, Angle Rail - B 1
(28499,30900,30910,30920) (Belt Drive Only)
265 30659 — 30659 — 30659 — Mount, Assy 1
(30611,30633,118672) (Belt Drive Only)
270 30633 STL 30633 STL 30633 STL Assy, Pulley & Key (30058,30057) (Belt Drive Only) 1
275 30944 STL 30944 STL 30944 STL Assy, Hub & Key (M20 w/M6 Keyway) (Belt Drive Only) 1
[See Drive Packages, Tech Bulletin 003]
283 34334 — 34334 — 34334 — Kit, Oil Drain 1
298 34962 STZP 34962 STZP 34962 STZP Clutch Assy, Single Groove, 20mm, 12VDC 1
34963 STZP 34963 STZP 34963 STZP Clutch Assy, Dual Groove, 20mm, 12VDC 1
299 810027 BBCP 816551 FBB 810027W W770 Head, Complete 1
 EXPLODED VIEW

31

250 32

30
10
11 33
15
5 20

40
37

38

25 48
49

283
50
51
56

65
70 15
75 11 2
88 64 10
53 8
174
100
172 5
168
90 167
98 101 166
96
97 164
99
163
162

106
120 260
185 121
125
DISHCARGE

INLET 139

162
164
163 Models
166
167 188 Standard - 310, 340, 350
172
168 Sleeved - 310S, 340S, 350S
174 W770 - 310W, 340W, 350W
October 2006
310 310S 310W
340 340S 340W
350 MATL 350S MATL 350W MATL
300 30623 NBR 30623 NBR 30623 NBR Kit, Seal (Inclds: 97,101,106,121,125) 1
34155 FPM 34155 FPM 34155 FPM Kit, Seal (Inclds: 97,101,106,121,125) 1
33623 HT 33623 HT 33623 HT Kit, Seal, “Hi-Temp” (Inclds: 97,101,106,121,125) 1
◆ 31163 EPDM* ◆ 31163 EPDM* ◆ 31163 EPDM* Kit, Seal (Inclds: 97,101,106,121,125) 1
310 30821 NBR 30821 NBR 30821 NBR Kit, Valve (Inclds: 162-164,166-168,172) 2
31821 FPM 31821 FPM 31821 FPM Kit, Valve (Inclds: 162-164,166-168,172) 2
◆ 31162 EPDM ◆ 31162 EPDM ◆ 31162 EPDM Kit, Valve (Inclds: 162-164,166-168,172) 2
350 30696 STZP 30696 STZP 30696 STZP Plier, Reverse 1
351 33004 STZP 33004 STZP 33004 STZP Socket, Seal Case (1/2" Drive) 1
— — — — — — — BD Motors - See Individual Data Sheet
— 6107 — 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.
[ ] Date of latest production change. *Review material codes for individual items (HT generally may be used as alternate). Add .3000 to part numbers for Hi-Temp model.
See Tech Bulletins 002, 003, 008, 024, 027, 032, 035, 036, 043, 045, 046, 049, 052, 053, 054, 073, 074, 077, 079, 083 and 090 for additional information.
MATERIAL CODES (Not Part of Part Number): ABS=ABS Plastic AL=Aluminum BB=Brass BBCP=Brass/Chrome Plated CC=Ceramic CM=Chrome-moly CU=Copper
D=Acetal EPDM=Ethylene Propylene Diene Monomer FBB=Forged Brass FCM=Forged Chrome-moly FPM=Fluorocarbon HS=High Strength
HT=High Temp (EPDM Alternative) NBR=Medium Nitrile (Buna-N) POP=Polypropylene PTFE=Pure Polytetrafluoroethylene PVDF=Polyvinylidene Fluoride S=304SS
SNG=Special Blend (Buna) SS=316SS STL=Steel STCP=Steel/Chrome Plated STZP=Steel/Zinc Plated W770=Special Alloy ZZCP=Chrome Plated/Steel - Zamak
 11.73 (298)
8.94 (227) 2.79 (71)
7.79 (198)
4.72 (120) 6.69 (170)
(2) 3/8" NPTF DISCHARGE

.787 (20)

.236 (6)

1.10
(28)
5.24 (133)

1.10
(28)
2.75 (70)

3.15 (80) 4 - M9 .79

.62 (16)
.31 (8)
(2) 1/2" NPTF INLET 4.92 (125) (20)
3.78 (96) 1.46
4.44 (113) (37)
10.0 (254) 4.92 (125) 1.22 (31)
4 - M8

Models 310, 340, 350, 310S, 340S, 350S, 310W, 340W, 350W

10

12 9 11
2 13

3 4 6 7 8
5

8 13
10

13

Model 310S Shown

1 Die cast aluminum crankcase means 6 The stainless steel slinger provides 10 Stainless steel valves, seats and springs
high strength, lightweight, and excellent back-up protection for the crankcase provide corrosion-resistance, ultimate
tolerance control. seal, keeping pumped liquids out of the seating and extended life.
2 Oversized crankshaft bearings provide ex- crankcase. 11 Specially formulated, CAT PUMP exclu-
tended bearing life and pump performance. 7 Special concentric, high-density, polished, sive, Hi-Pressure Seals offer unmatched
3 Chrome-moly crankshaft provides solid ceramic plungers provide a true performance and seal life.
unmatched strength and surface hard- wear surface and extended seal life. 12 Crossheads are 360° supported for
ness for long life. 8 Manifolds are a high tensile strength uncompromising alignment.
4 Matched oversized high strength connect- forged brass, 316 stainless steel sleeved or 13 Precision, press-fit, 304 stainless steel
ing rods noted for superior tensile W770 alloy for long life, continuous duty sleeves in both the seal and valve chambers
strength and bearing quality. and compatibility. provide extended life (S models only).
5 Special high strength plunger rods 9 100% wet seal design adds to service
with Zamak crossheads for longevity and life by allowing pumped liquids to cool
corrosion resistant. and lubricate on both sides.

World Headquarters CAT PUMPS (U.K.) LTD.

1 Fleet Business Park, Sandy Lane, Church Crookham, Fleet
CAT PUMPS Hampshire GU52 8BF, England
1681 - 94th Lane N.E. Minneapolis, MN 55449 - 4324 Phone Fleet 44 1252-622031 — Fax 44 1252-626655
e-mail: sales@catpumps.co.uk
Phone (763) 780-5440 — FAX (763) 780-2958 N.V. CAT PUMPS INTERNATIONAL S. A.
e-mail: techsupport@catpumps.com Heiveldekens 6A, B-2550 Kontich, Belgium
www.catpumps.com The Pumps with Nine Lives Phone 32- 3- 450.71.50 — Fax 32-3- 450.71.51
e-mail: cpi@catpumps.be www.catpumps.be
International Inquiries CAT PUMPS DEUTSCHLAND GmbH
FAX (763) 785-4329 Buchwiese 2, D-65510 Idstein, Germany
Phone 49 6126-9303 0 — Fax 49 6126-9303 33
e-mail: intlsales@catpumps.com e-mail: catpumps@t-online.de www.catpumps.de

PN 993111 Rev F 9617