InterpumpPumps & Compressors

Interpump PUMP WS151 DX U.S. + GEARBOX RS500

Interpump WS151 DX is a 5.5 hp industrial pump delivering 15 L/min at 150 bar, paired with RS500 gearbox for high-pressure applications. Operating at 1450 rpm with 4.04 kW power rating, it suits demanding hydraulic…

SKU 3G-ITP-01862

Also listed as: WS015100UR001 · WS015100U R001

Brand

Interpump

Item

PUMP WS151 DX U.S. + GEARBOX RS500

Local availability & support — Singapore

Local office: 20 Woodlands Link #09-05, Singapore 738733
Phone: +65 8878 8355
Delivery: Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment: Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to: Singapore

Technical Specifications

Interpump

Flow Rate

15 L/min

Pressure

150 bar

Power

4.04 kW

Speed

1450 RPM

Weight

14.5 kg

Dimensions

317.5 mm

Power

5.5 HP

Flow (US)

3.96 GPM

Pressure

15 MPa

Pressure

2175 PSI

Datasheet Content

WS151




TECHNICAL INFORMATION
Flow (L/min)                        15
Flow (US Gpm)                       3,96
Rotation regime (rpm)               1450
Pressure (MPa)                      15
Pressure (bar)                      150
Pressure (psi)                      2175
Power (hp)                          5,5
Power (kW)                          4,04
Overall dimensions L x l x h (mm)   317,5x236x180
Weight (kg)                         14,5




WS151                                               3/21/2026   Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
WS151

     Documents

Male shaft (key)

Male shaft (key) - vers. ATEX




WS151                             3/21/2026   Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)




WS151                             3/21/2026   Page 3 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.    Code            Description                   Qty Notes
KIT71   34007101        KIT 71 INTERMEDIATE RING      1
                        D.20
KIT7    34000701        KIT 7 HEAD RING D.20          1
KIT69   34006901        KIT 69 PACKING D.20 W/RESTOP 1


KIT6    34000601        KIT 6 PISTON BOLT             1
KIT4    34000401        KIT 4 INTAKE/DEL. VALVE CAPS 1


KIT3    34000301        KIT 3 OIL SEAL D.30X55X7      1
KIT28   34002801        KIT 28 COMPL.SEAL FOR         1
                        PIST.D20
KIT2    34000201        KIT 2 OIL SEAL D. 22X32X5,5   1

KIT10   34001001        KIT 10 PACKING RETAINER D.20 1


KIT1    34000101        KIT 1 INTAKE/DELIVERY VALVE 1


56      90271000        PACKING D.20X35X9 L.P.        3
54      96738000        WASHER 17,5X23X1,5            1
53      98210000        PLUG G3/8X13                  1
52      96751400        WASHER 21,5X27X1,5            1
51      98217600        PLUG G1/2X10                  1
50      96710600        WASHER 10,2                   4
49      99364400        SCREW M 10x18-5931            4
48      47200074        PUMP FOOT                     2
47      90270400        RESTOP RING D. 20 TYPE 6/1    3


46      47216970        INTERM.RING D. 20 (SPEC.)     3


45      47100051        HEAD RING D. 20               3
44      90270500        PACKING 20x35x7,5             3
43      47080570        PACKING RETAINER D. 20x35     3


42      90361600        O-RING 34,65X1,78 (2137)      3
41      90164800        OIL SEAL 30x55x7              1
40      97568000        SHIM D.74.5X104X0.3           1
40      97567800        SHIM D.74,5X104X0,1           1
39      47151022        OPEN SIDE COVER (47-66)       1
38      47219566        PISTON SCREW                  3
37      96728000        WASHER 14X18,5X0,5            3
36      90506700        ANTI-EXTRUSION RING           3
35      47040409        PISTON D. 20x50               3
34      96728600        WASHER 14X28X0,5              3
32      99309900        SCREW M 8x35 UNI 5931         6
31      90358500        O-RING 10,82X1,78 (2043)      4




WS151                                                             3/21/2026   Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.   Code             Description                   Qty Notes

30     98204250         PLUG G1/4"x12                 1
29     47221301         OIL SIGHT GLASS ASSY G3/4     1


28     47160622         CRANKCASE COVER               1
27     99188400         SCREW M 6x20 UNI 5931         5
26     47030001         CONNECTING ROD                3
25     47050466         PISTON GUIDE - S.S.           3
24     97738000         CONNECTING-ROD PIN            3
                        D.13X35,5
23     91489200         KEY 8(h9)X7X35 UNI 6604/A     1


22     90055700         CIRCLIP D.12 UNI 7435         6
21     47021835         CRANKSHAFT C.12 S.p.f. U.S.   1


20     90392200         O-RING D.133.02X 2,62(3525)   1


19     98210600         OIL DIP-STICK G3/8X80         1
18     47010822         CRANKCASE                     1
17     90912600         BUSHING 22X25X30              3
16     90162500         OIL SEAL 22x32x5              3
15     91837500         TAPER BEARING                 2
14     90391300         O-RING 67,95X2,62 (3268)      2
13     47151122         CLOSED SIDE COVER (47-66)     1


12     99303900         SCREW M 8x16 UNI 5931         8
11     36703201         VALVE ASSY.                   6
10     98222000         CAP M24X2X16                  6
9      90384700         O-RING 20,29X2,62(3081)       6
8      36200251         VALVE CAGE                    6
7      94737600         SPRING D. 9,4X14,8            6
6      36200176         VALVE PLATE                   6
5      36200366         VALVE SEAT                    6
4      90384100         O-RING 17,12X2,62 (3068)      6
2      99320600         HEX-HEAD SCREW M08X70         8
                        UNI5737 10.9 Fe/Zn5c1A+De

1      47120141         MANIFOLD                      1




WS151                                                             3/21/2026   Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX




WS151                                        3/21/2026   Page 6 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX

Pos.    Code            Description                   Qty Notes
KIT71   34007101        KIT 71 INTERMEDIATE RING      1
                        D.20
KIT69   34006901        KIT 69 PACKING D.20 W/RESTOP 1

KIT28   34002801        KIT 28 COMPL.SEAL FOR         1
                        PIST.D20
KIT10   34001001        KIT 10 PACKING RETAINER D.20 1


KIT7    34000701        KIT 7 HEAD RING D.20          1
KIT6    34000601        KIT 6 PISTON BOLT             1
KIT4    34000401        KIT 4 INTAKE/DEL. VALVE CAPS 1


KIT3    34000301        KIT 3 OIL SEAL D.30X55X7      1
KIT2    34000201        KIT 2 OIL SEAL D. 22X32X5,5   1


KIT1    34000101        KIT 1 INTAKE/DELIVERY VALVE 1


62      99180900        SCREW M06X10 5931 A2-70       1
61      96693950        WASHER 6.4x11.0x0.7 D6798A    1
                        INOX
60      90075500        STOP RING J45 UNI7437         1
59      70211751                                      1
58      90387700        O-RING 39,34X2,62 (3156)      1
56      90271000        PACKING D.20X35X9 L.P.        3
54      96738000        WASHER 17,5X23X1,5            1
53      98210000        PLUG G3/8X13                  1
52      96751400        WASHER 21,5X27X1,5            1
51      98217600        PLUG G1/2X10                  1
50      96710600        WASHER 10,2                   4
49      99364400        SCREW M 10x18-5931            4
48      47200074        PUMP FOOT                     2
47      90270400        RESTOP RING D. 20 TYPE 6/1    3


46      47216970        INTERM.RING D. 20 (SPEC.)     3

45      47100051        HEAD RING D. 20               3
44      90270500        PACKING 20x35x7,5             3
43      47080570        PACKING RETAINER D. 20x35     3


42      90361600        O-RING 34,65X1,78 (2137)      3
41      90164800        OIL SEAL 30x55x7              1
40      97568000        SHIM D.74.5X104X0.3           1
40      97567800        SHIM D.74,5X104X0,1           1
39      47151022        OPEN SIDE COVER (47-66)       1
38      47219566        PISTON SCREW                  3




WS151                                                             3/21/2026   Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX

Pos.   Code             Description                   Qty Notes

37     96728000         WASHER 14X18,5X0,5            3
36     90506700         ANTI-EXTRUSION RING           3
35     47040409         PISTON D. 20x50               3
34     96728600         WASHER 14X28X0,5              3
32     99309900         SCREW M 8x35 UNI 5931         6
31     90358500         O-RING 10,82X1,78 (2043)      4
30     98203600         PLUG G1/4x8 FOR PROBE D.6     1
                        S.S.
29     47221301         OIL SIGHT GLASS ASSY G3/4     1


28     47160622         CRANKCASE COVER               1
27     99188400         SCREW M 6x20 UNI 5931         5
26     47030001         CONNECTING ROD                3
25     47050466         PISTON GUIDE - S.S.           3
24     97738000         CONNECTING-ROD PIN            3
                        D.13X35,5
23     91489200         KEY 8(h9)X7X35 UNI 6604/A     1


22     90055700         CIRCLIP D.12 UNI 7435         6
21     47021835         CRANKSHAFT C.12 S.p.f. U.S.   1


20     90392200         O-RING D.133.02X 2,62(3525)   1


19     98210700         OIL DIPSTICK G3/8X64          1
                        D4+FILTER ATEX
18     47010822         CRANKCASE                     1
17     90912600         BUSHING 22X25X30              3
16     90162500         OIL SEAL 22x32x5              3
15     91837500         TAPER BEARING                 2
14     90391300         O-RING 67,95X2,62 (3268)      2
13     47151322         SIDE CRANKCASE COVER (ATEX) 1


12     99303900         SCREW M 8x16 UNI 5931         8
11     36703201         VALVE ASSY.                   6
10     98222000         CAP M24X2X16                  6
9      90384700         O-RING 20,29X2,62(3081)       6
8      36200251         VALVE CAGE                    6
7      94737600         SPRING D. 9,4X14,8            6
6      36200176         VALVE PLATE                   6
5      36200366         VALVE SEAT                    6
4      90384100         O-RING 17,12X2,62 (3068)      6
2      99320600         HEX-HEAD SCREW M08X70         8
                        UNI5737 10.9 Fe/Zn5c1A+De

1      47120141         MANIFOLD                      1




WS151                                                             3/21/2026   Page 8 - 8
Copyright INTERPUMP GROUP S.P.A

Technical Documents

(1)

Technical Data Sheet

PDF Document

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Interpump Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the Interpump WS151 DX U.S. + RS500 gearbox pump used for?

The Interpump WS151 DX U.S. pump paired with the RS500 gearbox is used for high-pressure industrial cleaning and hydraulic systems. It delivers 15 L/min at 150 bar, making it suitable for demanding applications such as pressure washing, water jetting, and fluid transfer in manufacturing and marine environments.

What are the specifications of the Interpump WS151 DX U.S. pump?

The Interpump WS151 DX U.S. pump has a power rating of 5.5 hp (4.04 kW), delivers 15 L/min at 150 bar, and operates at 1450 rpm. It weighs 14.5 kg and has overall dimensions of 317.5 x 236 x 180 mm. The pump features a male shaft (key) design and is manufactured by Interpump Group S.P.A.

Where to buy the Interpump WS151 DX U.S. + RS500 gearbox in Singapore?

You can source the Interpump WS151 DX U.S. pump and RS500 gearbox through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this high-pressure pump package.

How to maintain the Interpump WS151 DX U.S. pump?

Regular maintenance of the Interpump WS151 DX U.S. pump includes checking oil seals (e.g., kit 3 and kit 2), replacing packing rings (kit 69), and inspecting intake/delivery valves (kit 1). Always use genuine Interpump spare parts and follow the manufacturer's service intervals for optimal performance.

Used in

Common applications for Interpump

Shipyard hull cleaning and surface prep — HT100 and W951 paired with dual-lance guns for dockyard service

Petrochemical heat-exchanger descaling — WS-series stainless pumps for neutral-pH cleaning chemistry

Outdoor HVAC condenser mist cooling — ZP180 pumps on rooftop chiller decks

Textile fibre-finishing — W170 and W270 for mist-jet application across drying lines

Municipal water treatment — W951 motor pumps for high-pressure disinfection chemical injection

Spare Parts & Repair Kits

Official WS151 parts list — 129 parts, 63 available in catalog

Official Parts List

WS151 — Male shaft (key) exploded diagram

Repair Kits — Order These for Routine Maintenance

KIT1

KIT 1 INTAKE/DELIVERY VALVE

34000101×1Available

Interpump PUMP WS151 DX U.S. + GEARBOX RS500

Local availability & support — Singapore

Technical Specifications

Datasheet Content

Technical Documents

Need installation or engineering help?

Ask a question

Product Description

Frequently Asked Questions

Used in

Spare Parts & Repair Kits

Interpump Products

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