InterpumpPumps & Compressors

Interpump PUMP WS1625 R ATEX

The Interpump WS1625 R ATEX is an industrial gear pump rated for 7.72 kW at 1450 rpm, delivering 25 L/min at 160 bar for high-pressure fluid transfer in hazardous environments. Its compact 327 mm length suits…

SKU 3G-ITP-01966

Also listed as: WS1625EX000 · WS1625EX 000

Brand

Interpump

Item

PUMP WS1625 R ATEX

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

25 L/min

Pressure

160 bar

Power

7.72 kW

Speed

1450 RPM

Weight

15 kg

Dimensions

327 mm

Power

10.5 HP

Flow (US)

6.6 GPM

Pressure

16 MPa

Pressure

2320 PSI

Datasheet Content

WS1625




TECHNICAL INFORMATION
Flow (L/min)                        25
Flow (US Gpm)                       6,60
Rotation regime (rpm)               1450
Pressure (MPa)                      16
Pressure (bar)                      160
Pressure (psi)                      2320
Power (hp)                          10,5
Power (kW)                          7,72
Overall dimensions L x l x h (mm)   327x236x180
Weight (kg)                         15




WS1625                                            3/21/2026   Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
WS1625

     Documents

Male shaft (key)

Male shaft (key) - vers. ATEX




WS1625                            3/21/2026   Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)




WS1625                            3/21/2026   Page 3 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.     Code           Description                   Qty Notes
KIT6     34000601       KIT 6 PISTON BOLT             1
KIT3     34000301       KIT 3 OIL SEAL D.30X55X7      1
KIT29    34002901       KIT 29 COMPL.SEAL FOR         1
                        PIST.D22
KIT2     34000201       KIT 2 OIL SEAL D. 22X32X5,5   1

KIT169   34016901       KIT 169 INTAKE/DEL.VALVE (66) 1

KIT149   34014901       KIT 149 INT.RING D.22         1
                        W/RESTOP
KIT148   34014801       KIT 148 SEAL D.22X35          1
KIT14    34001401       KIT 14 PACKING RETAINER D.22 1

KIT11    34001101       KIT 11 HEAD RING D. 22        1
54       96738000       WASHER 17,5X23X1,5            1
53       98210000       PLUG G3/8X13                  1
52       96770000       WASHER 26,5X32X1,5            1
51       98226800       PLUG G3/4X16                  1
50       46100051       HEAD RING D. 22               3
49       90272500       PACKING 22x35                 3
48       90273000       RESTOP RING D.22 TYPE 6/1     3


47       47217070       INTERMEDIATE RING             3
                        D.22-RESTOP
46       90272800       PACKING 22X35X9 LP            3
45       47080670       PACKING RETAINER D. 22x35     3


44       90361600       O-RING 34,65X1,78 (2137)      3
43       99364400       SCREW M 10x18-5931            4
42       96710600       WASHER 10,2                   4
41       47200074       PUMP FOOT                     2
40       90164800       OIL SEAL 30x55x7              1
40       97567800       SHIM D.74,5X104X0,1           1
39       97568000       SHIM D.74.5X104X0.3           1
38       47151022       OPEN SIDE COVER (47-66)       1
37       47219566       PISTON SCREW                  3
36       96728000       WASHER 14X18,5X0,5            3
35       90506700       ANTI-EXTRUSION RING           3
34       47040509       PISTON D. 22x50               3
33       96728600       WASHER 14X28X0,5              3
32       47225570       SPACER D.14X20.5X2.5          3
31       90055700       CIRCLIP D.12 UNI 7435         6
30       97738000       CONNECTING-ROD PIN            3
                        D.13X35,5
29       47221301       OIL SIGHT GLASS ASSY G3/4     1




WS1625                                                            3/21/2026   Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.   Code             Description                   Qty Notes

28     98204250         PLUG G1/4"x12                 1
27     90358500         O-RING 10,82X1,78 (2043)      4
26     99188400         SCREW M 6x20 UNI 5931         5
25     47160622         CRANKCASE COVER               1
24     99309900         SCREW M 8x35 UNI 5931         6
23     47030001         CONNECTING ROD                3
22     47050466         PISTON GUIDE - S.S.           3
21     91489200         KEY 8(h9)X7X35 UNI 6604/A     1


20     47021735         CRANKSHAFT C.16 S.p.f. U.S.   1


19     90392200         O-RING D.133.02X 2,62(3525)   1


18     47010822         CRANKCASE                     1
17     98210600         OIL DIP-STICK G3/8X80         1
16     90912600         BUSHING 22X25X30              3
15     90162500         OIL SEAL 22x32x5              3
14     91837500         TAPER BEARING                 2
13     90391300         O-RING 67,95X2,62 (3268)      2
12     47151122         CLOSED SIDE COVER (47-66)     1


11     99303900         SCREW M 8x16 UNI 5931         8
10     36712701         INTAKE/DEL.VALVE ASSY(66)     6


9      98230000         PLUG M32X1,5X17,5             6
8      90386400         O-RING D.28.25x2.62 90sh(3112) 6


7      36203551         VALVE CAGE                    6
6      94738800         SPRING Dm. 10x18.5            6
5      36203476         SPHERICAL VALVE               6
4      36203366         VALVE SEAT                    6
3      90385700         O-RING 23,81X2,62 (132)       6
2      99322000         SCREW M8X75 UNI5931 12.9      8
1      47123041         PUMP MANIFOLD                 1




WS1625                                                            3/21/2026   Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX




WS1625                                       3/21/2026   Page 6 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX

Pos.     Code           Description                   Qty Notes
KIT6     34000601       KIT 6 PISTON BOLT             1
KIT3     34000301       KIT 3 OIL SEAL D.30X55X7      1
KIT29    34002901       KIT 29 COMPL.SEAL FOR         1
                        PIST.D22
KIT2     34000201       KIT 2 OIL SEAL D. 22X32X5,5   1

KIT169   34016901       KIT 169 INTAKE/DEL.VALVE (66) 1

KIT149   34014901       KIT 149 INT.RING D.22         1
                        W/RESTOP
KIT148   34014801       KIT 148 SEAL D.22X35          1
KIT14    34001401       KIT 14 PACKING RETAINER D.22 1

KIT11    34001101       KIT 11 HEAD RING D. 22        1
60       99180900       SCREW M06X10 5931 A2-70       1
59       96693950       WASHER 6.4x11.0x0.7 D6798A    1
                        INOX
57       90387700       O-RING 39,34X2,62 (3156)      1
56       70211751                                     1
55       90075500       STOP RING J45 UNI7437         1
54       96738000       WASHER 17,5X23X1,5            1
53       98210000       PLUG G3/8X13                  1
52       96770000       WASHER 26,5X32X1,5            1
51       98226800       PLUG G3/4X16                  1
50       46100051       HEAD RING D. 22               3
49       90272500       PACKING 22x35                 3
48       90273000       RESTOP RING D.22 TYPE 6/1     3


47       47217070       INTERMEDIATE RING             3
                        D.22-RESTOP
46       90272800       PACKING 22X35X9 LP            3
45       47080670       PACKING RETAINER D. 22x35     3


44       90361600       O-RING 34,65X1,78 (2137)      3
43       99364400       SCREW M 10x18-5931            4
42       96710600       WASHER 10,2                   4
41       47200074       PUMP FOOT                     2
40       90164800       OIL SEAL 30x55x7              1
40       97567800       SHIM D.74,5X104X0,1           1
39       97568000       SHIM D.74.5X104X0.3           1
38       47151022       OPEN SIDE COVER (47-66)       1
37       47219566       PISTON SCREW                  3
36       96728000       WASHER 14X18,5X0,5            3
35       90506700       ANTI-EXTRUSION RING           3
34       47040509       PISTON D. 22x50               3




WS1625                                                            3/21/2026   Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX

Pos.   Code             Description                   Qty Notes

33     96728600         WASHER 14X28X0,5              3
32     47225570         SPACER D.14X20.5X2.5          3
31     90055700         CIRCLIP D.12 UNI 7435         6
30     97738000         CONNECTING-ROD PIN            3
                        D.13X35,5
29     98226600         PLUG G3/4X16 S.S.             1
28     98203600         PLUG G1/4x8 FOR PROBE D.6     1
                        S.S.
27     90358500         O-RING 10,82X1,78 (2043)      4
26     99188400         SCREW M 6x20 UNI 5931         5
25     47160622         CRANKCASE COVER               1
24     99309900         SCREW M 8x35 UNI 5931         6
23     47030001         CONNECTING ROD                3
22     47050466         PISTON GUIDE - S.S.           3
21     91489200         KEY 8(h9)X7X35 UNI 6604/A     1


20     47021735         CRANKSHAFT C.16 S.p.f. U.S.   1


19     90392200         O-RING D.133.02X 2,62(3525)   1


18     47010822         CRANKCASE                     1
17     98210700         OIL DIPSTICK G3/8X64          1
                        D4+FILTER ATEX
16     90912600         BUSHING 22X25X30              3
15     90162500         OIL SEAL 22x32x5              3
14     91837500         TAPER BEARING                 2
13     90391300         O-RING 67,95X2,62 (3268)      2
12     47151322         SIDE CRANKCASE COVER (ATEX) 1


11     99303900         SCREW M 8x16 UNI 5931         8
10     36712701         INTAKE/DEL.VALVE ASSY(66)     6


9      98230000         PLUG M32X1,5X17,5             6
8      90386400         O-RING D.28.25x2.62 90sh(3112) 6

7      36203551         VALVE CAGE                    6
6      94738800         SPRING Dm. 10x18.5            6
5      36203476         SPHERICAL VALVE               6
4      36203366         VALVE SEAT                    6
3      90385700         O-RING 23,81X2,62 (132)       6
2      99322000         SCREW M8X75 UNI5931 12.9      8
1      47123041         PUMP MANIFOLD                 1




WS1625                                                            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 WS1625 R ATEX pump used for?

The Interpump WS1625 R ATEX is an industrial gear pump designed for high-pressure fluid transfer in hazardous environments. It delivers 25 L/min at 160 bar and is rated for 7.72 kW at 1450 rpm, making it suitable for applications requiring ATEX compliance in industries such as oil and gas, chemical processing, and marine.

What are the specifications of the Interpump WS1625 R ATEX pump?

The Interpump WS1625 R ATEX pump has a flow rate of 25 L/min (6.6 US GPM), a maximum pressure of 160 bar (16 MPa, 2320 psi), and a power rating of 7.72 kW (10.5 hp) at 1450 rpm. It weighs 15 kg and has overall dimensions of 327 mm x 236 mm x 180 mm. The pump features a male shaft key design and is ATEX-certified for hazardous locations.

Where to buy the Interpump WS1625 R ATEX in Singapore?

3G Electric sources and delivers the Interpump WS1625 R ATEX pump to Singapore. We handle logistics, customs clearance, and local delivery, ensuring compliance with Singapore's industrial safety standards. Contact our team for pricing and lead time on this ATEX-certified gear pump.

How to install the Interpump WS1625 R ATEX pump?

Install the Interpump WS1625 R ATEX pump on a rigid, level foundation to minimize vibration. Align the pump shaft with the motor using a flexible coupling, and ensure proper lubrication with the recommended oil grade. Verify all seals and connections are tight before starting the system at low pressure to check for leaks.

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 WS1625 parts list — 129 parts, 63 available in catalog

Official Parts List

WS1625 — Male shaft (key) exploded diagram

Repair Kits — Order These for Routine Maintenance

KIT2

KIT 2 OIL SEAL D. 22X32X5,5

34000201×1Available

Interpump PUMP WS1625 R ATEX

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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