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Interpump PUMP W4018 L - Pumps & Compressors
InterpumpPumps & Compressors

Interpump PUMP W4018 L

The Interpump PUMP W4018 L is an industrial positive-displacement pump delivering 18 L/min at 400 bar, suitable for high-pressure hydraulic systems. Operating at 1450 rpm with 14.7 kW power input, it fits mobile and…

SKU 3G-ITP-01747

Also listed as: W04018S000 · W04018S 000

Brand
Interpump
Item
PUMP W4018 L
Category
Pumps & Compressors
UNSPSC
40151527 — Plunger pumps
Available to Order
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Technical specs
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Interpump
Flow Rate
18 L/min
Pressure
400 bar
Power
14.7 kW
Speed
1450 RPM
Weight
19.5 kg
Dimensions
351.5 mm
Power
20 HP
Flow (US)
4.75 GPM
Pressure
40 MPa
Pressure
5800 PSI

Datasheet Content

W914 TECHNICAL INFORMATION Flow (L/min) 21 Flow (US Gpm) 5,55 Rotation regime (rpm) 1750 Pressure (MPa) 10 Pressure (bar) 100 Pressure (psi) 1750 Power (hp) 5,5 Power (kW) 4,04 Overall dimensions L x l x h (mm) 327x236x180 Weight (kg) 14,5 W914 3/21/2026 Page 1 - 8 Copyright INTERPUMP GROUP S.P.A W914 Documents Male shaft (key) Male shaft (key) - vers. ATEX W914 3/21/2026 Page 2 - 8 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) W914 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 W914 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 47023035 CRANKSHAFT C.13 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 W914 3/21/2026 Page 5 - 8 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - vers. ATEX W914 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 W914 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 47023035 CRANKSHAFT C.13 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 W914 3/21/2026 Page 8 - 8 Copyright INTERPUMP GROUP S.P.A

Technical Documents

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Interpump Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Interpump PUMP W4018 L is an industrial positive-displacement pump delivering 18 L/min at 400 bar, suitable for high-pressure hydraulic systems. Operating at 1450 rpm with 14.7 kW power input, it fits mobile and stationary applications requiring compact, reliable pressure generation.

Frequently Asked Questions

Where can I source the Interpump W4018 L pump worldwide?

3G Electric is an authorised distributor of Interpump pumps including the W4018 L model. We handle logistics, customs clearance, and delivery worldwide. Contact us for availability and lead time on request.

What are the pressure and flow specifications of the W4018 L?

The Interpump W4018 L delivers 18 L/min (4.75 US gpm) at a maximum working pressure of 400 bar (40 MPa / 5,800 psi). Operating speed is 1,450 rpm with 14.7 kW power input, making it suitable for compact high-pressure hydraulic systems.

Is the W4018 L suitable for mobile applications?

Yes. The W4018 L is a compact positive-displacement pump designed for both mobile and stationary hydraulic systems. At 19.5 kg and 351.5 mm length, it delivers reliable pressure generation in space-constrained installations requiring 400 bar operation.

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 W4018 parts list137 parts, 47 available in catalog

Official Parts List
W4018 — Male shaft (key) exploded diagram

Repair Kits — Order These for Routine Maintenance

KIT2
KIT 2 OIL SEAL D. 22X32X5,5
34000201×1Available
View
KIT3
KIT 3 OIL SEAL D.30X55X7
34000301×1Available
View
KIT150
KIT 150 INTAKE/DEL.VALVE
34015001×1Available
View

Individual Components

PosCodeDescriptionQty
6
INTAKE/DELIVERY VALVE
36712101×6Available
View
7
O-RING 17,12X2,62 (3068)
90384100×6Available
View
8
VALVE SEAT
36200366×6Available
View
9
SPHERICAL VALVE
36203266×6Available
View
10
SPRING D. 9,4X14,8
94737600×6Available
View
11
VALVE CAGE
36202551×6Available
View
12
ANTI-EXTRUSION RING
90511500×3Available
View
13
O-RING 17,86X2,62 (123)
90384300×3Available
View
15
O-RING 23,81X2,62 (132)
90385700×6Available
View
17
ANTI-EXTR.RING D.24.7x29x1.5
90516500×3Available
View
19
SCREW M 8x16 UNI 5931
99303900×8Available
View
20
View
21
O-RING 67,95X2,62 (3268)
90391300×2Available
View
22
O-RING 39,34X2,62 (3156)
90387700×1Available
View
23
OIL SIGHT GLASS
70211801×1Available
View
24
CIRCLIP D.45 (ZJ45)
90075600×1Available
View
25
ROLLER BEARING NJ2206EC
91838000×2Available
View
26
CRANKCASE
66010022×1Available
View
27
OIL DIP-STICK G3/8X80 W4018
98210600×1Available
View
28
CRANKSHAFT C.21 - D. 24
66020435×1Available
View

Need multiple parts? Request a bundled quote

47 parts available in our catalog — get a single quote with volume pricing

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Official W4018 parts listIndustrial Pumps (66 Series)

Interpump Products

3G Electric supplies Interpump pumps & compressors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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