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Interpump PUMP WK5021 SX - Pumps & Compressors
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InterpumpPumps & Compressors

Interpump PUMP WK5021 SX

The Interpump PUMP WK5021 SX is a 20.59 kW industrial pump delivering 21 L/min at 500 bar, designed for high-pressure applications across Southeast Asian manufacturing and processing sectors. Operating at 1450 rpm…

SKU 3G-ITP-01819

Also listed as: WK5021S000 · WK5021S 000

Brand
Interpump
Item
PUMP WK5021 SX
Category
Pumps & Compressors
UNSPSC
40151527 — Plunger pumps
Available to Order
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Direct from OEM
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Air & sea freight
Datasheet on Request
Technical specs
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Technical Specifications

Interpump
Flow Rate
21 L/min
Pressure
500 bar
Power
20.59 kW
Speed
1450 RPM
Weight
21.5 kg
Dimensions
350 mm
Power
28 HP
Flow (US)
5.55 GPM
Pressure
50 MPa
Pressure
7250 PSI
View Full Spec Sheet

Technical Documents

(1)
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Interpump Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Interpump PUMP WK5021 SX is a 20.59 kW industrial pump delivering 21 L/min at 500 bar, designed for high-pressure applications across Southeast Asian manufacturing and processing sectors. Operating at 1450 rpm with a compact footprint (350 mm length), this unit combines proven Interpump engineering with the power density required for demanding industrial workflows. 3G Electric supplies the WK5021 SX as an authorised distributor with full DDP logistics support to Singapore and the region.

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 WK5021 parts list — 107 parts, 54 available in catalog

Official Parts List
Exploded Diagram — Male shaft (key)View full size
WK5021 — Male shaft (key)

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
KIT176
KIT176 COMPLETE SEALS D.18
34017601×1Available
View
KIT180
KIT 180 SEALS D. 18
34018001×1Available
View

Individual Components

PosCodeDescriptionQty
3
PLUG G1/8X8 S.S.
98197200×3Available
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
INTAKE/DELIVERY VALVE
36712101×6Available
View
13
O-RING 23,81X2,62 (132)
90385700×6Available
View
14
ANTI-EXTR.RING D.24.7x29x1.5
90516500×3Available
View
18
O-RING 17,86X2,62 (123)
90384300×3Available
View
19
ANTI-EXTRUSION RING
90511500×3Available
View
22
WASHER 21,5X27X1,5
96751400×1Available
View
23
PLUG G 1/2X10 NICKEL
98217900×1Available
View
24
PLUG G. 3/8X13 NICKEL
98209900×1Available
View
26
PISTON BOLT
66219566×3Available
View
28
PISTON D.18X54
66040309×3Available
View
29
PACKING 18.0x28x10.0 HP 66
90265500×3Available
View
30
INTERMEDIATE RING D. 18 WK5021
66216370×3Available
View
31
SEAL D.18X26X6,5 L.P.
90265200×3Available
View
32
O-RING 34,65X1,78 (2137)
90361600×3Available
View

Need multiple parts? Request a bundled quote

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

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Genuine manufacturer parts Expert technical support Worldwide shipping

Official WK5021 parts list — Industrial Pumps (Series 69)

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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