InterpumpPumps & Compressors

Interpump PUMP VHT4721 DX ATEX

Interpump VHT4721 DX ATEX is an industrial pump delivering 21 L/min at 140 bar, rated 5.51 kW, operating at 1450 rpm. ATEX-certified for hazardous-area applications requiring explosion-proof equipment in demanding…

SKU 3G-ITP-01231

Also listed as: VHT4721EX000 · VHT4721EX 000

Brand

Interpump

Item

PUMP VHT4721 DX 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

21 L/min

Pressure

140 bar

Power

5.51 kW

Speed

1450 RPM

Weight

14.5 kg

Dimensions

315.5 mm

Power

7.5 HP

Flow (US)

0.246527777777778 GPM

Pressure

14 MPa

Pressure

2030 PSI

Datasheet Content

VHT6646




TECHNICAL INFORMATION
Flow (L/min)                        46 / 38
Flow (US Gpm)                       12,15 / 10,04
Rotation regime (rpm)               1750 / 1450
Pressure (MPa)                      17 / 20
Pressure (bar)                      170 / 200
Pressure (psi)                      2465 / 2900
Power (hp)                          20 / 19,74
Power (kW)                          14,70 / 14,51
Overall dimensions L x l x h (mm)   340,5x242,5x177,5
Weight (kg)                         18,5




VHT6646                                                 3/21/2026   Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
VHT6646

     Documents

Male shaft (key)

Male shaft (key) - vers. ATEX




VHT6646                           3/21/2026   Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)




VHT6646                           3/21/2026   Page 3 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.     Code           Description                   Qty Notes
KIT3     34000301       KIT 3 OIL SEAL D.30X55X7      1
KIT2     34000201       KIT 2 OIL SEAL D. 22X32X5,5   1

KIT378   34037801                                     1
KIT375   34037501                                     1
KIT210   34021001                                     1
52       98209900       PLUG G. 3/8X13 NICKEL         1
51       96738000       WASHER 17,5X23X1,5            1
50       90162500       OIL SEAL 22x32x5              3
49       90912600       BUSHING 22X25X30              3
48       99364400       SCREW M 10x18-5931            4
47       96710600       WASHER 10,2                   4
46       47200074       PUMP FOOT                     2
45       90236000                                     3
44       66216470       INTERMEDIATE RING D. 24       3
43       90235000                                     3
42       90361650       O-RING D. 34.65x1.78 HNBR     3
                        70SH 2137
41       66081470                                     3
40       90358500       O-RING 10,82X1,78 (2043)      1
39       98204700                                     3
38       90164800       OIL SEAL 30x55x7              1
37       47151022       OPEN SIDE COVER (47-66)       1
36       66219566       PISTON BOLT                   3
35       90358450                                     3
34       66040409       PISTON D. 24X54               3
33       96710100       WASHER D. 10X28X0.5           3
32       66050066       PISTON GUIDE - S.S.           3
31       97740500       CONNECTING ROD-PIN D.14X39 3


30       99309900       SCREW M 8x35 UNI 5931         6
29       90358550       O-RING D.10.82x1.78 HNBR      3
                        70SH 2043
28       98204250       PLUG G1/4"x12                 1
27       96770000       WASHER 26,5X32X1,5            1
26       98226900                                     1
25       99188400       SCREW M 6x20 UNI 5931         4
24       66160022       REAR COVER                    1
23       90392200       O-RING D.133.02X 2,62(3525)   1


22       66030001       CONNECTING ROD                3
21       91489200       KEY 8(h9)X7X35 UNI 6604/A     1




VHT6646                                                           3/21/2026   Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.   Code             Description                 Qty Notes

20     66020435         CRANKSHAFT C.21 - D. 24     1
19     98210600         OIL DIP-STICK G3/8X80       1
18     66010022         CRANKCASE                   1
17     91838000         ROLLER BEARING NJ2206EC     2
16     90075600         CIRCLIP D.45 (ZJ45)         1
15     70211801         OIL SIGHT GLASS             1
14     90387700         O-RING 39,34X2,62 (3156)    1
13     90391300         O-RING 67,95X2,62 (3268)    2
12     47151222         SIDE CRANKCASE COVER FOR    1
                        OIL GAUGE
11     99303900         SCREW M 8x16 UNI 5931       8
10     36726301                                     6
9      66130341                                     6
8      90516500         ANTI-EXTR.RING D.24.7x29x1.5 6


7      36203551         VALVE CAGE                  6
6      94738800         SPRING Dm. 10x18.5          6
5      36203476         SPHERICAL VALVE             6
4      36203366         VALVE SEAT                  6
3      90385750                                     12
2      99380100         SCREW M10X90 UNI 5931 8.8   8


1      66120841                                     1




VHT6646                                                         3/21/2026   Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX




VHT6646                                      3/21/2026   Page 6 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX

Pos.     Code           Description                   Qty Notes
KIT3     34000301       KIT 3 OIL SEAL D.30X55X7      1
KIT2     34000201       KIT 2 OIL SEAL D. 22X32X5,5   1

KIT378   34037801                                     1
KIT375   34037501                                     1
KIT210   34021001                                     1
54       96693950       WASHER 6.4x11.0x0.7 D6798A    1
                        INOX
53       99180900       SCREW M06X10 5931 A2-70       1
52       98209900       PLUG G. 3/8X13 NICKEL         1
51       96738000       WASHER 17,5X23X1,5            1
50       90162500       OIL SEAL 22x32x5              3
49       90912600       BUSHING 22X25X30              3
48       99364400       SCREW M 10x18-5931            4
47       96710600       WASHER 10,2                   4
46       47200074       PUMP FOOT                     2
45       90236000                                     3
44       66216470       INTERMEDIATE RING D. 24       3
43       90235000                                     3
42       90361650       O-RING D. 34.65x1.78 HNBR     3
                        70SH 2137
41       66081470                                     3
40       90358500       O-RING 10,82X1,78 (2043)      1
39       98204700                                     3
38       90164800       OIL SEAL 30x55x7              1
37       47151022       OPEN SIDE COVER (47-66)       1
36       66219566       PISTON BOLT                   3
35       90358450                                     3
34       66040409       PISTON D. 24X54               3
33       96710100       WASHER D. 10X28X0.5           3
32       66050066       PISTON GUIDE - S.S.           3
31       97740500       CONNECTING ROD-PIN D.14X39 3

30       99309900       SCREW M 8x35 UNI 5931         6
29       90358550       O-RING D.10.82x1.78 HNBR      3
                        70SH 2043
28       98203600       PLUG G1/4x8 FOR PROBE D.6     1
                        S.S.
27       96770000       WASHER 26,5X32X1,5            1
26       98226900                                     1
25       99188400       SCREW M 6x20 UNI 5931         4
24       66160022       REAR COVER                    1
23       90392200       O-RING D.133.02X 2,62(3525)   1




VHT6646                                                           3/21/2026   Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX

Pos.   Code             Description                 Qty Notes

22     66030001         CONNECTING ROD              3
21     91489200         KEY 8(h9)X7X35 UNI 6604/A   1


20     66020435         CRANKSHAFT C.21 - D. 24     1
19     98210700         OIL DIPSTICK G3/8X64        1
                        D4+FILTER ATEX
18     66010022         CRANKCASE                   1
17     91838000         ROLLER BEARING NJ2206EC     2
16     90075500         STOP RING J45 UNI7437       1
15     70211751                                     1
14     90387700         O-RING 39,34X2,62 (3156)    1
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     36726301                                     6
9      66130341                                     6
8      90516500         ANTI-EXTR.RING D.24.7x29x1.5 6


7      36203551         VALVE CAGE                  6
6      94738800         SPRING Dm. 10x18.5          6
5      36203476         SPHERICAL VALVE             6
4      36203366         VALVE SEAT                  6
3      90385750                                     12
2      99380100         SCREW M10X90 UNI 5931 8.8   8


1      66120841                                     1




VHT6646                                                         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

Frequently Asked Questions

What is the Interpump VHT4721 DX ATEX pump used for?

The Interpump VHT4721 DX ATEX is an industrial pump designed for hazardous-area applications requiring explosion-proof equipment. It delivers 21 L/min at 140 bar and is rated 5.51 kW at 1450 rpm, making it suitable for demanding environments in oil and gas, chemical processing, and other industries where ATEX certification is mandatory.

What are the specifications of the Interpump VHT4721 DX ATEX pump?

The Interpump VHT4721 DX ATEX pump delivers 21 L/min at 140 bar, with a power rating of 5.51 kW (7.5 hp) and a rotation regime of 1450 rpm. It weighs 14.5 kg and has overall dimensions of 315.5 mm (L x l x h). The pump is ATEX-certified for use in explosive atmospheres.

Where to buy the Interpump VHT4721 DX ATEX pump in Singapore?

3G Electric sources and delivers the Interpump VHT4721 DX ATEX pump to Singapore. We handle logistics, customs clearance, and local technical support for industrial buyers. Contact us for pricing and lead time on this ATEX-certified pump for hazardous-area applications.

How to maintain the Interpump VHT4721 DX ATEX pump?

Regular maintenance of the Interpump VHT4721 DX ATEX pump includes checking oil seals (e.g., KIT3 oil seal D.30X55X7 and KIT2 oil seal D.22X32X5.5), inspecting O-rings, and ensuring proper lubrication. Always follow Interpump's guidelines for servicing ATEX-certified equipment to maintain explosion-proof integrity.

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 VHT4721 parts list — 125 parts, 62 available in catalog

Official Parts List

VHT4721 — Male shaft (key) exploded diagram

Repair Kits — Order These for Routine Maintenance

KIT2

KIT 2 OIL SEAL D. 22X32X5,5

34000201×1Available

Interpump PUMP VHT4721 DX 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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