InterpumpPumps & Compressors

Interpump PUMP E3C2521 DX + GEARBOX RS500

Interpump PUMP E3C2521 DX with RS500 gearbox delivers high-pressure hydraulic pumping for industrial systems, rated 10 kW at 1750 rpm and 250 bar with 21 l/min flow capacity. Compact 265 mm footprint suits…

SKU 3G-ITP-00714

Also listed as: E3C2521R001 · E3C2521 R001

Brand

Interpump

Item

PUMP E3C2521 DX + 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

21 L/min

Pressure

250 bar

Power

10 kW

Speed

1750 RPM

Weight

9.5 kg

Dimensions

265 mm

Power

13.6 HP

Flow (US)

5.55 GPM

Pressure

25 MPa

Pressure

3625 PSI

Datasheet Content

E3C2521




TECHNICAL INFORMATION
Flow (L/min)                        21
Flow (US Gpm)                       5,55
Rotation regime (rpm)               1750
Pressure (MPa)                      25
Pressure (bar)                      250
Pressure (psi)                      3625
Power (hp)                          13,6
Power (kW)                          10
Overall dimensions L x l x h (mm)   265x223x140
Weight (kg)                         9,5




E3C2521                                           3/21/2026   Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
E3C2521

     Documents

Male shaft (key)

Pump head with VH integrated valve




E3C2521                              3/21/2026   Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)




E3C2521                           3/21/2026   Page 3 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.     Code           Description                   Qty Notes
KIT292   34029201       KIT 292 VALVE PLUGS (NICK.)59 1
                        S.
KIT290   34029001       KIT 290 CPL.SEAL D.20 59 SER. 1

KIT285   34028501       KIT 285 PACKING D.20 59       1
                        SERIES
KIT271   34027101       KIT 271 OIL SEAL D.15         1
                        58/59 SERIES

KIT269   34026901       KIT 269 INTAKE/DELIVERY       1
                        VALVES
63       50200074       PUMP FOOT                     2
62       96701600       WASHER 8,4                    4
61       99303700       SCREW M 8x16-5739             4
60       91489200       KEY 8(h9)X7X35 UNI 6604/A     1


59       90164800       OIL SEAL 30x55x7              1
58       47151022       OPEN SIDE COVER (47-66)       1
57       90358500       O-RING 10,82X1,78 (2043)      1
56       98204250       PLUG G1/4"x12                 1
55       59160022       REAR CRANKCASE COVER          1
54       90392200       O-RING D.133.02X 2,62(3525)   1


53       98211300       ASTA LIVELLO OLIO G3/8x54 D.4 1


52       97567800       SHIM D.74,5X104X0,1           1
52       97568000       SHIM D.74.5X104X0.3           1
51       90391300       O-RING 67,95X2,62 (3268)      2
50       91837500       TAPER BEARING                 2
49       99303900       SCREW M 8x16 UNI 5931         12
48       90075600       CIRCLIP D.45 (ZJ45)           1
47       59020135       CRANKSHAFT C. 13              1
46       70211801       OIL SIGHT GLASS               1
45       90387700       O-RING 39,34X2,62 (3156)      1
44       47151222       SIDE CRANKCASE COVER FOR      1
                        OIL GAUGE
43       99309900       SCREW M 8x35 UNI 5931         6
42       59030001       CONNECTING ROD COMPLETE       3
41       97739900       GUDGEON PIN D.14X34           3
40       59050066       PISTON GUIDE                  3
39       90156550       OIL SEAL D.15X24X5/7          3
38       58210451       PROTECTION                    1
37       59010022       PUMP CRANKCASE                1
36       59211082       SPONGE GASKET D.3X103         1
35       96699000       WASHER D.7.5X23X0.5           3




E3C2521                                                           3/21/2026   Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)

Pos.   Code             Description                   Qty Notes

34     96751400         WASHER 21,5X27X1,5            1
33     98217900         PLUG G 1/2X10 NICKEL          1
32     96738000         WASHER 17,5X23X1,5            1
31     98209900         PLUG G. 3/8X13 NICKEL         1
30     59210870         RING FOR SEAL D.20            3
29     90269000         PACKING D.20X28X6.5 LP (66)   3


27     90361200         O-RING 31,47X1,78 (2125)      3
26     59606101         PACKING RETAINER+SLEEVE       3
                        D.20
25     90513400         ANTI-EXTRUSION RING           3
                        D.20X30X2
24     90269100         PACKING D.20X30X6/3.7 H.P.    3
                        66 SERIES
23     66100751         HEAD RING D.20 H.P.           3
22     99317700         VITE M08x60 5931 12.9         8
                        G321A+M
21     98213750         PLUG M18X1,5X10 D.23 (NICK.) 3


20     90359300         O-RING 15,60X1,78 (2062)      3
19     98196700         PLUG G 1/8 X 8 NICKEL         1
18     36719301         OUTLET VALVE                  3
17     36211151         VALVE CAGE                    3
16     94733300         SPRING D.6.2x10.5 S.S.        3
15     36211276         SPHERICAL VALVE               3
14     36211366         VALVE SEAT                    3
13     90367400         O-RING D. 12X2 (120-20)       3
12     59040009         PISTON D. 20X42               3
11     96690500         WASHER D.5X11.5x0.4           3
                        INOX+FKM58/59/63HT
10     99169000         SCREW M05X55 SPEC. A2-70      3
9      98222500         VALVE CAP M24X1,5X17 NICKEL 3


8      90384700         O-RING 20,29X2,62(3081)       3
7      36711501         INTAKE/DELIVERY VALVE         3
6      90384100         O-RING 17,12X2,62 (3068)      3
5      36200366         VALVE SEAT                    3
4      36200176         VALVE PLATE                   3
3      94737600         SPRING D. 9,4X14,8            3
2      36202551         VALVE CAGE                    3
1      59121341         MANIFOLD D.22*NICKEL PL.      1




E3C2521                                                           3/21/2026   Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Pump head with VH integrated valve




E3C2521                                           3/21/2026   Page 6 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Pump head with VH integrated valve

Pos.     Code           Description                  Qty Notes
KIT280   34028001       KIT 280 FIXED CHEM.INJECTOR 1
                        58-59
KIT279   34027901       KIT 279 ADJUSTABLE CHEM. INJ. 1
                        58-59
KIT278   34027801       KIT 278 BUILT-IN VALVE 58-59 1


47       36605401       H REG.VALVE ASSY.            1
46       59121841       MANIFOLD D.20                1
                        W/VALVE*NICKEL P
45       36349270       CHEM. HOSE BARB FITTING      1
44       36348451       DETERGENT KNOB               1
43       97661500       ELASTIC PIN D. 2X12          1
42       36334270       SHUTTER WITH HOSE FITTING    1


41       94733400       SPRING D.6.4X12.5            1
40       36348270       CHEM. HOSE BARB FITTING      1
39       90357300       O-RING D. 5,28X1,78 (2021)   2


38       97478200       BALL 7/32(5,556) STAINLESS   1


37       94821700       TAPER SPRING D.4,3X7,3X11    1


36       10079866       INJECTOR NOZZLE D.2.20       1
                        ORANGE
36       10079566       NOZZLE D. 2.00               1
35       92982800       WING NUT G3/4                1
34       36256951       INLET HOSE BARB FITTING (PL.) 1


33       90382800       O-RING 12,37X2,62 (3050)     1
32       92892500       FILTER D. 12X35              1
31       36318251       INLET NIPPLE G 3/4           1
30       90384100       O-RING 17,12X2,62 (3068)     1
29       98204200       PLUG G1/4X9 NICKEL           1
28       90358500       O-RING 10,82X1,78 (2043)     1
27       36348870       NIPPLE D.3 M22X1.5 M         1
27       36348970       NIPPLE D.3 G3/8F             1
27       36347970       NIPPLE D.3 G3/8M             1
27       36348770       NIPPLE D.3 3/8NPT M          1
27       36349070       NIPPLE D.3 3/8NPT F          1
26       90383900       O-RING 15,88X2,62 (121)      1
25       36310451       VALVE GUIDE                  1
24       94735500       SPRING D. 8,5X12             1
23       97483800       BALL 13/32 (10,319)          1
22       90382300       O-RING 9,92X2,62 (112)       1
21       36348366       REG. VALVE SEAT              1




E3C2521                                                          3/21/2026   Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Pump head with VH integrated valve

Pos.   Code             Description                  Qty Notes

20     90357800         O-RING 7,66X1,78 (2031)      1
19     90503800         ANTI-EXTR.RING D.9X12X1.5    1


18     90358100         O-RING 8,73X1,78 - (108)     1
17     90358700         O-RING D. 11,11X1,78 (114)   1


15     36347770         MAX.PRESSURE NUT             1
14     99126700         SCREW M4X5 UNI5929 S.S.      1
6      94739500         SPRING D.11,3x34,5           1
5      36348651         SLIDE WASHER                 2
4      36348170         PRESSURE ADJUST SCREW        1
3      90384500         O-RING 18,72X2,6 (3075)      1
2      10084666         REGULATION KNOB YOKE         1
1      36350651         REGULATION KNOB - RED S.     1
                        53-58-59




E3C2521                                                          3/21/2026   Page 8 - 8
Copyright INTERPUMP GROUP S.P.A

Technical Documents

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Technical Data Sheet

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Interpump Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the Interpump E3C2521 DX with RS500 gearbox used for?

The Interpump E3C2521 DX with RS500 gearbox is a high-pressure hydraulic pump rated at 250 bar and 21 l/min, used in industrial systems such as pressure washing, water jetting, and process fluid transfer. Its compact 265 mm footprint suits space-constrained installations requiring reliable, consistent performance.

What are the specifications of the Interpump E3C2521 DX pump?

The Interpump E3C2521 DX pump delivers 21 l/min flow at 250 bar (25 MPa, 3625 psi), driven by 10 kW (13.6 hp) at 1750 rpm. It weighs 9.5 kg with overall dimensions of 265 mm x 223 mm x 140 mm. The pump features a male shaft with key and a pump head with integrated VH valve.

Where to buy the Interpump E3C2521 DX pump in Singapore?

3G Electric, an established industrial equipment distributor since 1990, sources and delivers the Interpump E3C2521 DX pump to Singapore. We handle logistics, customs clearance, and local technical support, ensuring you receive the genuine Interpump product for your industrial applications.

How to install the Interpump E3C2521 DX pump with RS500 gearbox?

Install the Interpump E3C2521 DX pump on a rigid, level base, aligning the RS500 gearbox shaft with the pump keyed shaft. Use the provided mounting foot and M8 screws. Ensure proper oil level via the sight glass and check all seals and O-rings before operation. Consult the Interpump manual for torque specs.

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

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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