Interpump PUMP W4021 DX

W921 TECHNICAL INFORMATION Flow (L/min) 15 Flow (US Gpm) 3,96 Rotation regime (rpm) 1750 Pressure (MPa) 20 Pressure (bar) 200 Pressure (psi) 2900 Power (hp) 7,5 Power (kW) 5,51 Overall dimensions L x l x h (mm) 327x236x180 Weight (kg) 14,5 W921 3/21/2026 Page 1 - 9 Copyright INTERPUMP GROUP S.P.A W921 Documents Male shaft (key) Male shaft (key) - vers. ATEX W921 3/21/2026 Page 2 - 9 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) W921 3/21/2026 Page 3 - 9 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 KIT5 34000501 KIT 5 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 W921 3/21/2026 Page 4 - 9 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 47021935 CRANKSHAFT C. 10 S.p.F. U.S. 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 98222200 VALVE PLUG M24X2X16 NICKEL 6 PL. 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 47120241 MANIFOLD 1 W921 3/21/2026 Page 5 - 9 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - vers. ATEX W921 3/21/2026 Page 6 - 9 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 KIT5 34000501 KIT 5 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 W921 3/21/2026 Page 7 - 9 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 47021935 CRANKSHAFT C. 10 S.p.F. U.S. 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 98222200 VALVE PLUG M24X2X16 NICKEL 6 PL. 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 W921 3/21/2026 Page 8 - 9 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - vers. ATEX Pos. Code Description Qty Notes 1 47120241 MANIFOLD 1 W921 3/21/2026 Page 9 - 9 Copyright INTERPUMP GROUP S.P.A