Datasheet Content
W928
TECHNICAL INFORMATION
Flow (L/min) 15
Flow (US Gpm) 3,96
Rotation regime (rpm) 1750
Pressure (MPa) 27,5
Pressure (bar) 275
Pressure (psi) 4000
Power (hp) 11
Power (kW) 8,08
Overall dimensions L x l x h (mm) 327x236x180
Weight (kg) 14,5
W928 3/21/2026 Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
W928
Documents
Male shaft (key)
Male shaft (key) - vers. ATEX
W928 3/21/2026 Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)
W928 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
KIT112 34011201 KIT 112 COMPL.SEAL PISTON 1
D.16
KIT111 34011101 KIT 111 PACKING RETAINER D. 1
16
KIT110 34011001 KIT 110 INTERM. RING D. 16 1
KIT109 34010901 KIT 109 PACKING D.16 + 1
RESTOP
KIT108 34010801 KIT 108 HEAD RING D. 16 1
KIT107 34010701 KIT 107 PISTON BOLT 1
KIT106 34010601 KIT 106 INTAKE/DEL. VALVE 1
CAPS
KIT1 34000101 KIT 1 INTAKE/DELIVERY VALVE 1
55 90264200 PACKING D. 16X30 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 90264300 RESTOP RING D. 16 3
46 47217270 INTERMEDIATE RING D. 16 3
45 47100351 HEAD RING D. 16 3
44 90264400 LOW PRESSURE PACKING 3
16X30X8.5
43 47080870 PACKING RETAINER D. 16 3
42 90361600 O-RING 34,65X1,78 (2137) 3
41 90164800 OIL SEAL 30x55x7 1
40 97567800 SHIM D.74,5X104X0,1 1
40 97568000 SHIM D.74.5X104X0.3 1
39 47151022 OPEN SIDE COVER (47-66) 1
38 47219666 PISTON BOLT D. 16 3
37 90357700 O-RING 7,66X1,78 SPEC. (2031) 3
36 90503300 ANTI-EXTRUSION RING 3
35 47040856 PISTON D. 16X49 3
34 47211747 PROTECTION RING 3
32 99309900 SCREW M 8x35 UNI 5931 6
31 90358500 O-RING 10,82X1,78 (2043) 1
30 98204250 PLUG G1/4"x12 1
W928 3/21/2026 Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)
Pos. Code Description Qty Notes
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 47050666 PISTON GUIDE - S.S.(928-9281) 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 47021735 CRANKSHAFT C.16 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 98222400 PLUG M 24X1,5X7,5 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 47121441 PUMP HEAD 1
W928 3/21/2026 Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX
W928 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
KIT112 34011201 KIT 112 COMPL.SEAL PISTON 1
D.16
KIT111 34011101 KIT 111 PACKING RETAINER D. 1
16
KIT110 34011001 KIT 110 INTERM. RING D. 16 1
KIT109 34010901 KIT 109 PACKING D.16 + 1
RESTOP
KIT108 34010801 KIT 108 HEAD RING D. 16 1
KIT107 34010701 KIT 107 PISTON BOLT 1
KIT106 34010601 KIT 106 INTAKE/DEL. VALVE 1
CAPS
KIT1 34000101 KIT 1 INTAKE/DELIVERY VALVE 1
60 99180900 SCREW M06X10 5931 A2-70 1
59 96693950 WASHER 6.4x11.0x0.7 D6798A 1
INOX
58 90387700 O-RING 39,34X2,62 (3156) 1
57 70211751 1
56 90075500 STOP RING J45 UNI7437 1
55 90264200 PACKING D. 16X30 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 90264300 RESTOP RING D. 16 3
46 47217270 INTERMEDIATE RING D. 16 3
45 47100351 HEAD RING D. 16 3
44 90264400 LOW PRESSURE PACKING 3
16X30X8.5
43 47080870 PACKING RETAINER D. 16 3
42 90361600 O-RING 34,65X1,78 (2137) 3
41 90164800 OIL SEAL 30x55x7 1
40 97567800 SHIM D.74,5X104X0,1 1
40 97568000 SHIM D.74.5X104X0.3 1
39 47151022 OPEN SIDE COVER (47-66) 1
38 47219666 PISTON BOLT D. 16 3
37 90357700 O-RING 7,66X1,78 SPEC. (2031) 3
W928 3/21/2026 Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX
Pos. Code Description Qty Notes
36 90503300 ANTI-EXTRUSION RING 3
35 47040856 PISTON D. 16X49 3
34 47211747 PROTECTION RING 3
32 99309900 SCREW M 8x35 UNI 5931 6
31 90358500 O-RING 10,82X1,78 (2043) 1
30 98203600 PLUG G1/4x8 FOR PROBE D.6 1
S.S.
29 98226600 PLUG G3/4X16 S.S. 1
28 47160622 CRANKCASE COVER 1
27 99188400 SCREW M 6x20 UNI 5931 5
26 47030001 CONNECTING ROD 3
25 47050666 PISTON GUIDE - S.S.(928-9281) 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 47021735 CRANKSHAFT C.16 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 98222400 PLUG M 24X1,5X7,5 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 47121441 PUMP HEAD 1
W928 3/21/2026 Page 8 - 8
Copyright INTERPUMP GROUP S.P.A
