Datasheet Content
W1550
TECHNICAL INFORMATION
Flow (L/min) 50
Flow (US Gpm) 13,20
Rotation regime (rpm) 1450
Pressure (MPa) 15
Pressure (bar) 150
Pressure (psi) 2175
Power (hp) 20
Power (kW) 14,70
Overall dimensions L x l x h (mm) 340,5x242,5x189,5
Weight (kg) 18,5
W1550 3/21/2026 Page 1 - 17
Copyright INTERPUMP GROUP S.P.A
W1550
Documents
Male shaft (key)
Double male shaft (key)
Male shaft (key) - vers. ATEX
Hollow shaft (key - 5/8") - predisposition for Hy-Pack
Hy-Pack version - GAS + gear motor 26cc
W1550 3/21/2026 Page 2 - 17
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)
W1550 3/21/2026 Page 3 - 17
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
KIT248 34024801 KIT 248 PACKING D.28 1
KIT247 34024701 KIT 247 CPL. SEAL D.28 1
KIT169 34016901 KIT 169 INTAKE/DEL.VALVE (66) 1
51 98204300 PLUG G1/4X10 3
50 98226800 PLUG G3/4X16 1
49 96770000 WASHER 26,5X32X1,5 1
48 96738000 WASHER 17,5X23X1,5 1
47 90162500 OIL SEAL 22x32x5 3
46 90912600 BUSHING 22X25X30 3
45 99364400 SCREW M 10x18-5931 4
44 96710600 WASHER 10,2 4
43 47200074 PUMP FOOT 2
42 90275400 PACKING D.28X38X10 H.P. 3
41 66220070 INTERMEDIATE RING D.28 3
40 90275300 PACKING D.28X36X6.5 L.P. 3
39 90362000 O-RING D.37.82X1.78 (2150) 3
38 66082570 PACKING RETAINER D.28 3
37 98210000 PLUG G3/8X13 1
36 90164800 OIL SEAL 30x55x7 1
35 47151022 OPEN SIDE COVER (47-66) 1
34 66219566 PISTON BOLT 3
33 90358400 O-RING D.10,82X1,78(2043)90SH 3
32 66041009 PISTON D.28X54 3
31 96710100 WASHER D. 10X28X0.5 3
30 66050066 PISTON GUIDE - S.S. 3
29 97740500 CONNECTING ROD-PIN D.14X39 3
28 99309900 SCREW M 8x35 UNI 5931 6
27 90358500 O-RING 10,82X1,78 (2043) 4
26 98204250 PLUG G1/4"x12 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
20 66020035 CRANKSHAFT C.19 - D. 24 1
W1550 3/21/2026 Page 4 - 17
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)
Pos. Code Description Qty Notes
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 36712701 INTAKE/DEL.VALVE ASSY(66) 6
9 66130041 VALVE CAP M32x1.5x29.5 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 90385700 O-RING 23,81X2,62 (132) 12
2 99380100 SCREW M10X90 UNI 5931 8.8 8
1 66124641 MANIFOLD FOR PISTON D.28 1
W1550 3/21/2026 Page 5 - 17
Copyright INTERPUMP GROUP S.P.A
Illustration Double male shaft (key)
W1550 3/21/2026 Page 6 - 17
Copyright INTERPUMP GROUP S.P.A
Illustration Double 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
KIT248 34024801 KIT 248 PACKING D.28 1
KIT247 34024701 KIT 247 CPL. SEAL D.28 1
KIT169 34016901 KIT 169 INTAKE/DEL.VALVE (66) 1
51 98204300 PLUG G1/4X10 3
50 98226800 PLUG G3/4X16 1
49 96770000 WASHER 26,5X32X1,5 1
48 96738000 WASHER 17,5X23X1,5 1
47 90162500 OIL SEAL 22x32x5 3
46 90912600 BUSHING 22X25X30 3
45 99364400 SCREW M 10x18-5931 4
44 96710600 WASHER 10,2 4
43 47200074 PUMP FOOT 2
42 90275400 PACKING D.28X38X10 H.P. 3
41 66220070 INTERMEDIATE RING D.28 3
40 90275300 PACKING D.28X36X6.5 L.P. 3
39 90362000 O-RING D.37.82X1.78 (2150) 3
38 66082570 PACKING RETAINER D.28 3
37 98210000 PLUG G3/8X13 1
36 90164800 OIL SEAL 30x55x7 2
35 47151022 OPEN SIDE COVER (47-66) 2
34 66219566 PISTON BOLT 3
33 90358400 O-RING D.10,82X1,78(2043)90SH 3
32 66041009 PISTON D.28X54 3
31 96710100 WASHER D. 10X28X0.5 3
30 66050066 PISTON GUIDE - S.S. 3
29 97740500 CONNECTING ROD-PIN D.14X39 3
28 99309900 SCREW M 8x35 UNI 5931 6
27 90358500 O-RING 10,82X1,78 (2043) 4
26 98204250 PLUG G1/4"x12 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 2
20 66021035 CRANKSHAFT C.19 - DUAL PTO 1
W1550 3/21/2026 Page 7 - 17
Copyright INTERPUMP GROUP S.P.A
Illustration Double male shaft (key)
Pos. Code Description Qty Notes
19 98210600 OIL DIP-STICK G3/8X80 1
18 66010022 CRANKCASE 1
17 91838000 ROLLER BEARING NJ2206EC 2
13 90391300 O-RING 67,95X2,62 (3268) 2
11 99303900 SCREW M 8x16 UNI 5931 8
10 36712701 INTAKE/DEL.VALVE ASSY(66) 6
9 66130041 VALVE CAP M32x1.5x29.5 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 90385700 O-RING 23,81X2,62 (132) 12
2 99380100 SCREW M10X90 UNI 5931 8.8 8
1 66124641 MANIFOLD FOR PISTON D.28 1
W1550 3/21/2026 Page 8 - 17
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX
W1550 3/21/2026 Page 9 - 17
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
KIT248 34024801 KIT 248 PACKING D.28 1
KIT247 34024701 KIT 247 CPL. SEAL D.28 1
KIT169 34016901 KIT 169 INTAKE/DEL.VALVE (66) 1
53 99180900 SCREW M06X10 5931 A2-70 1
52 96693950 WASHER 6.4x11.0x0.7 D6798A 1
INOX
51 98204300 PLUG G1/4X10 3
50 98226800 PLUG G3/4X16 1
49 96770000 WASHER 26,5X32X1,5 1
48 96738000 WASHER 17,5X23X1,5 1
47 90162500 OIL SEAL 22x32x5 3
46 90912600 BUSHING 22X25X30 3
45 99364400 SCREW M 10x18-5931 4
44 96710600 WASHER 10,2 4
43 47200074 PUMP FOOT 2
42 90275400 PACKING D.28X38X10 H.P. 3
41 66220070 INTERMEDIATE RING D.28 3
40 90275300 PACKING D.28X36X6.5 L.P. 3
39 90362000 O-RING D.37.82X1.78 (2150) 3
38 66082570 PACKING RETAINER D.28 3
37 98210000 PLUG G3/8X13 1
36 90164800 OIL SEAL 30x55x7 1
35 47151322 SIDE CRANKCASE COVER (ATEX) 1
35 47151022 OPEN SIDE COVER (47-66) 1
34 66219566 PISTON BOLT 3
33 90358400 O-RING D.10,82X1,78(2043)90SH 3
32 66041009 PISTON D.28X54 3
31 96710100 WASHER D. 10X28X0.5 3
30 66050066 PISTON GUIDE - S.S. 3
29 97740500 CONNECTING ROD-PIN D.14X39 3
28 99309900 SCREW M 8x35 UNI 5931 6
27 90358500 O-RING 10,82X1,78 (2043) 4
26 98203600 PLUG G1/4x8 FOR PROBE D.6 1
S.S.
25 99188400 SCREW M 6x20 UNI 5931 4
24 66160022 REAR COVER 1
W1550 3/21/2026 Page 10 - 17
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX
Pos. Code Description Qty Notes
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
20 66020035 CRANKSHAFT C.19 - 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
11 99303900 SCREW M 8x16 UNI 5931 8
10 36712701 INTAKE/DEL.VALVE ASSY(66) 6
9 66130041 VALVE CAP M32x1.5x29.5 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 90385700 O-RING 23,81X2,62 (132) 12
2 99380100 SCREW M10X90 UNI 5931 8.8 8
1 66124641 MANIFOLD FOR PISTON D.28 1
W1550…
