Datasheet Content
W4518
TECHNICAL INFORMATION
Flow (L/min) 18
Flow (US Gpm) 4,75
Rotation regime (rpm) 1450
Pressure (MPa) 45
Pressure (bar) 450
Pressure (psi) 6525
Power (hp) 21
Power (kW) 15,44
Overall dimensions L x l x h (mm) 351,5x242,5x195,5
Weight (kg) 19,5
W4518 3/21/2026 Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
W4518
Documents
Male shaft (key)
Male shaft (key) - vers. ATEX
W4518 3/21/2026 Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)
W4518 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
KIT175 34017501 1
KIT174 34017401 1
KIT150 34015001 KIT 150 INTAKE/DEL.VALVE 1
60 98204300 PLUG G1/4X10 1
59 93185800 1
58 90162500 OIL SEAL 22x32x5 3
57 90912600 BUSHING 22X25X30 3
56 99364400 SCREW M 10x18-5931 4
55 96710600 WASHER 10,2 4
54 47200074 PUMP FOOT 2
53 90263400 3
52 66216270 3
51 90263100 3
50 90361600 O-RING 34,65X1,78 (2137) 3
49 66080270 3
48 98210000 PLUG G3/8X13 1
46 90164800 OIL SEAL 30x55x7 1
45 47151022 OPEN SIDE COVER (47-66) 1
44 66219566 PISTON BOLT 3
43 90358400 O-RING D.10,82X1,78(2043)90SH 3
42 66040209 3
41 96710100 WASHER D. 10X28X0.5 3
40 66050066 PISTON GUIDE - S.S. 3
39 97740500 CONNECTING ROD-PIN D.14X39 3
38 99309900 SCREW M 8x35 UNI 5931 6
37 90358500 O-RING 10,82X1,78 (2043) 2
36 98204250 PLUG G1/4"x12 1
35 98217600 PLUG G1/2X10 1
34 96751400 WASHER 21,5X27X1,5 1
33 99188400 SCREW M 6x20 UNI 5931 4
32 66160022 REAR COVER 1
31 90392200 O-RING D.133.02X 2,62(3525) 1
30 66030001 CONNECTING ROD 3
29 91489200 KEY 8(h9)X7X35 UNI 6604/A 1
28 66020435 CRANKSHAFT C.21 - D. 24 1
27 98210600 OIL DIP-STICK G3/8X80 1
W4518 3/21/2026 Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key)
Pos. Code Description Qty Notes
26 66010022 CRANKCASE 1
25 91838000 ROLLER BEARING NJ2206EC 2
24 90075600 CIRCLIP D.45 (ZJ45) 1
23 70211801 OIL SIGHT GLASS 1
22 90387700 O-RING 39,34X2,62 (3156) 1
21 90391300 O-RING 67,95X2,62 (3268) 2
20 47151222 SIDE CRANKCASE COVER FOR 1
OIL GAUGE
19 99303900 SCREW M 8x16 UNI 5931 8
18 66130141 3
17 90516500 ANTI-EXTR.RING D.24.7x29x1.5 3
16 66210070 3
15 90385700 O-RING 23,81X2,62 (132) 6
14 66210166 3
13 90384300 O-RING 17,86X2,62 (123) 3
12 90511500 ANTI-EXTRUSION RING 3
11 36202551 VALVE CAGE 6
10 94737600 SPRING D. 9,4X14,8 6
9 36203266 SPHERICAL VALVE 6
8 36200366 VALVE SEAT 6
7 90384100 O-RING 17,12X2,62 (3068) 6
6 36712101 INTAKE/DELIVERY VALVE 6
5 66210270 3
4 90359600 3
3 90511800 3
2 99382000 8
1 66124041 1
W4518 3/21/2026 Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX
W4518 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
KIT175 34017501 1
KIT174 34017401 1
KIT150 34015001 KIT 150 INTAKE/DEL.VALVE 1
63 99180900 SCREW M06X10 5931 A2-70 1
62 96693950 WASHER 6.4x11.0x0.7 D6798A 1
INOX
61 98203600 PLUG G1/4x8 FOR PROBE D.6 1
S.S.
60 90075500 STOP RING J45 UNI7437 1
60 98204300 PLUG G1/4X10 1
59 93185800 1
58 90162500 OIL SEAL 22x32x5 3
57 90912600 BUSHING 22X25X30 3
56 99364400 SCREW M 10x18-5931 4
55 96710600 WASHER 10,2 4
54 47200074 PUMP FOOT 2
53 90263400 3
52 66216270 3
51 90263100 3
50 90361600 O-RING 34,65X1,78 (2137) 3
49 66080270 3
48 98210000 PLUG G3/8X13 1
46 90164800 OIL SEAL 30x55x7 1
45 47151022 OPEN SIDE COVER (47-66) 1
44 66219566 PISTON BOLT 3
43 90358400 O-RING D.10,82X1,78(2043)90SH 3
42 66040209 3
41 96710100 WASHER D. 10X28X0.5 3
40 66050066 PISTON GUIDE - S.S. 3
39 97740500 CONNECTING ROD-PIN D.14X39 3
38 99309900 SCREW M 8x35 UNI 5931 6
37 90358500 O-RING 10,82X1,78 (2043) 2
35 98217600 PLUG G1/2X10 1
34 96751400 WASHER 21,5X27X1,5 1
33 99188400 SCREW M 6x20 UNI 5931 4
32 66160022 REAR COVER 1
31 90392200 O-RING D.133.02X 2,62(3525) 1
W4518 3/21/2026 Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - vers. ATEX
Pos. Code Description Qty Notes
30 66030001 CONNECTING ROD 3
29 91489200 KEY 8(h9)X7X35 UNI 6604/A 1
28 66020435 CRANKSHAFT C.21 - D. 24 1
27 98210700 OIL DIPSTICK G3/8X64 1
D4+FILTER ATEX
26 66010022 CRANKCASE 1
25 91838000 ROLLER BEARING NJ2206EC 2
23 70211751 1
22 90387700 O-RING 39,34X2,62 (3156) 1
21 90391300 O-RING 67,95X2,62 (3268) 2
20 47151322 SIDE CRANKCASE COVER (ATEX) 1
19 99303900 SCREW M 8x16 UNI 5931 8
18 66130141 3
17 90516500 ANTI-EXTR.RING D.24.7x29x1.5 3
16 66210070 3
15 90385700 O-RING 23,81X2,62 (132) 6
14 66210166 3
13 90384300 O-RING 17,86X2,62 (123) 3
12 90511500 ANTI-EXTRUSION RING 3
11 36202551 VALVE CAGE 6
10 94737600 SPRING D. 9,4X14,8 6
9 36203266 SPHERICAL VALVE 6
8 36200366 VALVE SEAT 6
7 90384100 O-RING 17,12X2,62 (3068) 6
6 36712101 INTAKE/DELIVERY VALVE 6
5 66210270 3
4 90359600 3
3 90511800 3
2 99382000 8
1 66124041 1
W4518 3/21/2026 Page 8 - 8
Copyright INTERPUMP GROUP S.P.A
