Description

The pneumatic pump is one of the main hydraulic components of the control system for surface BOP stacks. It uses compressed air as the power source. The pneumatic pump is a device converting air pressure energy into hydraulic energy and can increase pressure up to 40MPa. When the motor doesn’t work, the pneumatic pump can pressurize the whole system.

34 Y20-24 Seal ring 4
33 Y20-23 Pressure ring 2 67 GB70-85 Screw 2
32 Y20-22 Copper sleeve 1 66 GB308-77 5/8″ steel ball 2
31 Y20-21 Cylinder piston rod 1 65 2-115 O-Ring 2
30 Y20-20 Connecting rod 2 64 Y20-46 Reversing valve position spring 2
29 GB6170-86 Nut M16 1 63 Y20-45 Guide pin 2
28 Y20-19 Spacer 2 62 Y20-44 Air shield 1
27 Y20-18 Tightening screw 1 61 Y20-43 Air shield screw 2
26 Y20-17 Nut 1 60 GB6171-86 Nut 2
25 Y20-16 Pressure ring 1 59 GB802-76 Cap nut 8
24 Y20-15 Spring seat 2 58 Y20-42 Stud bolt 8
23 Y20-14 Reversing valve buffer spring 1 57 Y20-41 Nameplate 1
22 Y20-13 Reciprocating rod 1 56 Y20-40 Air hose 2
21 2-216 O-Ring 1 55 Q/ZB208-77 Pipe joint 4
20 GB41-86 Nut M10 8 54 Y20-39 Round nut 1
19 GB93-76 Washer M10 8 53 GB308-77 1/2″ steel ball 1
18 Y20-12 Lower cylinder head 1 52 Y20-38 Ball seat 1
17 Y20-11 Spacer 2 51 Y20-37 Spring retaining ring 1
16 Y20-10 Cylinder piston rod 1 50 Y20-36 Pressure spring 1
15 Y20-9 Cylinder 1 49 Y20-35 Washer 1
14 Y20-8 Position screw sleeve 1 48 Y20-34 Ball block 1
13 2-445 O-Ring 1 47 GB308-77 1″ steel ball 1
12 Y20-07 Piston 1 46 Y20-33 Valve seat 1
11 GB893.1-86 Hole retaining ring 52 1 45 2-227 O-Ring 2
10 2-203 O-Ring 1 44 Y20-32 Pump head 1
9 Y20-06 Right retaining ring 1 43 Y20-31 Sealing seat 1
8 Y20-05 Pad 1 42 Y20-30 Oil cylinder 1
7 2-217 O-Ring 2 41 Y20-29 Pump body 1
6 2-224 O-Ring 5 40 GB6173-86 Nut 2
5 Y20-04 Slide plug 1 39 GB93-76 Washer 2
4 Y20-03 Left retaining ring 1 38 Y20-28 Spring retaining ring 1
3 Y20-02 Air sleeve 1 37 Y20-27 Pressure Spring 1
2 GB6170-86 Nut M6 3 36 Y20-26 Washer 1
1 Y20-01 Reversing valve body 1 35 Y20-25 Adapter ring 2
Item No. Code Description Qty Item No. Code Description Qty
AIR PUMP QYB40-120L
Drawing No. Y20-00