Description

The purpose of the manual decompression relief valve in the surface BOP control device is to reduce the high pressure fluid (21 MPa) in the accumulator to the lower pressure required to control the BOP (usually 10.5 MPa). In addition, under certain conditions, the valve also has the function of automatic overflow and pressure reduction, so the method can be used for both oil and tooth overflow.

14 Y16-26 Oil in valve seat 1
13 Y6-22 Valve seat 1
12 GB3452. 1-82 “O” seal ring 3
11 Y16-28 oil drain sliding sleeve 2
10 Y16-20 Pressurg reducing sliding sleeve 4
9 Y02-12 Valve Plate 2
8 GB3452. 1-82 “O” -ring 4
7 Y16-19 Pushing rod /
6 Y16-18 Stablizer 1
5 GB3452. 1-82 O -ring 1
4 GB3452. 1-82 O -ring 1
3 GB3452. 1-82 O -ring 3
2 Y16-12 Rubber diaphram 1
1 GB301-64 Bearing 1
Item No. Code Description Qty
JYSQ21-25
Pneumatic/manual pressure regulating valve
Drawing No. Y16-00