Sizes and pipe connections Pipeline ancillaries Depressurisation valves
10
Screwed 3/8 " NPT and BSP (to fit DTP strainer cap) for straight through discharge. Screwed ½ " NPT and BSP for straight through discharge. Socket weld DN15 pipe end schedule 80 to suit ANSI B 16.11 Class 3000 for straight through discharge. Screwed 3/8 " and ½ " BSP fitted with 1/8 " BSP compression fitting for side discharge with 6 mm O/D tube. Screwed 3/8 " and ½ " NPT fitted with 1/8 " NPT compression fitting for side discharge with ¼ " O/D tube Socket weld DN15 with 1/8 " NPT compression fitting for side discharge with ¼ " O/D tube.
BDV1
BDV2
BDV2
BDV1
2
4
3
1
1
3
4
2
5
7.14.3
Materials No. Part
Material
1 2 3 4
Valve body
Stainless steel
ASTM A182 F304/F304L
Valve screw
Stainless steel
ASTM A276 431
10.14 2
Valve cone
Stainless steel
AISI 440 B
Retaining ring
Stainless steel
BS 2056 302 S26
5
Compression fitting (BDV2 only)
Carbon steel
TI-P600-01 CMGT Issue 10
Page 2 of 4
BDV1 and BDV2 Blowdown/Depressurisation Valves
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