Double Block & Bleed Valves

Double Block & Bleed Valves provide a multi-valve single interface with pressure measuring systems in process control applications (upto 10,000psig)

1. Reduced potential leak paths with primary & secondary isolation in one valve.
2. Compact ball/OS&Y/needle valve assembly in one DBB.
3. Flange construction as per the requirements of ASME B16.5
4. NPT threaded connection to ANSI/ASME B1.20.1
5. Pressure rations as per ASME B16.34 Class 150 thru 2500.
6. Wetted components of Sour gas service valve are selected as per the requirements of NACE MR0175/ISO 15156
7. Fire tested as per BS 6755 part 2/API607
8. Anti-Static Device is set between the stem and ball.

Liferaft Capacity Model SWL Standard Outreach Max Launching Height

<16 P
<25 P
<39 P

Lms.15.2/3.3.5
Lms.23.2/3.6
Lms.37.0/4.5
15.2kN
23.2kN
37.0kN
3.5 m
3.6 m
4.5 m
45
45
45

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