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DOUBLE BLOCK & BLEED - COMBINATION VALVES
DOUBLE BLOCK & BLEED COMBINATION VALVES
Type: Double Ball or Double Gate valves with a Needle Bleed Valve
Special combination with check valve and quill for injection on request
Design Construction : ANSI B16.34; B31.1; B31.3 and MSS-SP84
Classes up to 4500 lbs according to ANSI B16.34
Port dimensions are in accordance with customer specification
Testing according to API 598 and BS 6755
Marking according to MSS SP25
Fire safe according to API 6A or BS 6755
DDB with Gate valves
For technical detail see “Forged Gate Valves”
DDB with Ball valves
Floating ball for classes up to 2500 lbs
Trunnion design for classes 2500 and 4500 lbs
Antistatic device and anti blow-out type
Integral or modular bolted ends
Socket Welding Ends according to ANSI B16.11
Screwed Ends according to ANSI B1.20.1
Butt Welding Ends according to ANSI B16.25
Flanges RF or RTJ according to ANSI B16.5
Clamp lock on customer requirements
Size 1/4" to 6”