Shoulong Valve
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Two independent ball valves with a central bleed cavity provide positive upstream and downstream isolation with safe pressure release and verification.
Trunnion-mounted structure reduces operating torque and ensures stable sealing performance under high pressure conditions.
Flanged inlet combined with high-pressure threaded outlet enables compact and flexible installation in complex pipeline layouts.
Reduced bore design is ideal for sampling points, injection lines, and instrumentation branches without compromising isolation safety.
Independent stem bases with locking devices prevent accidental or unauthorized operation in hazardous environments.
Forged body materials with Class 2500 pressure rating ensure long-term reliability in Oil & Gas, offshore, and high-pressure chemical services.
Forged Steel Double Block and Bleed (DBB) Double Ball Valve is designed for high-pressure and high-risk isolation applications where absolute sealing integrity and operational safety are critical. Featuring a fixed trunnion-mounted DBB structure with two independent ball valves and a dedicated bleed cavity, the valve ensures complete upstream and downstream isolation with reliable pressure verification.
The valve adopts a reduced bore design with a flanged inlet and a high-pressure threaded outlet (NPT or BSP), enabling flexible installation in compact pipelines, sampling lines, and instrumentation branches where space is limited and safety requirements are stringent.
Manufactured from A105N forged carbon steel and rated up to Class 2500, this valve is suitable for severe service conditions in Oil & Gas production, offshore platforms, deepwater systems, and high-pressure chemical processes. Dual independent stem bases with locking devices, combined with a mechanical linked manual operation mechanism, further enhance operational safety and effectively prevent accidental or unauthorized operation in hazardous environments.
