Shoulong Valve
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Eliminates external leakage paths and enhances long-term sealing integrity for critical gas transmission pipelines.
Ensures pressure-balanced sealing stability and reliable shut-off performance in large diameter pipeline applications.
Structural reinforcement and optimized internal design maintain rigidity and alignment in oversized valve configurations up to DN1200 and beyond.
Provides secure isolation, cavity pressure relief, and verification capability for safe gas transmission operations.
Designed to meet emergency sealing requirements and ensure operational safety in hazardous gas environments.
Advanced welding procedures and full testing ensure durability and reduced maintenance for critical infrastructure.
It eliminates external flange joints and threaded connections, common leakage points in bolted designs, making it ideal for high-pressure gas transmission where zero leakage is critical for safety.
The ball is anchored by upper and lower trunnions to absorb pipeline pressure loads. This ensures consistent sealing force, lower operating torque, and reliable shut-off performance in large diameter applications.
DBB means the valve has two independent seating surfaces blocking flow from both sides, with a bleed port to vent the cavity. It is mandatory for safe isolation and pressure verification during maintenance.
Fire-safe performance is evaluated against API 607 and API 6FA. Anti-static requirements, ensuring electrical continuity to prevent static charge, are outlined in API 6D and ISO 17292.
Standard configurations are available up to DN1200. Custom engineering solutions for larger sizes are available upon request with structural reinforcement for extreme scale operations.
Each valve undergoes NDE inspection (ultrasonic, radiographic, magnetic particle) and full in-house hydrostatic and pneumatic pressure testing to ensure long-term pipeline reliability.
