BS 6364 Ball Valve

A BS 6364 ball valve is a highly engineered, quarter-turn rotary isolation valve specifically designed, manufactured, and non-destructively tested to comply with British Standard BS 6364 for cryogenic fluid applications. Engineered to handle ultra-low temperature liquified gases, the valve features an extended bonnet assembly that positions the stem packing and shaft seals safely away from the freezing process media, maintaining a pocket of vaporized gas to prevent seal freezing and catastrophic fugitive emissions. The internal floating or trunnion-mounted ball rotates against high-purity polymer seats (such as PCTFE) and incorporates an automatic internal cavity pressure relief hole to prevent explosive overpressure caused by liquid expansion within the body cavity. Cryogenic plant operators and LNG terminal procurement managers can secure safe, low-temperature fluid containment by importing certified BS 6364 ball valves directly from specialized manufacturers in China via our advanced B2B commercial platform.