JB/T 8691 Butterfly Valve

A JB/T 8691 butterfly valve is a compact, space-saving quarter-turn rotary valve designed, manufactured, and pressure-tested in strict compliance with Chinese industrial standard JB/T 8691 (governing knife gate and specialized wafer butterfly valves for slurry and utility services). Available in concentric or eccentric disc profiles with resilient or metallic seats, it provides reliable flow isolation and coarse throttling in municipal and industrial fluid networks. Conforming to national and international manufacturing guidelines including GB/T 12238 and ISO 5752, these standardized valves are primary specifications in regional water treatment plants, industrial utility headers, and civil infrastructure projects, allowing procurement managers to secure standardized quality by importing certified JB/T 8691 butterfly valves directly from leading manufacturers in China via our advanced B2B commercial platform.