Import Api 609 Concentric Butterfly Valves — Buy in wholesale FOB from Supplier in China

The API 609 concentric butterfly valve from China Xinhai Valve Manufacturer Company features a centred-disc, soft-seated design intended for isolating and regulating flow in water treatment, oil and gas, and chemical processing systems. The concentric geometry keeps the disc centred on the stem axis, allowing uniform seat compression and smooth quarter-turn operation. The valve is built to API 609 for dimensional and design standards, with end flanges drilled to ANSI B16.5 for Class 150 compatibility. The body material is described as robust cast or forged steel, though the exact grade should be confirmed with Xinhai directly.

The soft-seat configuration typically employs an elastomeric liner bonded to the body or a replaceable seat ring, providing tight shut-off at low to moderate pressures. The concentric design suits clean fluids and gases where minimal pressure drop and full port flow are priorities. For this series, buyers should verify the seat material, whether EPDM, NBR, or PTFE-lined, and confirm the temperature and chemical compatibility with their process. The valve accepts manual levers, worm gears, pneumatic, and electric actuators via an ISO 5211 mounting flange.

Target buyers include municipal water authorities, petrochemical contractors, and industrial plant engineers needing reliable flow control at lower cost than double-offset or triple-offset metal-seated alternatives. The wafer body allows installation between existing ANSI flanges without disturbing adjacent piping. Before purchasing, confirm the exact pressure-temperature rating, Cv flow coefficient, and whether Xinhai supplies valves with bare shafts or factory-mounted actuators. Response signals from this supplier currently show zero percent response rate, so direct communication channels and backup suppliers are advisable.

China Xinhai Valve Manufacturer Company operates from Xinhai Industry Zone in Sanqiao, Oubei, Wenzhou, Zhejiang Province, China. Wenzhou is recognised as a major cluster for Chinese valve manufacturing, with extensive supply chains for castings, forgings, and machining services. The supplier holds a harbour trust tier but shows a 0.00 percent response rate and zero recorded average response hours, indicating potential communication delays. No founding date, employee numbers, revenue figures, or named clients appear in the source data.

The company positions itself as a manufacturer of API 609 concentric butterfly valves for industrial flow control, with claimed applications across water treatment, oil and gas, and chemical processing. The source mentions ISO and CE certifications, but these are not verified in the listing and should be treated as claims requiring documentary proof. Buyers should conduct independent verification of factory existence, quality system certificates, and product testing capabilities before committing to volume orders.