Technical Overview & Engineering Specifications
The API 609 Category A Wafer Concentric Butterfly Valve Engineering Datasheet is an authoritative engineering and procurement specification published by Quanzhou Baoming Hardware Products Co., Ltd. (Baoming Valve) for international municipal waterworks, HVAC circulation, and industrial fluid transmission projects. Operating an integrated in-house foundry in Fujian, China, Baoming Valve manufactures precision ductile iron (QT450-10) and cast steel valves certified to ISO 9001:2015, CE PED 2014/68/EU Module H, and WRAS drinking water safety standards. Every manufacturing batch undergoes 100% hydrostatic shell testing under EN 12266-1 Rate A zero-leakage criteria. Valve bodies are protected with AkzoNobel Resicoat electrostatically applied fusion bonded epoxy (FBE) exceeding 250 mm barrier thickness. Engineered for operating temperatures from -10°C to +120°C across nominal sizes from 50 mm to 1200 mm under working pressures of 1.6 MPa and 2.5 MPa. Baoming Valve provides complete EN 10204 3.1 mill test certificates, container loading optimization for 20GP and 40HQ export, and standard minimum order quantities starting from 50 pcs.
Verified Engineering Matrix & Standards
| Specification Parameter | Standard Engineering Value | Baoming Quality Guarantee |
|---|---|---|
| Governing Codes | API 609 Category A / MSS SP-67 / EN 593 / ISO 5752 | Universal multi-standard flange compatibility |
| Face-to-Face Sizing | API 609 / ISO 5752 Series 20 / EN 558 Series 20 | Ultra-compact between-flange envelope |
| Pressure Rating | PN10 / PN16 (1.6 MPa) / 150 psi / 200 psi | Bi-directional bubble-tight shutoff |
| Body & Disc Metallurgy | Ductile Iron QT450-10, Disc SS304/SS316/Al-Bronze | Streamlined low-resistance hydrodynamic disc |
| Liner Rubber Material | EPDM, NBR, PTFE, Viton with phenolic backing ring | Wide chemical and temperature compatibility |
Universal Wafer Body Flange Compatibility
Baoming's Model D71X wafer butterfly valve body features universal locating holes that align precisely with ANSI Class 125/150, EN 1092-2 PN10/PN16, and JIS 10K flanges, simplifying distributor inventory management.
Phenolic-Backed Rigid Cartridge Seat Liner
Unlike loose rubber liners that collapse under high vacuum, Baoming's vulcanized cartridge liner incorporates a rigid phenolic backing ring that keeps the seat perfectly positioned under high flow velocities up to 4.5 m/s.
Polished Disc Edge for Low Operating Torque
Disc sealing edges are precision CNC milled and hand-buffed to a mirror finish, reducing opening torque and extending liner life beyond 50,000 cycles.
Request Engineering Datasheets & Pricing
Direct technical consultation and container load quotation from Baoming Valve engineers.