Compliance & Standards: D373H-16C Cast Steel Hard Seal Wafer Butterfly Valve

Our D373H-16C Triple Eccentric Cast Steel Wafer Hard Seal Butterfly Valve is designed, manufactured, and tested in full compliance with the following international and industrial standards, ensuring reliable performance, zero leakage, and long service life in high-temperature, high-pressure industrial applications.

✅ Design & Manufacturing Standards

•API 609: Butterfly Valves (Double-flanged, Lug-type, and Wafer-type)

• EN 593: Industrial valves — Butterfly valves for general use

• GB/T 12238: Flanged and wafer butterfly valves

• JB/T 8527: Metal-seated butterfly valves  

✅ Pressure & Leakage Testing Standards

• API 598: Valve Inspection and Testing

• ISO 5208: Industrial valves — Pressure testing of valves

• GB/T 13927: Industrial valves — Pressure testing  

✅ Dimensions & Connection Standards

• ASME B16.10: Face-to-Face and End-to-End Dimensions of Valves

• GB/T 12221: Metal valves — Face-to-face and end-to-end dimensions

• ASME B16.5: Pipe Flanges and Flanged Fittings

• GB/T 9113: Steel pipe flanges

 ✅ Material & Quality Control Standards

• GB/T 12224: General requirements for steel valves

• GB/T 12230: General specifications for steel castings for valves  

All valves are factory-inspected to these standards, delivering consistent quality and compliance for power plants, petrochemical facilities, heating systems, and industrial pipeline projects worldwide.