Shut-off valve

The main structural features are:

　　 1. The product has reasonable structure, reliable sealing, excellent performance and beautiful appearance.

　　 2. The sealing surface is welded with cobalt-based cemented carbide, which is wear-resistant, corrosion-resistant, corrosion-resistant, good in resistance to sassafras, and has a long service life.

　　 3. The valve stem has been quenched and tempered and surface nitriding treatment, which has good corrosion resistance and sassafras resistance.

　　4. The valve is designed with an inverted sealing structure, and the sealing is reliable.

　　The material of the parts and flanges, and the size of the butt welding end can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.

　　Product specifications

　　Design standards: BS 1873, ASME B16.34, GB/T12235

　　Structural length: ASME B16.10, GB/T 12221

　　Connection standards: ASME B16.5, GB/T 9113, JB/T 79, HG/T20592, ASME B16.25

　　Pressure test: API 598, GB/T 13927, GB/T 26480, JB/T 9092

　　Pressure and temperature rating: ASME B16.34, GB/T12224

　　Main material: WCB, WC6, WC9, C5, CF8, CF8M, CF3, CF3M, A105

　　Nominal diameter: NPS 1/2″～NPS 24″ DN15～DN600

　　Pressure range: CL150～CL2500 PN10～PN420

　　Working temperature: -29℃～+550℃

　　Flange connection stop valve is suitable for the pipelines of various working conditions such as petroleum, chemical industry, thermal power plants, etc., with a nominal pressure of PN1.6-16.0MPa and a working temperature of -29-550℃, to cut off or connect the pipeline medium.