National standard check valve
· Product Parameters
Structural Features of National Standard Lift Check Valves
1. The product is designed, manufactured and inspected in accordance with the national standard GB/T 12235, with reliable sealing and excellent performance.
2. The sealing surfaces of the disc and seat are surfaced with iron-based alloy or stellite cobalt-based hard alloy, which has good wear resistance, high temperature resistance, corrosion resistance, scratch resistance and long service life.
3. Various piping flange standards and flange sealing surface types can be adopted to meet various engineering needs and user requirements.
4. The valve body materials are complete in variety, and the gaskets can be reasonably selected according to the actual working conditions or user requirements, so as to be applicable to various pressure, temperature and medium working conditions.
5. Check valves with different structural forms and connection forms can be designed and manufactured according to user requirements, and used as supporting facilities for various equipment.
Standards and Specifications for National Standard Lift Check Valves
Nominal Pressure PN (MPa): 1.6~16
Shell Strength Test Pressure: 1.5 times the nominal pressure at normal temperature
High Pressure Sealing Test Pressure (MPa): 1.1 times the nominal pressure at normal temperature
Working Pressure at Normal Temperature (MPa): ≤1.6~≤16
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