Analysis of Cast Steel Check Valve Application Scenarios

I. Chemical and Petrochemical Fields
Corrosive Media Control: Applicable to acid, alkali and other corrosive media delivery systems. The sealing surface adopts Co-based carbide surfacing technology with excellent corrosion resistance (applicable temperature: -29~550℃, pressure ≤2500LB)13.
Cast Steel Check Valve High Temperature and High Pressure Environment: Used for one-way cutoff of high-temperature steam and oil pipelines in petrochemical and fertilizer plants. H44H/Y-type valves can withstand 25MPa pressure35.
II. Energy and Power Systems
Boiler and Power Station: Used in boiler water supply systems to prevent medium backflow and ensure the stability of steam-water circulation (working pressure covers 1.6~42MPa)12.
Nuclear Power and Thermal Power Generation: As an overpressure discharge valve in the cooling system of nuclear power plants and the ash conveying system of thermal power plants, the material must meet the WC6 high temperature corrosion resistance requirements23. 3. Industry and Municipal Infrastructure
‌Metallurgy and Mining‌: Used for cooling water control of metallurgical heating furnaces and mine drainage systems to prevent fluid backflow from causing equipment failures‌12.
‌Urban Pipeline‌: Realize one-way flow of media in heating, fire water supply and high-rise building pressure reduction systems to ensure pipeline safety‌25.
4. Ships and Special Scenarios
‌Ship Pipelines‌: Installed in ship power systems and liquefied natural gas pipelines to prevent fuel or gas backflow from causing safety accidents‌24.
‌Adaptation to Extreme Conditions‌: American standard swing check valves (such as H42H-160C) perform well in high-pressure and high-flow scenarios and are suitable for emergency shutoff of oil pipelines‌