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How to Choose the Right GOST Standard Cast Steel Flange Gate Valve

July 18, 2025

When choosing the right GOST standard cast steel flange gate valve, consider the following key factors:

  1. Application Environment:

    • Ensure the valve is suitable for the type of fluid (steam, thermal oil, water treatment, etc.) and the working conditions (pressure, temperature).

  2. Valve Body Material:

    • Select a material (WCB, CF8, Hastelloy, etc.) based on corrosion resistance and temperature resistance.

  3. Size and Pressure Rating:

    • Choose the valve size (DN50-DN300) and pressure rating (PN16, PN25) based on the pipeline specifications.

  4. Temperature Range:

    • Ensure the valve can handle the required temperature range.

  5. End Connection:

    • Ensure the valve’s flange matches the pipe connection.

  6. Operation Type:

    • Choose manual or automatic operation based on frequency of use.

  7. Maintenance and Durability:

    • Consider valves with long-lasting durability and minimal maintenance.

Selection Table

 

Selection Factor Description Selection Standard
Application Environment Choose a valve suitable for the fluid type and working conditions Steam, thermal oil, water treatment, chemicals, oil & gas
Valve Body Material Select a material based on corrosion and temperature resistance WCB, CF8, CF8M, Hastelloy, Monel, etc.
Size and Pressure Rating Choose valve size and pressure rating according to pipeline specifications DN50~DN300, PN16, PN25
Temperature Range Select a valve that can withstand the required temperature -29°C to 425°C
End Connection Ensure flange connection matches the pipe GOST standard flange
Operation Type Choose manual or automatic operation based on frequency of use Manual operation or electric/pneumatic automatic operation
Maintenance and Durability Choose a valve with long life and minimal maintenance Durable, low maintenance cost