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The 5211 series conventional spring-type safety valve, 5211B is a back-pressure balanced bellows spring-type safety valve. This is a large-diameter safety valve which developed on the basis of API526 standard. Applicable to air, gas, water vapor, liquid, and other media.

Size: 10″x14″ to 20″x24″
Nominal Pressure: Class150 ~ Class300, PN16 ~ PN40
Orifice Diameter: V ~ BB(272.19 ~ 1193.55cm2)
Available Temperature: -29°C ~ 538°C
Set Pressure: 1.72 ~ 20.69 Barg
Standard: ASME VIII