DIN 901/ 902 Spring Loaded Steam Safety Valve / Pressure Relief Valve

DIN 901 / 902 Spring Loaded Full Lift Safety Valve is applicable as the pressure protecting device in the equipment or pipelines for steam, air, etc., which the working medium is ≤350ºC.

• Critical Protection: Historically essential for steam boilers to prevent accidental explosions during pressure surges.
• Equipment Safety: Designed to protect pressure vessels (fired or unfired) and heat exchangers.
• Fluid Compatibility: Specifically optimized for compressible fluid applications such as gas, vapor, and steam.
• Thermal & Flow Relief: Provides protection against excess pressure caused by both thermal expansion and fluid flow surges.
• Compact Efficiency: For liquid-packed vessels, these valves provide substantial pressure reduction with minimal fluid discharge.

A full lift safety valve ensures the disc lifts sufficiently so the curtain area no longer limits the discharge. Capacity is determined by the bore area, occurring when the disc lifts at least a quarter of the bore diameter. This is the optimal choice for general steam applications.