Reliable Protection of Vacuum Systems from Pressures > 1.5 Bar

The main requirement of a modern pressure relief valve is its reliable and precise acting relief trigger. The 21.2 relief trigger is driven by a high durability pressure spring that is laid-out for extended lifetime. The trigger is calibrated to open the valve at a pressure of 1.2 to 1.5 bar. Its operating range is set between 1 x 10-8 mbar and 1.2 bar with a gas flow of max. 6 l/min.

Tested in thousands of demanding applications under various process conditions, the 21.2 series has proven its outstanding reliability.

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The 21.2 Pressure Relief Valve is available in DN 16mm (5/8“). The valve body is made of stainless steel. The standard flange is ISO-KF. Its bakeout temperature is ≤ 150 °C.

Key features of the 21.2 Pressure Relief Valve

Features：

    • Vacuum system protection > 1.5 bar
    • Trigger calibrated to open valve at 1.2 to 1.5 bar

Benefits：

    • Extended lifetime
    • Precise operation
    • Low cost of ownership
  • Technical data
Sizes DN 16 mm (⅝")
Body Material Stainless Steel
Standard Flanges ISO-KF
Leak RateVale Body, Valve Seat< 1 × 10-9 mbar ls-1
Pressure Range 1 × 10-8 mbar to 1.2 bar (abs)
Differential Pressure at Opening 1.2 to 1.5 bar
TemperatureAmbient0– 50°C
 Bakeout≤ 150°C
MaterialValve BodyAISI 304L (AISI 1.4306)
Seal FKM (Viton®)
Gasflow 0–6 l/min
Weight 0.046 kg / 1 lbs

 

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