Precision controls provides cast steel safety valve. Specifications: sizes available - 40 x 50 nb, 50 x 80 nb. 80 x 100 mb and 100 x 150 nb; end connections - flanged ends to ansi 300; material - cast steel body [wcb] with ss internals: ibr certificate - available for ibr applications; soft seating - also available for air applications: larger sizes - available on request. Operating parameters: minimum working pressure - 0.5 kg/cm2; maximum working pressure - 35 kg/cm2; maximum working temperature - 399c; and pressure ranges - 0.5 to 7.0 kg/cm?; 6.5 to 17.5 kg/cm2; 17.0 to 24.5 kg/cm2; 24.0 to 30.0 kg/cm2.
