Crosby H Series Direct Spring Safety Valves

H-Series direct spring operated safety valves are the proven solution for comprehensive overpressure protection for steam safety applications including economizers, steam drums, superheaters, reheaters and more. They provide comprehensive overpressure protection for ASME Boiler and Pressure Vessel Code Section I, and Section VIII steam safety applications.


  • ASME/NB certified capacities for steam.
  • Set and tested on steam.
  • ISOFLEX seat tightness up to 96%.*
  • Tight shutoff.
  • Full nozzle flanged option.
  • Restricted lift for customized capacity.
  • Long service life.
  • Low maintenance.
  • Two ring set pressure and blowdown control.
  • Achieved under laboratory controlled conditions.

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Crosby H Series Direct Spring Safety Valves

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