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Pressure Relief Valve – Spring Loaded

The Groth Model 2301A Emergency Relief Valve is designed to vent to atmosphere for emergency relief capacity above that supplied by a standard operating valve used on tanks, piping, and low pressure vessels. Emergency relief valves provide relief from excessive internal pressures which may cause tank damage.
Model 2301A is built of corrosion resistant material throughout. Groth’s self-closing special fluoropolymer “cushioned air” pallet with center stabilizing stem and peripheral guiding provides uniform seating and alignment. Superior performing fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture. The guides support a spun weatherhood which covers and protects the entire valve structure. As added protection against the entry of foreign matter, a mesh screen encircles the valve under the weatherhood.


  • Can be used for emergency relief on smaller tanks
  •  Peripheral and central seat guides ensure reliable, repeatable performance
  •  A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
  •  Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
  •  Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture

Size: 2″ (DN 50) through 12″ (DN 300) flange sizes
Material: Available in aluminum, carbon steel, stainless steel, and other materials
Pressure: 0.5 oz/in2 to 15 psig (2.15 mbarg to 1.03 barg)
Certification: ATEX and PED Approval

  • 150# ANSI, PN10, PN16, JIS drilling classes available
  • Buna-N, Fluoropolymer, FKM and other seating diaphragms
  • Steam Jacket
  • Spacer

Contact your rep to start an order or learn more.