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Air & Vacuum Relief Tank Vent Valve


This is a triple action valve that relieves pressure in the tank as the fluid level rises and relieves the vacuum as fluid levels drop. While under equal pressure it remains sealed. 


  • Vacuum Break: 2" water column, 0.1 PSI
  • Pressure Relief: 22" water column, 0.8 PSI
  • Maximum flow rate: 500 GPM


  • Stainless Steel –stainless steel screen surrounds the entire vacuum and pressure flow area
  • 1⁄4" FNPT connection for gas inlet, plug also supplied
  • Clamp connection standard
  • 304 Stainless Steel
  • EPDM elastomer

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