Model 8820A – Combination Relief Valves & Flame Arresters with Pipe-Away

The Model 8820A combination units are used for pressure and vacuum relief where vapors must be piped away

They are designed to protect your tank from damage created by overpressure or excessive vacuum, at the same time that they provide protection from externally caused sources of heat and ignition. The result is reduced emissions level and increased fire protection and safety.


  • Sizes 2″ through 12″
  • Pressure settings 0.5 oz/in2 to 15 psig
  • Vacuum settings 0.5 oz/in2 to 12 psig
  • Available in aluminum (type 356), carbon steel, stainless steel, and other materials
  • Proven spiral wound, crimped ribbon, flame element
  • Modular construction
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