Breather Valve

Breather Valve


PV relief valves are safety equipment designed to protect tank against rupturing or imploding. As long as the tank pressure remains within the valve pressure and vacuum setting the pallets remains in contact with the seat ring and no venting or breathing take place. If direct atmosphere discharge or nitrogen is used on vacuum inlet, a flanges connection is available.
PV relief valve is commonly referred to as a “breather valve” because of its primary function.
Flame arrestor can be mounted directly upstream of breather vent.

• new shape for fluid dynamic improvements
• pipe away connection on Pressure and process side
• pallet guide outside the process


SIZE: 4” (100 mm) through 8” (200 mm)
CONSTRUCTED: aluminium, carbon steel, stainless steel, additional metals and coatings
SETTING PRESSURE: +2,5 mbar to +50 mbar
SETTING VACUUM: -2,5 mbar to -30 mbar

 breather valve