Breather valves

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 flanged connection is available.
PV relief valve is commonly referred to as a “breather valve” beacause of its primary function.
Flame arrester can be mounted directly upstream of breather vent.

Features:

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
FLANGE RATING: ANSI 150, PN16