Series 33A air release valve
Rated for 500 psi w/P
automatically eliminates air pockets
easily serviced without removal from pipeline
simple,effective,patented design,
corrosion resistant internal parts

Materials:

Ductile Iron ASTM A-536
Cast Steel ASTM A216-WCB
Naval Bronze ASTM B61
Stainless Steel ASTM A743-CF-8M
Nickel Aluminum Bronze ASTM B148
Titanium ASTM B367 Grade C2
Super Duplex Stainless steel