For pressures to 300 psig (21 bar) or specific gravity down to 0.40
1-AV—A cast iron air vent that uses a free-floating
lever that closes positively, ensuring a leaktight closing under all
conditions. This vent is good for low capacity air/gas venting up to 300
psi (21 bar).
2-AV, 3-AV and 6-AV—These cast
iron vents use the same proven free-floating lever mechanisms used in
Armstrong steam traps. They are for applications where high air/gas
venting capacity is required, up to 250 psi (17 bar).
Installation and Maintenance