Air Vents

Free Floating Lever Cast Iron Air/Gas Vent Model 1AV 3/4 inch, 219 psi with #38 orifice

Armstrong All Stainless Steel Free Floating Lever Air Vent, Model 11AV for 178psi with 1/8 orifice
Armstrong part no. D501408

Free Floating Lever Cast Iron Air/Gas Vent Model 1AV 1/2 inch, 173 psi with 7/64 orifice
Armstrong Part No: D501841

Free Floating Lever Cast Iron Air/Gas Vent Model 1AV 1/2 inch , 219 psi with #38 orifice

See-thru Body Free Floating Ball Float Mechanism Air vent Model 1AVC 1/2 inch inlet x 3/4 oulet x 1/2 inch/vent, 150 psi

See-thru Body Free Floating Ball Float Mechanism Air vent Model 1AVC 3/4 inch inlet x 3/4 inch alternate inlet x 1/2 inch outlet

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model Model 21-AR 1/2 inch npt, 23 psi, 3/16 inch orifice

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21AR 1/2-in NPT, 92 psi, 3/32-in orifice
Armstrong order no D500248

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21AR 3/4 inch, 133 psi, 5/64 Orifice Vent
Armstrong Part No: D500631

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21AR 3/4 inch NPT, 1/16 orifice, 250 Psi, 4.12 oz Float Weight