Air Vents

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

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

Armstrong All Stainless Steel Free Floating Lever Air Vent, Model 11AV, Connections: 3/4-in x 1/2-in Out & 2.90-oz Float for 311 psi with 5/64 orifice
Armstrong part no. C3510-8

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

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

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, 17 psi, 7/32 inch orifice

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21 AR 3/4 inch, 92 psi, 3/32 inch orifice
Armstrong Part No: D500036

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21A$ 3/4 inch, 116 psi