Air Vents

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

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

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21AR 3/4 inch npt, 5/32 Orifice, 33 PSI

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21AR 3/4 inch, 9/64 inch orifice, 41 psi
Armstrong Part No: D515553

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21AR 3/4 inch NPT 1/8 inch Orifice 52 Psi
Armstrong Part No: D505649

Cast Iron Fixed Pivot Ball Float Air/Gas Vent Model 21AR 3/4inch with 5/32 orifice

Air Vent for Hot or Cold Water and Non-Viscous Liquids, Brass Material, 1/8 inch, 50 psig max working pressure
Old Armstrong Part No: D24328
New Armstrong Part No D41789