Automatic Vent Valve, Air, Size 1/4 In, MPT Connection, Material of Construction Brass, Float Material Polyethylene, Min Working Pressure 1.45 PSI, Max Working Pressure 150 PSI, Temp Range 33 To 240 F, Vent Dia 1 1/4 In, Vent Height 3 1/8 In Expansion Tanks and AccessoriesButyl rubber diaphragms. Brass Schrader valve with O-ring seal. Corrosion-resistant finish. Not for use in potable or open-loop systems. 5-yr. warranty.Factory precharged to 12 psi Max. liquid temp.: 240 F Max. pressure: 100 psi
