Maid O' Mist 1/8 in. NPT Brass Air Vent

The No 95 Push button Manual Vent provides the easiest way ever to manually vent a radiator. You do not need a key, coin or screwdriver. All you have to do is push on the insulated cap of the No 95 Pushbutton Manual Vent to release trapped air. Let go and the vent closes automatically. Great for tight spaces where vents requiring a key or coin are not practical.