4, 1/2" x 3/4" VENT THERMOSTATIC STEAM Winters Needle Valves • No lock out with

• No lock out with loss of power if probe is in water

& mounting plate

The one-piece body construction (no welding) provides strength

• Maximum power consumption

4, 1/2" x 3/4" VENT THERMOSTATIC STEAM Winters Needle Valves • No lock out withModel 4 Part No. 401416 Quick Valve Thermostatic air vent For steam systems and process equipment Operates on temperature change only; does not close against water Must be installed 6 10" (150 250mm) above horizontal return and 18" (450mm) above the boiler water line 12" NPT female and 34" NPT male straight shank Maximum operating pressure 25 psig (1. 7 bar)* Maximum pressure 25 psig (1. 7 bar) To prevent steam vents from sputtering water or damage