1B, 1/4" ADJUSTABLE VENT CONVECTOR-STEAM Winters Needle Valves The one-piece body construction (no

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

Accuracy of control ± 4°F (± 2

• Easy temperature adjustment

Model 21 provides wide temperature adjustment range for hot and cold water mixing

– BSPT threads

1B, 1/4" ADJUSTABLE VENT CONVECTOR-STEAM Winters Needle Valves The one-piece body construction (noConvector Steam Vents Model 1B Part No. 401425 Air Valve (non vacuum) Float type vent Adjustable port for true proportional venting 6 port settings from slow (1) to fast (6) Telescopic siphon tube 14" NPT straight shank Maximum operating pressure 112 psig (0. 1 bar)* Maximum pressure 10 psig (0. 7 bar) *Drop away pressure (maximum pressure against which the vent can open). Hoffman Convector Steam Vent Data Sheet