Taco 334-T3 1/2" NPT (Union) X 1/2" NPT Cast Iron Pressure Reducing Valve And Pressure Relief Dual Control Valve Features: Adjustable from 10 - 25 PSI Built-in Check-Prevents emptying system in incoming pressure fails Fast Fill Rates Exclusive Lockable Fast-Fill Lever Pressure Setting Adjustment Separated from Fast Fill Lever for Easy, Fast Adjustment 334-T3, 334T-3, 334T3 Taco Boiler Feed Valves automatically feed water to a system whenever pressure in the system drops below the pressure setting of the valve. The Dual Control models combine the boiler feed with an in-line pressure relief valve connected at the outlet end.
