Bell & Gossett 3DS-2S Series 132121 Triple Duty Valve, 2 in Nominal, Flange, 275 gpm, 175 psi, 250 deg F

The Bell & Gossett Triple Duty valve is a combination valve that provides all of the functions normally required on the discharge side of hydronic pump systems. The design combines three valves into one: a calibrated balance valve, a spring loaded check valve, and an isolation/shut-off valve. The combination of multiple valves helps save space and reduces installation time and money. Calibrated nameplate designed to allow you to accurately balance your system and throttle excess flow. The larger Model 3D and 3DS valves utilize a disc style globe valve design that also features a soft seat design that provides complete shut-off and prevents valve chatter.All valves feature a memory stop or memory button to allow you to return the valve to its set position after shut-off. Include a spring loaded check valve to prevent backflow and gravity circulation. Glass filled Noryl check valve with a stainless steel spring.