Bell & Gossett Triple Duty Valves combine three valves into one: a calibrated balance valve, a spring-loaded check valve, and an isolation/shut-off valve to provide all of the functions usually required on the discharge side of hydronic pump systems. This design saves space and reduces installation time and money.
All B&G Triple Duty Valves feature a spring-loaded check valve to prevent backflow and gravity circulation, a calibrated nameplate that allows accurate balancing of the system and throttling of excess flow, and a memory stop to return the valve to its set position after shut-off.
Model 3DV valves feature a calibrated ball valve design to provide complete shut-off. In contrast, the larger Model 3D and 3DS valves feature a disc-style globe valve design with a soft seat design that provides complete shut-off and prevents valve chatter.
3DV Triple Duty Valves have a brass body, chrome-plated brass ball, and glass-filled Noryl check valve with a stainless steel spring. They include two extended P/T valves and an extended stem for ease of installation in insulated systems and have a choice of FNPT or rotatable flange inlet connection. They are available in sizes 1" through 2" and are suitable for up to 200 psi and 250°F.
Learn more about Bell & Gossett Model 3DV Triple Duty Valves here.
Model 3D (angle pattern) and 3DS (straight pattern) valves have iron bodies, brass discs with EPDM seats, and stainless steel springs. They are available in sizes 2"-16", feature flanged and grooved end connections, and are suitable for either 175 psi (flanged) or 300 psi (grooved) pressure and 250°F.
Learn more about Bell & Gossett Model 3D and 3DS Triple Duty Valves here.
Key Features of B&G Triple Duty Valves
- Three valves in one: calibrated balance valve with nameplate and memory stop/button, spring-loaded check valve, and isolation/shut-off valve
- Available in a wide range of sizes and connections
- Excellent Cv range of 9 to 3,225
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Read the blog post What is a Triple Duty Valve to learn more.