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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.

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.

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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.

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High-efficiency gas tankless water heaters from Bosch offer an endless supply of hot water. Rather than storing water in a storage tank, gas tankless water heaters heat water directly through the pipes — no tank required. When a hot water faucet is turned on, cold water flows through a heat exchanger in the unit and is warmed by a natural gas burner. This feature allows tankless water heaters to deliver a constant supply of hot water. Bosch gas tankless water heaters are built to last and have lower operating and energy costs to provide sustainable home comfort.

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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.

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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.

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