Valve to be leak-tight at full rated working pressure. All valves to have calibrated nameplates to assure specific valve settings. Valves to have memory stop feature to allow valve to be closed for service and then reopened to set point without disturbing balance position. Lead Free Brass Circuit Setter Balancing Valve - Buy Balancing Valve circuit setter balancing valve brass lead larger. Valve bodies to have 1/4" NPT tapped drain/purge port. 117410LF - Bell & Gossett 117410LF - RF-1/2S Circuit Setter Balance rf balance valve circuit list setter sweat 2s. Read-out ports to be fitted with internal EPT inserts and check valves. Valves to have differential pressure read-out ports across valve seat area. LEAKAGE THROUGH THE CIRCUIT SETTER SEAT If the Circuit Setter leaks in the shut off or closed position, the rubber seat may be replaced as follows: 1. Pump impeller trim after system balance will reduce system horsepower and operating costs to minimum levels.Īll valve to be of bronze body/brass ball construction with glass and carbon filled TFE seat rings. With this procedure, system balance and start-up time is reduced dramatically. Terminal Unit balance valves can be simply pre-set using the B&G Circuit Setter Model RF Curves and the system piping plan. This system balance method, developed by B&G, assures optimum system flow balance at minimum pump operating horse power. The CIRCUIT SETTER Model RF calibrated balance valve is designed specifically for pre-set or proportional system balance for use with terminal and fan coil units.
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