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The Watts 0383484 (Series 740) is a high-capacity boiler pressure relief valve engineered specifically for commercial and industrial hot water space heating applications
As a direct non-spring return replacement upgrade for legacy models
The Schneider Electric (Barber Colman) AV-390 Valve linkage is a critical sub-assembly designed for field integration of gear train actuators with VB-7XXX and VB-9XXX series valve bodies
Common Questions What are the symptoms of a failing blower bearing
Williams 8947 Conversion Kit 319847-401 The Watts 0383484 (Series 740)The Williams 8947 Natural to LP Gas Conversion Kit is a field proven solution designed for transitioning 500A Series hearth heaters from natural gas to propane. This kit is specifically engineered for 50,000 BTU models, including 5001522A and 5002522A (gravity no blower) and 5001922A and 5002922A (with blower). As a veteran technician knows, maintaining 50,000 BTU gas furnace performance requires precise orifice sizing; this kit includes a #45 drill