The Watts 0386471 (Series 9D-M3) is a heavy-duty 1/2" backflow preventer with vent designed specifically for boiler feed lines

single-pole

OEM Standards: Restores factory-spec ignition timing and reliability to prevent unburned gas buildup or delayed ignition faults

preventing exhaust leakage and ensuring high-efficiency performance

this valve is engineered for on/off hydronic control and diverting applications

Fireye 48PT2-9007 Scanner 320734-701 The Watts 0386471 (Series 9D-M3)The Fireye 48PT2 9007 is a high sensitivity infrared flame scanner designed for seamless integration with Burner Management Systems (BMS). This 90 degree side view scanner is engineered to detect the infrared signatures of gas and oil flames, making it a critical component for industrial combustion safety. Built with a 4 foot shielded lead wire, the 48PT2 9007 provides a reliable signal path to the flame safeguard control, minimizing electromagnetic