Goodman B1789868 Flow Check Piston KitFlow Check Piston Kit (M20) from Goodman B1789868 delivers precise flow diagnostics for HVAC systems. Built for reliable field testing, this kit helps technicians verify refrigerant flow and air flow with confidence, ensuring efficient performance and timely preventive maintenance. Designed to fit Goodman equipment and compatible with standard M20 configurations, the Flow Check Piston Kit simplifies routine service and troubleshooting. Its robust

three male threaded inlets/outlets: 3/4" nominal size with end connections for easy installation

Coil voltage options: 24 VAC

Type: Gas valve for safe ignition and accurate gas flow control

5 VA and a secondary short-circuit current of 45 mA

Precise thermostatic control maintains a stable mixed-water temperature even as supply conditions change

Compatible with a range of Goodman HVAC models for maintenance and service

helping facility managers and homeowners maintain accurate awareness of fill status and prevent overfills

Lead & Wiring: 18-inch wire leads

Designed for durability and easy integration with Goodman equipment

It supports solenoid valve repair efforts

making it a dependable choice for zone control applications

End Connections: Solder