Fenwal 35 665936 111 Control 30067439 890 Key Benefits: Universal Series Compatibility: Key Benefits: Universal Series Compatibility: Precision fit for Weil McLain CG The Rheem Ruud 61 26018 71 Expansion Valve is a professional grade 3 ton thermal expansion valve (TXV) engineered for precision refrigerant metering in R 22 HVAC systems Hardened Circuitry: Designed to withstand the electrical noise and thermal cycling typical of industrial boiler and furnace high limit strings Using a multi trial module in a system designed for a single trial lockout should only be done if it matches the manufacturer's updated technical specifications for the appliance