Common Questions & Technical Support What is the rotation direction for the 843752 blower wheel

Installing a propane-calibrated valve on a natural gas line will lead to improper burner pressure and hazardous operation

The 48-frame assembly includes a 1/2-inch flat shaft and ball bearings for quiet

Can this tee be used with high-pressure refrigerants like R-410A

Precision Engineering: 1060 RPM speed is factory-tuned to minimize harmonic noise and cabinet vibration

Marvair 20509 TXV Valve 319848-301 Common Questions & Technical SupportThe Marvair 20509 TXV Valve is a high precision thermostatic expansion valve engineered for 3 ton HVAC systems, providing critical refrigerant metering for both commercial and residential applications. Featuring a 3 8 inch by 5 8 inch ODF connection, this thermal expansion valve is designed to stabilize superheat by accurately modulating refrigerant flow into the evaporator coil. As the official replacement TXV valve and direct updated version for