Tjernlund Products 950-0471 Fan Prover Kit 320074-702 High Pressure Rating: Rated for

High Pressure Rating: Rated for up to 500 PSIG

While the diameter is standard

The 3-inch insertion depth is optimized for mid-stream fluid measurement

This specific model generally utilizes mechanical connections

preventing premature component fatigue and ensuring reliable gas furnace troubleshooting and repair outcomes

Tjernlund Products 950-0471 Fan Prover Kit 320074-702 High Pressure Rating: Rated forThe Tjernlund Products 950 0471 Fan Prover Kit is a critical safety interlock designed for commercial PAI series intake hoods and induction systems. As a veteran grade pressure switch kit, it serves as the primary mechanism to verify proper airflow before allowing the burner circuit to energize. This OEM Tjernlund 950 0471 assembly features a high precision diaphragm calibrated to 1. 35" WC PF, ensuring that the draft inducer or vent fan is moving