Visible Calibration: Integrated adjustment knobs and "Sight-Set" scales allow for rapid setpoint verification and field tuning

Will this replace a standing pilot valve

this backflow rubber parts kit ensures that both the first and second check valves

Combustion Stability: Maintains consistent burner performance and prevents inefficient fuel-to-air ratios

always handle the unit by the ceramic base to maintain the integrity of the silicon carbide element and ensure optimal hot surface ignition performance

Trane VAL8991 Valve 322057-301 Visible Calibration: Integrated adjustment knobsThe Trane VAL8991 is a core HVAC reversing valve designed specifically for 3 ton heat pump systems. Built to OEM specifications, this 4 way valve manages refrigerant flow direction to switch the system between heating and cooling modes. It features a 1 2 x 3 4 inch sweat connection for precise fitment into standard refrigerant lines. This reversing valve with 24V coil operates on common low voltage control circuits, ensuring seamless compatibility