000-hour or annual service interval for field technicians

Can the setpoint be calibrated in the field

providing a reliable defense against motor overheating

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

ensuring compatibility with most standing pilot gas valves

Trane VAL8991 Valve 322057-301 000-hour or annual service intervalThe 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