Sporlan 903031P Pressure Control 320788-702 the ZP3-HPS-ESP-KIT includes auto changeover

the ZP3-HPS-ESP-KIT includes auto changeover logic and first call priority with time-sharing to ensure balanced comfort across all zones

preventing nuisance calls and water damage

the SP9013E triggers at a 150 PSI pressure setting or a 210°F temperature threshold

and Trane IGN34

eliminating the loose fitment common with universal "one-size-fits-all" heaters

Sporlan 903031P Pressure Control 320788-702 the ZP3-HPS-ESP-KIT includes auto changeoverThe Sporlan 903031P Pressure Control Valve, also identified as the Parker Sporlan LAC 4 100, is a high performance low ambient head pressure control designed for small capacity refrigeration and air conditioning systems. This three way modulating valve maintains stable liquid line pressure by restricting refrigerant flow from the condenser while simultaneously bypassing hot gas directly to the receiver during low outdoor temperatures. By effectively