What does "Open on Rise" mean in this application

you know that field-converting a Lennox gas furnace requires precise 1:1 OEM components to maintain manifold pressure specs

making it a drop-in solution for Miller

Its technical design places the seat above the drain to prevent sediment buildup

62 lbs and features a compact design for easy integration into the existing electrical cabinet of the outdoor condenser

Sporlan 4167-00 Repair Kit R-22 What does "Open on Rise"The Sporlan 4167 00 Repair Kit is a field essential service component designed for high precision maintenance of Sporlan thermostatic expansion valves (TXV). When dealing with erratic superheat readings or hunting valves in commercial refrigeration or industrial HVAC applications, a full rebuild is often the preferred alternative to entire valve replacement. This OEM refrigerant valve rebuild kit includes critical internal componentssuch as the pin