Belimo A-22P-A09 Thermowell Refrigerant a failing internal check valve

a failing internal check valve can lead to damaging refrigerant migration and liquid slugging during the off-cycle

engineered to open the electrical circuit at 175°F and automatically reset when temperatures drop to 145°F

Does this vent work as an anti-vacuum device

this switch features heavy-duty diaphragm construction to withstand high-cycling environments common in residential and light commercial heating

NEMA 4 Rated Protection: Robust housing ensures long-term reliability in harsh environments and outdoor installations

Belimo A-22P-A09 Thermowell Refrigerant a failing internal check valveThe Belimo A 22P A09 is a high performance fabricated stainless steel thermowell engineered for precise temperature sensing in hydronic systems. Designed for field technicians who prioritize durability and accuracy, this 6 inch immersion sleeve features a 1 2" NPT external thread for seamless integration into standard pipe fittings. Its construction utilizes AISI 316L for the thread and hex components, while the immersion length is crafted from AISI