sealing the upper chamber from the flow path

Utilizing a heat pump reversing valve that meets exact manufacturer specifications is essential for maintaining the structural integrity of the sealed system and preventing compressor strain

ensuring the reliable pressure regulation required to prevent liquid slugging and evaporator freezing

thermal high-limit trips

Armstrong Fluid Technology 805209-000 Flange Gaskets 322838-752 sealing the upper chamber fromThe Armstrong Fluid Technology 805209 000 Flange Gaskets are precision engineered OEM replacement parts designed to maintain the peak efficiency of your hydronic pumping systems. Specifically developed for use with Armstrong S35 pumps and the wider Series S circulator line, these gaskets provide a critical, leak proof seal for 2" and 2 1 2" flange connections. Constructed from durable, high performance materials including high density composite