For use with closed hydronic heating and cooling systemsFactory pre-charged to 12 psig
Pre-charge should be adjusted to equal minimum operating pressure at tank location
Accepts expanded water as system temperature rises to reduce pressure build-up.
System connection sets the point of no pressure change
Water-tight reservoir for expanded water
Sealed air cushion - factory pre-charged and 100% tested
Deep-drawn steel tank
Air stem for pre-charge adjustment