Watts 0212012|WW0212012 - ETRA-50

This 13 gallon pressurized expansion tank is designed to absorb the expansion forces and control the pressure in heating and cooling systems. It is an ASME Section VIII removable bladder type precharged expansion tank. The excess water is contained in the heavy duty replaceable butyl bladder preventing tank corrosion and waterlogging problems. Maximum pressure is 125 psi (8.5 bar).