northman
Member
on a water heater/expansion tank installation?
Looking at the Watts site to size an expansion tank, they show a vacuum relief valve installed at the water heater. What is the purpose? Is it necessary or are they just trying to sell parts?
Greg
Looking at the Watts site to size an expansion tank, they show a vacuum relief valve installed at the water heater. What is the purpose? Is it necessary or are they just trying to sell parts?
Greg