Amtrol St-5 Spec Sheet - Web expansion tank t & p valve water heater deep drawn construction deep drawing the domes doubles the strength of the steel. Integral diaphragm design features a. 50 psig (3.5 bar) stand models: 200º f (93º c) max. 40 psig (2.8 bar) performance. Requires half the welds vs. Inspect for shipping damage and notify freight carrier. Inspect for shipping damage and notify freight carrier or store where purchased.
40 psig (2.8 bar) performance. 50 psig (3.5 bar) stand models: 200º f (93º c) max. Integral diaphragm design features a. Web expansion tank t & p valve water heater deep drawn construction deep drawing the domes doubles the strength of the steel. Inspect for shipping damage and notify freight carrier or store where purchased. Requires half the welds vs. Inspect for shipping damage and notify freight carrier.