Why use 321 Stainless Steel instead of 304

It is designed to be paired with Emerson AM or ASC2 series coils

Direct OEM Fit: Drop-in replacement for A95-30-11-84 reduces installation downtime and ensures proper mounting footprint

significant system pressure fluctuations during the startup cycle

Watts 0121406 Valve Els PW 29614 Why use 321 Stainless SteelThe Watts 0121406 (Model 40L 3 150) is a high capacity automatic temperature and pressure relief valve designed specifically for large scale water heating systems and storage tanks. Featuring a 3 4 inch NPT male inlet and NPT female outlet, this Series 40L valve is engineered with a bronze body and a 3 inch extended thermostat reach to ensure accurate sensing in high volume applications. It provides critical protection with a pressure relief setting