CSA design certified per ANSI Z21.22 Relief Valves for Hot Water Supply Systems. Bronze body, stainless steel spring, furnished with silicone seat disc and EP diaphragm, as well as a test lever. Standard factory setting is 150 psi. Temperature relief setting is 210°F (99°C). All FVX Series valves through 1-1/4" have coated thermal elements that protect against mineral build-up. The 1-1/2" and 2" valves have stainless steel elements. Available with male or female inlet connections. Female outlet connections.