Features: * AGA certified ASME rated 3/4-in. MIP inlet x 3/4-in. FIP outlet with test lever * Cast bronze body * Brass internal parts * Silicone seat disc * Stainless steel spring * Thermoplastic coated extension thermal element * Temperature relief setting is 210 degrees F * 150 pound pressure * BTU rating: 105000 to 500000 BTU/Hr * Stem length: 8 inches What"s In The Box: * Watts 100XL-8-150 150-Lb. Auto Relief Valve