Cash Acme NCLX Combination Temperature and Pressure Relief Valves are designed for the protection of water heaters and storage tanks. Cash Acme NCLX Valves are designed to meet ANSI Z21.22/CSA 4.4 and ASME Boiler Code Section IV in most configurations and are ideal for all domestic water heater applications. Cash Acme NCLX Valves are completely automatic and reseat after either temperature or pressure relief. They are offered in 1/2 and 3/4 in sizes with male inlets and female outlets. The NCLX Valve incorporates an innovative ''white coat'' thermal element coating; an inert covering that provides effective isolation from mineral deposits (liming) and galvanic corrosion, offering many years of dependable safety protection. The NCLX-5 model provides the standard length body and thermal element. Five models of the 3/4 in size are available with extended length bodies (NCLX-5S, NCLX-5L, NCLX-5LX, NCLX-LS and NCLX-A) for use with super-insulated water heaters. The 3/4 in NCLX-8 model is available for applications where an extended thermal element is required, and the NCLX-1 is available for applications where a reduced length thermal element is required. Cash Acme NCLX Valves come with standard factory settings of 150 psi for pressure relief and 210 deg F for temperature relief. Most models are also available in a 125 psi factory setting. A 75 psi and 175 psi factory setting is also offered for the 3/4 in NCLX-1 and 3/4 in NCLX-5. The 3/4 in NCLX-5, NCLX-5LX, and NCLX-A are also available with a factory temperature relief setting of 180 deg F (combined with factory pressure setting of 100 psi). The NCLX Series Relief Valves feature a cast bronze body, brass and stainless steel internal parts, silicone seat disc, and stainless steel pressure spring.