Watts Series LLL100XL have extended inlet shanks for use with the new generation of water heaters containing extra thick insulation. These valves eliminate the use of an extension nipple required with standard shank length models. The combined 2-in-1 Temperature & Pressure relief valve provides the least expensive and proven means for protection against both excessive temperature and pressure emergency conditions. Watts self-closing combination T&P relief valves are design certified, rated and listed by CSA to the requirements of ANSI Z21.22; and by the National Board to the requirements of ASME Section IV. They provide fully automatic temperature and pressure relief protection for hot water storage tanks and heaters up to 105,000 BTU/Hr. Male inlet and female outlet.; ; Brand Name: Watts Sub Brand: LLL100XL End 1 Size: 3/4 in. End 1 Type: MNPT Body Material: Bronze Product Type: Temperature and Pressure Relief Valve Number in Package: 1 pc Packaging Type: Boxed Maximum Pressure: 150 psi Lead Content: Leaded Maximum Temperature: 210 �F Adjustable: No Watts does not authorize third-party or marketplace selling of their products on sites like Amazon, Walmart, eBay, etc. Only online selling permissible is through websites owned and operated by customer.