Cast pipe fiting size: 1/2" NPT Male Union pipe fitting type: threaded; item shape: coupling (union for connecting and extending two male pipes) Cast pipe union fittings are components used for connecting, terminating, controlling flow, and changing the direction of pipe Pipe fitting Material: stainless steel 304, (brass is too flimsy and will broke in use), which can be connected to copper, brass, plastic, aluminum, and welded steel Union fitting Specification: upper temperature rating: working temperature: -20-245℉ / -29-120℃; working pressure: 0-360 PSI; pressure rating : class 150 Male Cast Pipe Fittings Union, NPT Stainless Steel 304 Fitting