Adapter for connecting pipes or fittings of different typesMale National Pipe Taper (NPT) threads on one end and female NPT threads on the other for connecting pipes with different endsBrass for corrosion resistance, ductility at high temperatures, and low magnetic permeabilityOperating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F)Meets specifications ASTM B584 and ASME/ANSI B16 for quality assurance