Coupling Pipe Fitting Material Brass Pipe Size - Pipe Fitting 1/2 in x 1/8 in Fitting Connection Type FNPT Standards ASTM B62 ASME B16.15 ANSI B 1.20.1 Max Pressure 125 psi Outside Dia 1/2 in x 1/8 in Temp Range -20 Degrees to 400 Degrees F Compliance NSF61 and AB1953