Reducing Union Basic Material Metal Body Material 316 Stainless Steel Connection Type A-LOK(r) x A-LOK(r) Tube Size 1 in x 1/2 In. Hex Size 1-3/8 In. Temp Range -425 Degrees to 1200 Degrees F Standards ASME-SA-479 TYPE 316-SS BS970 316-S31 DIN 4401 ASTM A276 Type 316