Reducing Adapter, Application Air, Non-Potable Water, Fitting Side A Connection Type FTG, Fitting Side B Connection Type FNPT, Fitting Side A Copper Tube Size 3/4 in, Fitting Material Cast Bronze, Fitting Side A Tube Outer Diameter 7/8 in, Maximum Operating Pressure 466 psi @ 200 Degrees F, Maximum Operating Temperature 400 Degrees F, Specific Fitting Shape Straight Adapter, Standards ASME B16.18, ASTM B584 Alloy C84400, ISO 9001, Material Grade C84400, Minimum Operating Temperature 20 Degrees F