Reducing Coupling with Stop Application Air Potable Water Fitting Side A Connection Type Cup Fitting Side B Connection Type Cup Fitting Side A Copper Tube Size 1 1/4 in Fitting Side B Copper Tube Size 1 1/4 in Fitting Material Wrot Copper Fitting Side A Tube Outer Diameter 1 3/8 in Fitting Side B Tube Outer Diameter 1 3/8 in Maximum Operating Pressure 5 psi Maximum Operating Temperature 400 Degrees F Specific Fitting Shape Straight Reducing Coupling