Coupling Application Chilled Water Compressed Air Marine Potable Water Fitting Side A Connection Type Press-Fit Fitting Side B Connection Type Press-Fit Fitting Side A Copper Tube Size Not Applicable Fitting Side B Copper Tube Size Not Applicable Fitting Material Stainless Steel Fitting Side A Pipe Size 1 1/4 in Fitting Side B Pipe Size 1 1/4 in Material Grade 316 O-Ring Material EPDM Specific Fitting Shape Coupling Fitting Side A Tube Outer Diameter 1 1/4 in