Tube to Hose Adapter Fitting Side A Connection Type Tube Stem Fitting Side B Connection Type Barbed Fitting Side A Tube Inner Diameter 1/4 in Fitting Side B Tube Inner Diameter 1/4 in Barb Style Standard Fitting Material Acetal Specific Fitting Shape Straight Adapter Application Air Inert Gases Potable Water Maximum Operating Pressure 232 psi Maximum Operating Temperature 65 Degrees C Standards NSF/ANSI 51 NSF/ANSI 61 Color Gray Minimum Operating Temperature 20 Degrees C