Stem Adapter Basic Material Plastic Body Material Acetal Copolymer Connection Type Tube x MNPT Pipe Size 1/4 In. Stem OD 3/8 In. Max Pressure 150 psi Color White Standards NSF-61 For Drinking Water NSF-51 For Food And FDA For Food And Beverage Temp Range -14 Degrees to 167 Degrees F for Air and 33 Degrees to 140 Degrees F for Water Package Quantity 10