Connection diameter: R1/4; Compatible tube outer diameter: D 0.2 inches (6 mm); Fluid used: Air; Usable temperature range: 0 - 60 °C (unfreezed); Usable pressure range: -0.1 - 0.9 MPa; Minimum operating pressure (pressure starting to the secondary side when the air is marked from the free flow direction): 0.01 MPa minimum check pressure: 0.02 MPa. a. Material/finish. Body: Brass + Electrolytic Nickel Plating; Seal Rubber: NBR ; Country of Origin: Japan; Code Number: 809-5921