Dixon Valve steel ISO-A interchange hydraulic fitting coupler. Machined components are manufactured using solid steel bar stock. Stainless steel balls, retaining rings, and springs maximize corrosion resistance and extend service life. Steel componentry is plated using ROHS Compliant Trivalent Chrome. Steel coupler sleeves are hardened to resist deformation and maximize service life. 3.88-inches length.4000 pounds-per-square-inch pressure. Nitrile (Buna-N) seals are standard, providing a temperature range of -40 degree F to +250 degree F. Couplers have a PTFE Anti-Extrusion ring. Valve seals are crimped in place to maintain integrity during excessive flow conditions and pressurized connection.