This Dixon 4HTO series steel flush face push-to-connect hydraulic quick connect coupler has an SAE/ORB connection end, and connects to a flush face hydraulic quick connect plug to minimize fluid loss. The SAE/ORB connection provides lower fluid leakage at high pressure levels. Steel provides better weldability and greater rust resistance than wrought iron. This automatic coupler has a push-to-connect operation, shuts off when disconnected, and has a sleeve lock to guard against accidental disconnection. This fitting's maximum working pressure (MWP) is 4,250 pounds per square inch (psi) (289.12 bar). This coupler conforms to the International Organization for Standardization (ISO) 16028 specifications for hydraulic fluid power, flush-face type, quick-action couplings. It is used for hydraulic applications in industrial operations.SpecificationsFitting-end connectionAutomatic couplerHose-end connectionSAE/ORBValveFlush faceMaterialSteelMaximum working pressure4,250 psi (289.12 bar)SpecificationsISO 16028Hose fittings connect, control, change the direction of, and terminate the flow in piping and hose systems. They are made of brass, stainless steel, galvanized steel, and other materials that resist corrosion, pressure, and wear. Hose fittings have various types of connections, including threaded, barbed, push-to-connect, dry disconnect, and others including those based on internationally-accepted specifications. Hose fittings are used in systems such as air compressors, automatic manufacturing operations, aircraft controls, and tire installation in industries including agriculture, mining, road construction, firefighting, and aviation.Dixon Valve & Coupling Company manufactures pipe and hose fittings and accessories. The company, founded in 1916, is based in Chestertown, Maryland.