Carbon Steel Hydraulic Quick Release Coupling ISO 7241-A intnerchange Hydraulic Quick coupling Features: *Popet valves available to prevent uncoupled leakage. *Ball valves available for rugged dependability in heacy-duty hydraulic applications,within rated working pressure. *Critical parts are induction hardened for durability. *Dependable ball-locking mechanism holds the mating halves together. *Socket and plug are precision machined from solid bar stock. *This Series coupling interchange with couplings meeting ISO 7241-1,Series A Interchange Standard Parker 6600 Perfecting K Faster ANV Aeroquip FD 56 Snap Tite 61 Dnp PAVX Safeway S56 Tomco A5600 Stucchi BIR Applications: This Series brings to the industry a proven sesing for use on construction equipment,forestry equipment ,agricultural machinery,oil tools,steel maill machinery ,and other demanding hydraulic hydraulic applications.