ISO 7241 Series A
ISO A Quick Couplings
ISO 7241 is a standard for ball-lock hydraulic quick-release couplings. The standard specifies two series of hydraulic quick couplings. ISO 7241 A series hydraulic quick-release couplings are interchangeable in many applications, especially in agricultural and forestry machinery.
ISO 7241 Series B
ISO B Quick Couplings
ISO 7241 B series hydraulic quick coupling is another quick coupling in ISO 7241 standard. It is identical to ISO 7241 A in that they are both of ball-lock construction. In addition to the size difference, the B series hydraulic quick couplings are made of a thicker material. For the same size, the working pressure performance is better. Therefore, B series hydraulic quick release couplings are often used in better hydraulic equipment.
Agricultural Quick Couplings
ISO 5675 standard specifies the essential interface dimensions and the operating requirements for hydraulic couplers employed to transmit hydraulic power from agricultural tractors to agricultural machinery.
Flat Face Quick Couplings
ISO 16028 specifies the interface dimensions for interchangeability and specifies the performance requirements for the hydraulic, flush-face type, quick-action couplings for use at pressures of 20 MPa (200 bar) to 31,5 MPa (315 bar), depending upon the coupling size.
Screw-to-connect Quick Couplings
Usually for high pressure
Screw-to-connect quick-release couplings are often used in high-pressure hydraulic equipment or in equipment that is subjected to large vibrations. There are, of course, also some conventional hydraulic applications for safety reasons. In addition to hydraulic jacks, there are applications such as crawler cranes, slip form pavers, test benches, etc.
Other Quick Couplings
special usage or customized quick couplings
Some equipment manufacturers will request customized produced quick couplings to meet their special requirements on device design. The customized quick couplings will choose the materials for the special liquid, and design the connecting method or high flow, how working pressure requirements, connecting under pressure, etc.