Screw coupling
A screw coupling is a connection via a screw connection that is primarily used in hydraulics , but also in other areas of fluid technology . However, the screw connection often only represents a part of the screw coupling. In many cases, both halves ( plug and socket ) are each equipped with a check valve .
If the check valves are designed as ball valves, for example, the ball from the ball valve of the plug and the ball from the ball valve of the socket are mutually touched and pressed in in the coupled state. This opens the check valves on both coupling halves and in this way allows the fluid to flow through. Conical valve seat elements with a stump are of course just as conceivable in the check valves as balls.
A screw coupling can withstand higher pressure and stronger impulses than a plug coupling . However, the production is expensive, the coupling is more complex.
Inch dimensions are common for the screw connection .
The screw coupling is a type class of quick- release couplings . The requirement criteria for hydraulic quick-release couplings are low air inclusions during the coupling process and a leak-free connection.