quick couplings, quick couplers

Quick coupling with an automatic shut-off valve built in the socket is widely used to connect air and low pressure fluid lines. Quick connect coupling provides connections in systems that involve the flow of air, water, oil, or gas. The spring loaded sleeve on the coupler must be manually retracted in order to connect or disconnect the nipple. Quick couplings are indispensable in providing connections in systems that involve the flow of air, water, oil or gas.