Importance

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Abstract

A quick-connect coupling for pressurized fluid lines includes a male element and a female element whose connecting ends are each closed off by valves. Each valve comprises a sealing member which engages with the sealing member of the other valve during connection. A return spring pushes the sealing member against a seat and an abutment limits the opening stroke of the sealing member. The abutment of the element under pressure is fixed and positioned in such a way that the sealing member engages with the abutment when the male and female elements are connected. The other abutment is mounted in the other element in a sliding manner and includes first and second sliding sleeves. The front end of a second of the sleeves forms a valve sealing member and includes holes located directly behind the sealing member enabling fluid to flow through the body. The rear end of the second sleeve is shaped for engagement with a front end surface of a first of the sleeves. The coupling furthermore includes means for locking and returning the sliding abutment to the forward position, which permits the rearward movement of the sliding abutment during connection of the male and female elements and the locking of the sliding abutment into a forward position once such connection is complete.

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First Claim