A male joint includes a male joint main body and a valve element provided coaxially with a central axis of the male joint main body. The valve element includes a shaft portion and a valve portion coaxially provided at a tip end of the shaft portion. The valve portion has a first surface intersecting with the central axis and a second surface that is connected to an outer edge of the first surface and extends along the central axis from the first surface to a base end at a base end portion. The valve portion further comprising a groove having an annular shape centered on the central axis at a side portion and a deformation portion on a base end side of the groove.

Disclosed herein are embodiments of a connector system for releasably connecting together tubes, for example medical tubing, and methods of making and using such a connector system, whereby the connector system includes a female coupler having a first passageway, a male coupler having a second passageway, a catch movably coupled to the female coupler, and a catch-receiving element coupled to the male coupler. The connector system further includes a release element movably coupled to the female coupler, whereby travel of the release element along or over a female coupler outer surface of the female coupler disengages the catch from the catch-receiving element to achieve a disconnected condition of the connector system. Further disclosed herein are embodiments of a connector system for releasably connecting together tubes, whereby the connector system includes at least one valve biased by a valve-biasing member disposed external to or outside of the fluid flow path.

Disclosed herein are embodiments of a connector system for releasably connecting together tubes, for example medical tubing, and methods of making and using such a connector system, whereby the connector system includes a female coupler having a first passageway, a male coupler having a second passageway, a catch movably coupled to the female coupler, and a catch-receiving element coupled to the male coupler. The connector system further includes a release element movably coupled to the female coupler, whereby travel of the release element along or over a female coupler outer surface of the female coupler disengages the catch from the catch-receiving element to achieve a disconnected condition of the connector system. Further disclosed herein are embodiments of a connector system for releasably connecting together tubes, whereby the connector system includes at least one valve biased by a valve-biasing member disposed external to or outside of the fluid flow path.

This quick coupling (R) element (100) comprises a tubular body (102), defining an inner channel (C100) for the passage of a pressurized fluid and a longitudinal axis (X100), means (104, 116, 124) for closing off the inner channel on the side of a front face (108) and a relief member (124) of the inner channel (C100), movable between a first position, in which it closes off a relief passage connecting the inner channel to the outside of the body, and a second forward position, in which it does not close off this relief passage. The relief member is a ring (124) that is part of the means for closing off the inner channel and that is mounted movable between its two positions around a central member (116), which is also part of the closing off means, and inside a peripheral part (104), a first surface of the relief ring is part of the front face (108). The relief ring (124) defines, at least in part, the relief passage with the central member (116) or with the peripheral part (104). In its first position, the relief ring (124) bears sealably against the central member (116), over a first sealing circumference, and bears sealably against the peripheral part (104), over a second sealing circumference. A minimum diameter of the second sealing circumference is strictly larger than a maximum diameter of the first sealing circumference. The coupling element (100) comprises an elastic return member for returning the relief ring (124) toward its first position. This member pushes the relief ring back toward the inside of the tubular body (102) and/or toward the rear of the coupling element (100).

This quick coupling (R) element (100) comprises a tubular body (102), defining an inner channel (C100) for the passage of a pressurized fluid and a longitudinal axis (X100), means (104, 116, 124) for closing off the inner channel on the side of a front face (108) and a relief member (124) of the inner channel (C100), movable between a first position, in which it closes off a relief passage connecting the inner channel to the outside of the body, and a second forward position, in which it does not close off this relief passage. The relief member is a ring (124) that is part of the means for closing off the inner channel and that is mounted movable between its two positions around a central member (116), which is also part of the closing off means, and inside a peripheral part (104), a first surface of the relief ring is part of the front face (108). The relief ring (124) defines, at least in part, the relief passage with the central member (116) or with the peripheral part (104). In its first position, the relief ring (124) bears sealably against the central member (116), over a first sealing circumference, and bears sealably against the peripheral part (104), over a second sealing circumference. A minimum diameter of the second sealing circumference is strictly larger than a maximum diameter of the first sealing circumference. The coupling element (100) comprises an elastic return member for returning the relief ring (124) toward its first position. This member pushes the relief ring back toward the inside of the tubular body (102) and/or toward the rear of the coupling element (100).

Disclosed herein are embodiments of a connector system for releasably connecting together tubes, for example medical tubing, and methods of making and using such a connector system, whereby the connector system includes a female coupler having a first passageway, a male coupler having a second passageway, a catch movably coupled to the female coupler, and a catch-receiving element coupled to the male coupler. The connector system further includes a release element movably coupled to the female coupler, whereby travel of the release element along or over a female coupler outer surface of the female coupler disengages the catch from the catch-receiving element to achieve a disconnected condition of the connector system. Further disclosed herein are embodiments of a connector system for releasably connecting together tubes, whereby the connector system includes at least one valve biased by a valve-biasing member disposed external to or outside of the fluid flow path.

Disclosed herein are embodiments of a connector system for releasably connecting together tubes, for example medical tubing, and methods of making and using such a connector system, whereby the connector system includes a female coupler having a first passageway, a male coupler having a second passageway, a catch movably coupled to the female coupler, and a catch-receiving element coupled to the male coupler. The connector system further includes a release element movably coupled to the female coupler, whereby travel of the release element along or over a female coupler outer surface of the female coupler disengages the catch from the catch-receiving element to achieve a disconnected condition of the connector system. Further disclosed herein are embodiments of a connector system for releasably connecting together tubes, whereby the connector system includes at least one valve biased by a valve-biasing member disposed external to or outside of the fluid flow path.

An emergency detachable pipe coupling configured to decouple a female coupling member and a male coupling member which are coupled together when an external force makes the male coupling member tilted at a predetermined angle relative to a female coupling member. When the male coupling member is tilted, a pressing surface of the male coupling member presses a to-be-pressed surface of a locking element restraining member of the female coupling member to displace the locking element restraining member to a release position where a locking element becomes displaceable to an unlocking position.

An improved quick release coupling is provided. The quick release coupling enables higher fluid flow rates and lower pressure drops. The quick release coupling is configured to be a connection and disconnection under high pressure conditions on one or both of the male and the female sides of the coupling. The quick release coupling enables intentional manual disconnection as well as breakaway disconnection under high working pressures.

A slide valve set in a fluid passage and displaceable in a direction of a longitudinal axis of the fluid passage to open or close the fluid passage, the slide valve being simplified in structure and having a plurality of seal portions. The slide valve includes a cylindrical slide valve body set coaxially with the fluid passage, the slide valve body having an outer peripheral surface, an inner peripheral surface, and at least one through-hole extending through from the outer peripheral surface to the inner peripheral surface. The slide valve further includes a seal member having an annular outer seal portion located over the outer peripheral surface of the slide valve body, an annular inner seal portion located over the inner peripheral surface of the slide valve body, and a connecting portion located in the through-hole to connect together the outer seal portion and the inner seal portion.