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.

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 quick connector includes a valve body and a rotatable ring fitting over the valve body. The rotatable ring is rotatable with respect to the valve body. When a sealing member of the rotatable ring is rotated to a full open position, an exit end and an entrance end of the valve body are both encompassed by an opening of the sealing member and communicating with each other. When the sealing member is rotated from the full open position to a full close position, one of the exit end and the entrance end is moved out of the opening and blocked by the sealing member, so that the entrance end and the exit end do not communicate with each other.

The invention refers to a quick released system for coupling (1) and drogue (2) assembly comprises a crown coupling connector (4) suitable for being fixed to the coupling (1) and comprising cavities (14); a plurality of balls (3) housed in the cavities (14) with an emerging part and radially movable; a crown drogue connector (5) suitable for being fixed to the drogue (2), configured to engage and disengage the coupling connector (4) and comprising first recesses (26); and a crown locking ring (6) rotatable between a locked and a released position and comprising second recesses (31). The second recesses (31) are arranged in correspondence with the first recesses (26) when the system is in a released position and, the locking ring (6) in contact with the balls (3) and the first recesses (26) engaged with the emerging part of the balls (3) when the system is in a locked position.

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.

A female pipe coupling member includes a coupling body and a sleeve 138 disposed around a cylindrical peripheral wall portion of the coupling body. The sleeve has a locking element receiving hole extending therethrough from an inner peripheral surface to an outer peripheral surface. When the sleeve is in a locking element releasing position where the locking element receiving hole radially aligns with a locking element, the locking element is received in the locking element receiving hole to assume an unlocking position. The locking element receiving hole is configured to block the locking element from passing therethrough radially outward and thus holds the locking element in the unlocking position from outside.

A connector assembly has a main body, a valve, a spring, a quick connecting device, and a seal. The valve is moveably mounted in the main body and has an adaptor, a valve body, and a sealing assembly. The valve body is spaced from the adaptor and has a closed end away from the adaptor, an open end, and multiple through holes radially defined in the valve body. The seal is clamped between the valve body and the adaptor to connect the valve body with the adaptor and has a tubular sleeve and a clamped flange. The tubular sleeve has an end. The clamped flange is radially formed around and protrudes from the end of the sleeve and clamped between the open end of the valve body and the adaptor.

Herein is a coupler and a clean connection device having the same, which can automate a series of operations for connecting and disconnecting a male coupler to and from a female coupler, clean and dry a wetted portion, drain residual liquid of chemicals together with cleaning water without external leakage in safety when the coupler is separated, and clean and dry the wetted surface before connection and after separation, thereby enabling a clean connection.

A connector has at least one engagement ball that is movable between an engagement position and a disengagement position. A movement of an engagement ball operating part of the connector relative to an inner housing of the connector can force the at least one engagement ball from the engagement position into the disengagement position. The at least one engagement ball is biased in the engagement position by an elastic element via the engagement ball operating part. The connector further comprises an outer housing of the connector with a catch that when the outer housing is operated engages with a counter catch of the engagement ball operating part to move the engagement ball operating part, so that the engagement ball operating part forces the at least one engagement ball from the engagement position into the disengagement position.