A quick connector includes a male base and a female base, wherein the male base has a first tube body, an annular clamping groove arranged outside the first tube body, a first flow channel axially penetrating through the first tube body, a plug body slidably arranged in the first flow channel, and an elastic member for pushing the plug body to close the first flow channel. The female base includes a second tube body, a second flow channel which axially penetrates through the second tube body and into which the first tube body is inserted, an annular fastener provided in the second flow channel, and a push rod fixed on the second flow channel and oriented towards the plug body.

A quick connector includes a male base and a female base, wherein the male base has a first tube body, an annular clamping groove arranged outside the first tube body, a first flow channel axially penetrating through the first tube body, a plug body slidably arranged in the first flow channel, and an elastic member for pushing the plug body to close the first flow channel. The female base includes a second tube body, a second flow channel which axially penetrates through the second tube body and into which the first tube body is inserted, an annular fastener provided in the second flow channel, and a push rod fixed on the second flow channel and oriented towards the plug body.

A coil spring is disposed in a fluid passage between a cylindrical body and a valve element to urge the valve element toward a closed position. The coil spring comprises a valve support portion supporting the valve element, a secured portion secured to an inner peripheral surface of the fluid passage, an expanding-contracting portion extending from the secured portion, and a connecting portion between the expanding-contracting portion and the valve support portion. The connecting portion comprises a first portion curved so as to pass radially outward of an end winding portion of the expanding-contracting portion, a second portion passing through the center of the valve support portion, a third portion extending curvedly so as to overlap the first portion, and a fourth portion extending to the valve support portion. When the coil spring is compressed, the valve support portion is supported to the expanding-contracting portion 54 through the connecting portion.

The present invention relates to a pressure resistance valve structure, which comprises a front valve seat body, a pressure resistance valve core body and a rear valve seat body. The pressure resistance valve core body is closed or released from the closed state relative to the front valve seat body, to control the export of liquid or gaseous fluids. The overall composition of the present invention is simple in structure, reducing the risk of component failure after long-term use, so as to achieve the effect of structural stability and good convenience of use.

A traveling service tool that is configured to removably attach to a fluid access port of a refrigerant system. The fluid access port can be the fluid access port described herein or an existing fluid access port. When used with the fluid access port described herein, the traveling service tool is configured to hold a removable core during processing, and ultimately install the core into the fluid access port at a suitable stage in the processing operations. In an embodiment, the traveling service tool remains attached to and travels with the refrigerant system for the refrigerant system to be processed at two or more separate fluid processing stations.

A mounting device facilitates connecting an Internet of Things (IoT) device, such as thermostatic radiator valve (TRV) and automatic temperature balanced actuator (ABA), to a hydronic heating/cooling system to control the temperature of a room by changing the flow of hot/cold water through radiator. The mounting devices includes a male section and a female section, which is attached to the IoT device. The mounting device may be installed in two stages. First, a male section is attached to a component of the hydronic heating/cooling system (for example, a valve or manifold) by threading the male section onto the component. Second, a female section, is positioned to male section and locked into place by rotating a rotary sleeve. The female section (with the IoT device) may be easily removed by rotating the rotary sleeve into an unlock position.

A mounting device facilitates connecting an Internet of Things (IoT) device, such as thermostatic radiator valve (TRV) and automatic temperature balanced actuator (ABA), to a hydronic heating/cooling system to control the temperature of a room by changing the flow of hot/cold water through radiator. The mounting devices includes a male section and a female section, which is attached to the IoT device. The mounting device may be installed in two stages. First, a male section is attached to a component of the hydronic heating/cooling system (for example, a valve or manifold) by threading the male section onto the component. Second, a female section, is positioned to male section and locked into place by rotating a rotary sleeve. The female section (with the IoT device) may be easily removed by rotating the rotary sleeve into an unlock position.

A male element (10) for a fluid connection comprises a male body (12) comprising a tubular extension (20) and a crown (22) fixed around the tubular extension and having at least one radial recess opening onto an inner face (44) and onto an outer face of the crown (22). The male element comprises an integral ring (16) mounted around the crown, and for each radial recess, a locking element (14), movable between an inner position and an outer position, the outward movement of which is limited by the ring. Each radial recess is delimited by an inner wall (52) forming part of the crown and extending around a radial central axis of the radial recess. The ring has at least one longitudinal slot, which passes radially through the ring, and comprises a resiliently deformable end portion (112). A free end of the end portion comprises at least one inner tooth which is engaged in an outer groove, recessed in the crown.

A male element (10) for a fluid connection comprises a male body (12) comprising a tubular extension (20) and a crown (22) fixed around the tubular extension and having at least one radial recess opening onto an inner face (44) and onto an outer face of the crown (22). The male element comprises an integral ring (16) mounted around the crown, and for each radial recess, a locking element (14), movable between an inner position and an outer position, the outward movement of which is limited by the ring. Each radial recess is delimited by an inner wall (52) forming part of the crown and extending around a radial central axis of the radial recess. The ring has at least one longitudinal slot, which passes radially through the ring, and comprises a resiliently deformable end portion (112). A free end of the end portion comprises at least one inner tooth which is engaged in an outer groove, recessed in the crown.

Provided is a liquid supply device including: a plug having a plug side liquid channel; and a socket having a socket side liquid channel. The plug has a groove having a fixing groove, the socket has a body having the socket side liquid channel, a gripping unit gripped by a robot, and a sleeve member configured to adjust a position of the body relative to the gripping unit, the tip of the body runs annularly about the socket axis and has lock balls, and the sleeve member switches a state between a connected state where the lock balls are secured in the fixing groove and a released state where the lock balls are not secured in the fixing groove.