The present invention relates broadly to a fluid coupling assembly (10) comprising a fluid nozzle sub-assembly (12) arranged to releasably couple to a fluid receiver sub-assembly (14). The fluid nozzle sub-assembly (12) includes a nozzle assembly body (16) defining a pressurised and upstream fluid passageway (18) having a fluid discharge opening (20), and a sleeve (22) slidably mounted to the nozzle body (16) and arranged on sliding movement for opening of the fluid discharge opening (20). The fluid receiver sub-assembly (14) includes a receiver body (26) defining a downstream fluid passageway (28), a hydraulically-actuated poppet valve (30) mounted within the receiver body (26), and a receiver poppet valve (48) including a receiver poppet (54) mounted within the receiver body (26). On coupling of the nozzle sub-assembly (12) to the receiver sub-assembly (14), the following steps occur: 1. the receiver body (26) abuts the sleeve (22) displacing it axially relative to the nozzle body (16) exposing and thus opening the fluid discharge opening (20) permitting fluid to flow through the upstream fluid passageway (18); 2. the fluid flowing through the upstream fluid passageway (18) enters the downstream fluid passageway (28) hydraulically actuating the hydraulically-actuated poppet valve (30) to open it wherein the fluid flows through the downstream fluid passageway (28) exiting the receiver sub-assembly (14).

The present invention provides a socket compatible with multiple types of plugs having front end portions varying in length and a pipe connector having this socket. The socket 10 of the present invention mainly includes a base portion 18, first steel balls 22 and second steel balls 24 housed in housing holes of the base portion 18, an outer support portion 26 supporting the first steel balls 22 and the like from the outer side, and an inner support portion 25 supporting the first steel balls 22 and the like from the inner side. The socket 10 includes first housing holes 50 in which the first steel balls 22 are housed and second housing holes 52 in which the second steel balls 24 are housed and which are longer than the first housing holes 50 in an axial direction.

The present invention provides a socket compatible with multiple types of plugs having front end portions varying in length and a pipe connector having this socket. The socket 10 of the present invention mainly includes a base portion 18, first steel balls 22 and second steel balls 24 housed in housing holes of the base portion 18, an outer support portion 26 supporting the first steel balls 22 and the like from the outer side, and an inner support portion 25 supporting the first steel balls 22 and the like from the inner side. The socket 10 includes first housing holes 50 in which the first steel balls 22 are housed and second housing holes 52 in which the second steel balls 24 are housed and which are longer than the first housing holes 50 in an axial direction.

The present disclosure relates to coupling device and valve assembly for use with accessing the water flow in a fire hydrant. Specifically, the present disclosure relates to various coupling device and valve assemblies which are used as a quick connect and disconnect of a fire hose to the hydrant. Additionally, it is advantageous that the coupling device and valve assemblies also provide a self-sealing valve feature, which immediately stops the flow of water when the hose is disconnected from the hydrant. An advantage provided by the present coupling device and valve assemblies is that should a primary valve on a hydrant become unusable, the fire hose can be quickly disconnected from that hydrant and reconnected to a second hydrant without requiring a shutdown of the water grid feeding the disconnected hydrant.

The present disclosure relates to coupling device and valve assembly for use with accessing the water flow in a fire hydrant. Specifically, the present disclosure relates to various coupling device and valve assemblies which are used as a quick connect and disconnect of a fire hose to the hydrant. Additionally, it is advantageous that the coupling device and valve assemblies also provide a self-sealing valve feature, which immediately stops the flow of water when the hose is disconnected from the hydrant. An advantage provided by the present coupling device and valve assemblies is that should a primary valve on a hydrant become unusable, the fire hose can be quickly disconnected from that hydrant and reconnected to a second hydrant without requiring a shutdown of the water grid feeding the disconnected hydrant.

A high-velocity low-pressure cooling system (100), especially suited for data center applications, includes an air coolant loop (102), a non-air coolant loop (104) and a cooler unit (126) for heat transfer between the loops (102 and 104). The air loop (102) is used to chill ambient air that is blown across heat transfer surfaces of equipment mounted in data center racks (110). In this manner, effective cooling is provided using a coolant that is benign in data center environments.

A quick coupler assembly includes inlet and outer valve parts axially spaced inside a housing unit. The inlet valve part has an inlet chamber. A quick release locking sleeve is sleeved on the housing unit to control locking elements for engaging/disengaging a pipe connector inserted into the outlet valve part. An inner slide sleeve sleeves around the inlet valve part in the housing unit and has a control chamber around the inlet valve part to communicate the inlet chamber through radial passage holes. An outer operating sleeve extends around the housing unit to move the inner slide sleeve relative to the inlet valve part, and is able to abut and immobilize the quick release locking sleeve during passage of fluid.

A quick coupler assembly includes inlet and outer valve parts axially spaced inside a housing unit. The inlet valve part has an inlet chamber. A quick release locking sleeve is sleeved on the housing unit to control locking elements for engaging/disengaging a pipe connector inserted into the outlet valve part. An inner slide sleeve sleeves around the inlet valve part in the housing unit and has a control chamber around the inlet valve part to communicate the inlet chamber through radial passage holes. An outer operating sleeve extends around the housing unit to move the inner slide sleeve relative to the inlet valve part, and is able to abut and immobilize the quick release locking sleeve during passage of fluid.

An example wire ring is configured as a partial polygon. The partial polygon has a plurality of curved sections interposed between a plurality of straight sections. The wire ring is configured to contact a base of an annular groove of an external component of a valve at multiple contact points. The wire ring is also configured to contact a respective base of a respective annular groove of an internal component of the valve disposed, at least partially, within the external component at multiple respective contact points.

An example wire ring is configured as a partial polygon. The partial polygon has a plurality of curved sections interposed between a plurality of straight sections. The wire ring is configured to contact a base of an annular groove of an external component of a valve at multiple contact points. The wire ring is also configured to contact a respective base of a respective annular groove of an internal component of the valve disposed, at least partially, within the external component at multiple respective contact points.