An air valve connecting device includes a housing, a sliding member slidably engaged in the housing and having a pathway selectively aligning with a passage of the housing, a gasket attached to the sliding member for engaging with an inflation valve, a follower slidably engaged in the sliding member for engaging with the inflation valve, and an actuating knob rotatably attached to the sliding member, the actuating knob is rotatable relative to the sliding member to an angular position where the follower is anchored to the sliding member, and the actuating knob is rotatable relative to the sliding member to another angular position where the follower is released from the sliding member.

A press fitting device (1) for establishing a fluid-tight connection with at least one pipe section (10), the press fitting device being configured to generate a sound when a gaseous fluid flows along or through the press fitting device a) in a pre-press fit condition, in which a connection with the at least one pipe section is established and before the connection is press-fit; and/or b) in a press fit condition, in which the connection is press-fit, if the connection is not fluid-tight.

The present invention is directed to a system and method for a highly efficient manifold that connects to a pressure measurement apparatus for an RV propane system wherein the manifold is utilized for a quick connection without removal of a gas line whereby the manifold has quick coupling fittings or adapters to form a connection to the gas system and is utilized for a quick connection for a liquid petroleum timed pressure drop test, lock up test, and regulator adjustment without the need for tying into gas lines with hoses.

The present invention is directed to a system and method for a highly efficient manifold that connects to a pressure measurement apparatus for an RV propane system wherein the manifold is utilized for a quick connection without removal of a gas line whereby the manifold has quick coupling fittings or adapters to form a connection to the gas system and is utilized for a quick connection for a liquid petroleum timed pressure drop test, lock up test, and regulator adjustment without the need for tying into gas lines with hoses.

Male or female fluid coupling element and fluid coupling including such an element This coupling element has a body and a nozzle. The body delimits a housing for partially receiving the nozzle. The nozzle has a tubular part and a flange received in the housing. Two sealing barriers formed by at least one sealing joint are interposed between a rear surface of the flange and a front face of the body, between a front surface of the flange and a rear face of the body, respectively. A plug caps an inner conduit. Portions of the inner conduit communicate through at least one passage opening into an inner volume of the nozzle, forward of the plug, and on an outer peripheral surface of the flange. An inner chamber is separated from the inner conduit by the body, the flange, the plug and the first sealing barrier.

Male or female fluid coupling element and fluid coupling including such an element This coupling element has a body and a nozzle. The body delimits a housing for partially receiving the nozzle. The nozzle has a tubular part and a flange received in the housing. Two sealing barriers formed by at least one sealing joint are interposed between a rear surface of the flange and a front face of the body, between a front surface of the flange and a rear face of the body, respectively. A plug caps an inner conduit. Portions of the inner conduit communicate through at least one passage opening into an inner volume of the nozzle, forward of the plug, and on an outer peripheral surface of the flange. An inner chamber is separated from the inner conduit by the body, the flange, the plug and the first sealing barrier.

A medium connector including a passage configured to allow for the flow of medium, and a multi-portion engagement surface positioned about the passage. The multi-portion engagement surface includes a first surface portion, and a second surface portion. The first surface portion is configured to provide an interference fit with a corresponding sealing surface of a mating connector. The second surface portion is configured to provide a clearance fit with the corresponding sealing surface of the mating connector. The ratio of the first surface portion and the second surface portion is selected to regulate an engagement force between the medium connector and the mating connector.

A medium connector including a passage configured to allow for the flow of medium, and a multi-portion engagement surface positioned about the passage. The multi-portion engagement surface includes a first surface portion, and a second surface portion. The first surface portion is configured to provide an interference fit with a corresponding sealing surface of a mating connector. The second surface portion is configured to provide a clearance fit with the corresponding sealing surface of the mating connector. The ratio of the first surface portion and the second surface portion is selected to regulate an engagement force between the medium connector and the mating connector.

A collar for connecting ducting components is provided. The collar includes a tubular wall having a line end and a free end, an annular flange extending radially outwardly from the line end, and a plurality of retaining tabs extending outwardly from the free end. A plurality of locking members are provided at the line end. The locking members are configured to releasably secure the flange to an adjacent member.

The present invention provides a press-fitting pipe connector with a toothed ring, including a pipe joint, a sealing ring, a toothed clamping ring, a bushing and a pipe. The pipe joint is a “-”-like round pipe with equal wall thickness, the sealing ring, the toothed clamping ring, and the bushing are assembled in an inner cavity of the pipe joint, a fitting end of the pipe joint is run through inner cavities of the bushing, the toothed clamping ring and the sealing ring in sequence, a radial pressure is applied using a press-fitting tool along an outer diameter of the pipe joint, and both ends of the pipe joint are squeezed from a pipe shape into a neck shape under the action of the pressure. Therefore, the strength index and the safety requirements of the gas, fire-fighting and heat supply pipes of the high-rise buildings can be satisfied.