A safety cap for a pressurised gas storage vessel is disclosed comprising a valve that is movable between: (i) a first position in which an entrance port and anti-recoil apertures are in fluid communication such that gas is able to flow out of the safety cap through the anti-recoil apertures; and (ii) a second position in which the gas is unable to exit the safety cap through the anti-recoil apertures and in which the entrance port is in fluid communication with an exit port such that gas is able to flow from the entrance port, through the exit port and out of the safety cap.

There is disclosed a mechanism for detecting that a valve coupled to a pressurized container is fully installed into a nose piece of an actuator for actuating the valve.

A piping plug includes a housing including a through-hole, and a filter device that is inserted into the through-hole and provided in the housing, the filter device includes a holder including a holder passage having a first opening and a second opening, and a filter provided in the holder so as to cover the first opening, the first opening is located on an outer circumferential face of the holder, the second opening is located at one end of the holder, and the holder is cantilever-supported by the housing in one end side part of the holder such that a clearance is left around the outer circumferential face.

Embodiments of a polyethylene (PE) pipe servicing system of this disclosure may include a fusible PE fitting (F) providing a branch connection to a PE pipeline section or run (P), a valve (10) connected to the fitting and including quick connect/disconnect means, and a machine connectable to the valve including complementary quick connect/disconnect means. The quick connect means provide for full scope of operation, including cleaning, fusion, cool down, hot tap, plugging, and completion. No squeezing is used. The quick connect/disconnect means may include a first portion 20 of a cam profile and a second portion 40 of the cam profile complementary to that of the first. The machine may be a drilling or hot tapping machine (30T), a plugging machine (30P), or a completion machine (30C), and their associated tools. The valve and machine are more lightweight and faster and easier to use than the prior art.

A compressed gas storage system that includes a pressure vessel. The pressure vessel includes a first vessel portion and a second vessel portion in fluid communication with the first vessel portion. The pressure vessel includes a third vessel portion in fluid communication with the second vessel portion. The compressed gas storage system includes a first valve positioned between the first vessel portion and the second vessel portion and a second valve positioned between the second vessel portion and the third vessel portion. The first valve allows and impedes fluid flow between the first and the second vessel portions. The second valve allows and impedes fluid flow between the second and the third vessel portions.

Method for producing a microfoam suitable for use in scleropathy of blood vessels by introducing a physiologically acceptable blood-dispersible gas into a container holding an aqueous sclerosant liquid and releasing the mixture of blood-dispersible gas and sclerosant liquid such that, upon release of the mixture, the components of the mixture interact to form a microfoam. The container is provided with a steam-sterilizable aerosol valve having a valve body of polymeric material having an HDT (heat deflection temperature) at 1.8 MPa stress in the range of 200-275 C.

Connection adapter for docking and undocking a maintenance station to a service valve of a third-party system in which a working fluid circulates in a closed circuit with a connection via which for filling working fluid under pressure can be fed from the maintenance station into the connection adapter or via which working fluid under pressure can be discharged, with a dead space which is ventilated via a venting path, the connection adapter includes a servo space in which a servo piston for opening and closing the venting path is accommodated, and a valve spindle that operates a valve element, and a hold-down device for opening a spring valve insert forming the service valve, which is designed and arranged in such a way that it only opens the spring valve insert after the servo piston has reached a position closing the ventilation path.