A duct stringer is disclosed and forms at least part of a duct with a closed cross-section which is adapted to transport fluid. The duct stringer has a duct wall and a female bayonet fitting in the duct wall. The female bayonet fitting is configured to engage with a male bayonet fitting on a fluid transporting conduit to connect the fluid transporting conduit with the duct. The present application also relates to an aircraft assembly comprising the duct stringer and the fluid transporting conduit.

A duct stringer is disclosed and forms at least part of a duct with a closed cross-section which is adapted to transport fluid. The duct stringer has a duct wall and a female bayonet fitting in the duct wall. The female bayonet fitting is configured to engage with a male bayonet fitting on a fluid transporting conduit to connect the fluid transporting conduit with the duct. The present application also relates to an aircraft assembly comprising the duct stringer and the fluid transporting conduit.

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.

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 coupling device having an integrated stopcock for placement in a flow connection between a first line and a second line includes a carrier body having a connection for the second line, a plug part having a connection for the first line, and a rotary part being rotatable by the plug part, disposed in the carrier body between the connections and having an opening. The two connections are connected for flow through the opening in a rotated end position of the rotary part. A plug-and-rotate lock is formed between the plug part and the carrier body. The plug part is detachably plugged into the rotary part and can be rotated in the carrier body together with the rotary part. A device for supplying a flowable substance from a container to a discharge point is also provided.

A coupling device having an integrated stopcock for placement in a flow connection between a first line and a second line includes a carrier body having a connection for the second line, a plug part having a connection for the first line, and a rotary part being rotatable by the plug part, disposed in the carrier body between the connections and having an opening. The two connections are connected for flow through the opening in a rotated end position of the rotary part. A plug-and-rotate lock is formed between the plug part and the carrier body. The plug part is detachably plugged into the rotary part and can be rotated in the carrier body together with the rotary part. A device for supplying a flowable substance from a container to a discharge point is also provided.

A gladhand assembly having a conduit for carrying a fluid and a port having a sidewall defining an interior region. The port also having a first opening in communication with an external environment and a second opening in communication with the conduit. The port includes a first recess in the interior region and disposed in the sidewall. There is a filter member including a sidewall and a first opening including a rim. The rim extends outwardly from the sidewall in a radial direction and is seated on the first recess in the sidewall of the port. There is a seal member configured to engage with and close the first opening in the port and the seal member includes a film having a first surface facing the external environment and a second surface facing the interior region of the port. The film includes a re-closable aperture.

A gladhand coupling that prevents inadvertent separation of the coupling halves without the need for additional structure or manipulation to connect and disconnect the halves. Each half is equipped with a lug having two spaced apart ramped pads and a flange defining a channel having a corresponding ramped pad. When two halves are positioned together then rotated into the locked position, the ramped pad of the flange is positioned proximately to the either of the ramped pads of the flange to prevent inadvertent lateral compression of the two halves that would otherwise cause unintentional uncoupling. The coupling may be disconnected by simple rotation of one coupling half relative to the other so that the ramped pad of the lug is positioned between the spaced apart ramped pads of the lug and by pulling the coupling apart as done by current rail car decoupling procedures.

A gladhand coupling that prevents inadvertent separation of the coupling halves without the need for additional structure or manipulation to connect and disconnect the halves. Each half is equipped with a lug having two spaced apart ramped pads and a flange defining a channel having a corresponding ramped pad. When two halves are positioned together then rotated into the locked position, the ramped pad of the flange is positioned proximately to the either of the ramped pads of the flange to prevent inadvertent lateral compression of the two halves that would otherwise cause unintentional uncoupling. The coupling may be disconnected by simple rotation of one coupling half relative to the other so that the ramped pad of the lug is positioned between the spaced apart ramped pads of the lug and by pulling the coupling apart as done by current rail car decoupling procedures.

A gladhand coupling that prevents inadvertent separation of the coupling halves without the need for additional structure or manipulation to connect and disconnect the halves. Each half is equipped with a lug having two spaced apart ramped pads and a flange defining a channel having a corresponding ramped pad. When two halves are positioned together then rotated into the locked position, the ramped pad of the flange is positioned proximately to the either of the ramped pads of the flange to prevent inadvertent lateral compression of the two halves that would otherwise cause unintentional uncoupling. The coupling may be disconnected by simple rotation of one coupling half relative to the other so that the ramped pad of the lug is positioned between the spaced apart ramped pads of the lug and by pulling the coupling apart as done by current rail car decoupling procedures.