A flexible polymeric pipe for transportation of oil, gas or water, having an unbonded reinforcing intermediate layer between two polymeric layers. The pipe has a vent for the intermediate layer which allows venting of gas from the intermediate layer through to the exterior environment. The vent is generally impervious to water but pervious to air and gas.

A drain coupling adapted to connect to two electrical conduits to facilitate a drainage of condensate formed inside the electrical conduits is provided. The drain coupling comprises a tubular portion defining an elongated channel and having a first end defining a first opening adapted to connect to a first electrical conduit, and a second end arranged opposite to the first end and defining a second opening adapted to connect to a second electrical conduit. A drain tube is arranged substantially centrally to the tubular portion and extending substantially perpendicularly to the tubular portion. The drain tube includes an inlet opening at an interface of the tubular portion and an outlet opening at a second free end of the drain tube, thereby facilitating a fluid connection of a drain passage of the drain tube with the elongated channel. A guard is arranged inside the tubular portion and partially covering the inlet opening of the drain tube. The guard may be positioned at an interface of the drain tube with the tubular portion and covering the inlet opening.

A drain coupling adapted to connect to two electrical conduits to facilitate a drainage of condensate formed inside the electrical conduits is provided. The drain coupling comprises a tubular portion defining an elongated channel and having a first end defining a first opening adapted to connect to a first electrical conduit, and a second end arranged opposite to the first end and defining a second opening adapted to connect to a second electrical conduit. A drain tube is arranged substantially centrally to the tubular portion and extending substantially perpendicularly to the tubular portion. The drain tube includes an inlet opening at an interface of the tubular portion and an outlet opening at a second free end of the drain tube, thereby facilitating a fluid connection of a drain passage of the drain tube with the elongated channel. A guard is arranged inside the tubular portion and partially covering the inlet opening of the drain tube. The guard may be positioned at an interface of the drain tube with the tubular portion and covering the inlet opening.

A valve assembly includes a valve housing having an inlet, an outlet and an opening, and an insert removably insertable in the opening. The insert has a first side facing upwards and a second side facing downwards when positioned in the opening. The first side and the second side have a conduit positioned therebetween, and a control valve located at least partially within the conduit and movable between an open position and a closed position. The control valve in the closed position stops fluid from passing through the conduit. When the insert is inserted in the opening and the control valve is in the closed position, the insert substantially seals the inlet and stops fluid flowing to the outlet.

A valve assembly includes a valve housing having an inlet, an outlet and an opening, and an insert removably insertable in the opening. The insert has a first side facing upwards and a second side facing downwards when positioned in the opening. The first side and the second side have a conduit positioned therebetween, and a control valve located at least partially within the conduit and movable between an open position and a closed position. The control valve in the closed position stops fluid from passing through the conduit. When the insert is inserted in the opening and the control valve is in the closed position, the insert substantially seals the inlet and stops fluid flowing to the outlet.

The invention relates to an arrangement (100) having a liquid tank (10), at least one line (11, 11a, 11b) connected to the liquid tank (10), through which liquid (F) can be transported from the liquid tank (10), and a pump (13) connected to the at least one line (11, 11a, 11b) for conveying the liquid (F) from the liquid tank (10) through the at least one line (11, 11a, 11b) in the direction of flow (R) during an operating phase, wherein a pressure accumulator (14) connected to the at least one line (11, 11a, 11b) is provided, by means of which a pressure can be generated in the at least one line (11, 11a, 11b) outside of the operating phase, and a ventilating element (15, 15a, 15b), which can be transitioned into an open position and into a closed position, is arranged along the at least one line (11, 11a, 11b), wherein, outside of the operating phase, a pressure impulse within the at least one line (11, 11a, 11b) can be generated by the pressure generated by the pressure accumulator (14) and a subsequent transition of the ventilating element (15, 15a, 15b) into the open position in order to drain the line (11, 11a, 11b) of the fluid (F).

The invention relates to an arrangement (100) having a liquid tank (10), at least one line (11, 11a, 11b) connected to the liquid tank (10), through which liquid (F) can be transported from the liquid tank (10), and a pump (13) connected to the at least one line (11, 11a, 11b) for conveying the liquid (F) from the liquid tank (10) through the at least one line (11, 11a, 11b) in the direction of flow (R) during an operating phase, wherein a pressure accumulator (14) connected to the at least one line (11, 11a, 11b) is provided, by means of which a pressure can be generated in the at least one line (11, 11a, 11b) outside of the operating phase, and a ventilating element (15, 15a, 15b), which can be transitioned into an open position and into a closed position, is arranged along the at least one line (11, 11a, 11b), wherein, outside of the operating phase, a pressure impulse within the at least one line (11, 11a, 11b) can be generated by the pressure generated by the pressure accumulator (14) and a subsequent transition of the ventilating element (15, 15a, 15b) into the open position in order to drain the line (11, 11a, 11b) of the fluid (F).

A ventilation system for insulated pipe or pipeline to prevent corrosion thereof is discussed. The ventilation system can include an outer skin wrapped around the insulated pipe or pipeline, the outer skin separated from the insulation pipe by stand-off supports to form an annular chamber within the system. The system has a vent screen along a bottom side of the outer skin and a gable running along the top side of the outer skin, the gable having a number of openings therethrough to allow air to flow in through the vent screen, through the annular chamber and out through the gable openings, drawing moisture from the insulation thereby preventing corrosion of the pipe or pipeline.

A ventilation system for insulated pipe or pipeline to prevent corrosion thereof is discussed. The ventilation system can include an outer skin wrapped around the insulated pipe or pipeline, the outer skin separated from the insulation pipe by stand-off supports to form an annular chamber within the system. The system has a vent screen along a bottom side of the outer skin and a gable running along the top side of the outer skin, the gable having a number of openings therethrough to allow air to flow in through the vent screen, through the annular chamber and out through the gable openings, drawing moisture from the insulation thereby preventing corrosion of the pipe or pipeline.

The present invention relates to a hydraulic and/or pneumatic multi-coupler connector of the type comprising at least one pair of couplers inserted into a containment body and equipped with a lever actuated mechanism comprising an actuation lever maneuverable by the user for the relief of the residual pressure of the couplers and the connection thereof to corresponding male couplers.