A hose assembly for a pump comprising a pressurized hose, wherein the pressurized hose is exposed to pressure during at least a part of the operation of the pump, and a leak detection system comprising an outer hose concentrically positioned about at least a portion of the pressurized hose such that an annular chamber exists between the pressurized hose and the outer hose, whereby a leak of the pressurized hose can be detected by monitoring the hose assembly and/or a leak sensor associated therewith.

A fluid delivery line assembly comprising: a valve assembly including: a fluid passageway and a valve control chamber, a valve member disposed within the fluid passageway and movable between closed and open positions, a pressure-operated member disposed in the valve control chamber and operatively connected to the valve member to maintain the valve member in the open position when pressure within the pressure control chamber is above a predetermined opening pressure; a conduit having a main conduit passageway in fluid communication with the fluid passageway of the valve assembly and a secondary conduit passageway in communication with the valve control chamber; and an end connector including a main connector passageway in fluid communication with the main conduit passageway and a secondary connector passageway in fluid communication with the main connector passageway and with the secondary conduit passageway to allow fluid from the main connector passageway to enter the valve control chamber to allow the pressure inside the valve control chamber to reach the predetermined opening pressure.

A monitoring system for a multiple-walled fluid system with a first walled region including a flowing or stagnant fluid and at least one second walled region at least partially surrounding the first walled region. The first walled region and the at least one second walled region forming the multiple-walled fluid system, the first walled region being in fluid communication with the at least one second walled region, the at least one second walled region also being in fluid communication with the ambient environment. A data processing device for monitoring at least one pressure difference between a pressure in at least one a control volume and at least one second pressure in the at least one second walled region, a first control volume in fluid connection with the first walled region and the ambient environment. The at least one pressure difference indicating the status of the multiple-walled fluid system.

Illustrated and described is a floating hose segment (4) with an inner hose element (14) which has a first outer surface (22) which faces away from a line region (16), an outer hose element (24) which has a second inner surface (26) which delimits an interior space through which the inner hose element (14) extends, and a second outer surface (28) which faces outward away from the inner hose element (14), and a communication device (46) which is adapted to transmit information directly or indirectly to a central control device (54), wherein at least one sensor device (42) is provided which is adapted so as to be capable of detecting the presence of at least one substance in the region between the first outer surface (22) and the second inner surface (26), wherein the at least one sensor device (42) is linked to the communication device (46) such that information relating to the presence of the at least one substance between the first outer surface (22) and the second inner surface (26) can be transmitted to the communication device (46), and wherein the communication device (46) is adapted to transmit the information relating to the presence of the at least one substance between the first outer surface (22) and the second inner surface (26) to the central control device (54). A floating hose system is moreover described.

An integrity monitoring system for a lined pipeline is provided for monitoring the integrity of a polymer liner in a host pipe. Methods and apparatus are described by which a lined pipeline is provided with such an integrity monitoring system. Sensor cable is able to bridge a joint between sections of lined pipe, for example by routing the sensor cable across the joint via a channel in an electrofusion fitting or by connecting successive lengths of sensor cable via pass-throughs in an electrofusion fitting. Advantageously, the sensor cable is disposed within a continuous annulus between linings and host pipes, and the continuous annulus is maintained across pipe joints using electrofusion fittings.

A fluid delivery line assembly comprising: a valve assembly including: a fluid passageway and a valve control chamber, a valve member disposed within the fluid passageway and movable between closed and open positions, a pressure-operated member disposed in the valve control chamber and operatively connected to the valve member to maintain the valve member in the open position when pressure within the pressure control chamber is above a predetermined opening pressure; a conduit having a main conduit passageway in fluid communication with the fluid passageway of the valve assembly and a secondary conduit passageway in communication with the valve control chamber; and an end connector including a main connector passageway in fluid communication with the main conduit passageway and a secondary connector passageway in fluid communication with the main connector passageway and with the secondary conduit passageway to allow fluid from the main connector passageway to enter the valve control chamber to allow the pressure inside the valve control chamber to reach the predetermined opening pressure.

A device for detecting and signalising a leakage in a double-walled conduit system of a heat exchanger for heating fresh water by way of heat from waste water in the sanitary field as well as a heat exchanger including such a device. The device has an elastic element and a signalisation unit, wherein the elastic element is essentially liquid-tight and the signalisation unit is configured to generate an acoustic signal and the signalisation unit is activatable by way of a mechanical deformation of the elastic element.

In accordance with at least one aspect of this disclosure, a fluid system of an aircraft includes a primary fluid conduit that conveys a primary fluid, and a leak detection system disposed around at least a portion of the primary fluid conduit and forming one or more detection volumes. The leak detection system determines whether there is a primary fluid leak into the one or more detection volumes by sensing a pressure change in the one or more detection volumes.

The disclosure relates to a gas valve unit having an enclosure provided with an inlet and an outlet, with an inner pipe arranged to extend from the inlet to the outlet via the enclosure forming a gas tight piping inside the enclosure, and an outer pipe arranged to open into the enclosure via an at least one opening. Walls of the inner pipe and the outer pipe form a space there between as a first volume, and the enclosure forms a space inside as a second volume, the first and second volumes being arrangeable in flow communication with each other via an opening in connection with the outer pipe. At least one blocking unit selectively blocks the at least one opening in connection with the outer pipe and the flow communication between the first volume and the second volume.

The disclosure relates to a gas valve unit having an enclosure provided with an inlet and an outlet, with an inner pipe arranged to extend from the inlet to the outlet via the enclosure forming a gas tight piping inside the enclosure, and an outer pipe arranged to open into the enclosure via an at least one opening. Walls of the inner pipe and the outer pipe form a space there between as a first volume, and the enclosure forms a space inside as a second volume, the first and second volumes being arrangeable in flow communication with each other via an opening in connection with the outer pipe. At least one blocking unit selectively blocks the at least one opening in connection with the outer pipe and the flow communication between the first volume and the second volume.