A manifold (15) comprising a flow chamber (35) for receiving flow heat exchange water from respective heat sources (3, 5, 7) through first inlet ports (47, 48) and from which the flow heat exchange water is delivered to heat exchange circuits (8, 9) through flow ports (57, 58). A return chamber (36) in the manifold (15) for receiving return heat exchange water from the heat exchange circuits (8, 9) through return ports (57, 58), and from which the return heat exchange water is returned to some of the heat sources (3, 5, 7) through first outlet ports (53, 54). A bypass chamber (37) located in the manifold (15) between the flow chamber (35) and the return chamber (36) receives flow water from the flow chamber (35), which has not been drawn off by the heat exchange circuits (8, 9), through a communicating passageway (40). Heat exchange water from the bypass chamber (37) is returned through second outlet ports (55, 56) to others of the heat sources (3, 5, 7).

Separator device for separating gas from a liquid flow, including a housing having an inlet and an outlet. The separator device includes a venturi in a liquid flow path extending from the inlet to the outlet. The separator device includes a nozzle in communication with the liquid flow for spraying a part of the liquid of the liquid flow into the housing. The separator device includes a valve for allowing gas to escape from the housing.

A vent attachment facilitates attaching a coaxial air intake and exhaust vent of a tankless water heater to a Category I vent, such as B-vent. The vent attachment comprises a first end with a coaxial connector comprising a central exhaust pathway and a circumferential air intake pathway. The vent attachment also comprises a second end with a tubular exhaust vent connector in fluid communication with the central exhaust pathway. The vent attachment further comprises a frame that encloses the central exhaust pathway and comprises a mesh configured to provide fluid communication through the frame with the air intake pathway. Additionally, operation of the tankless water heater is modified to ensure that the exhaust generated is suitable for venting through a Category I vent. The tankless water heater maintains a high fuel consumption rate such that the temperature of hot water produced increases throughout each of a plurality of burner stages.

A coalescing removal separator includes a separator tank having a separator input configured to receive a fluid flowing through a system having entrained gasses and solid particles, having a tank wall configured to form a volume/chamber inside the separator tank to process the fluid, and having a separator output configured to provide processed fluid that is free of at least some of the entrained gasses and solid particles; and a coalescing media arranged in the volume/chamber of the separator tank, the coalescing media having at least one helically wound brush with a stem and intertwined bristles substantially filling the volume/chamber of the separator tank and being configured to enable the at least some of the entrained gasses and solid particles to come out of the fluid.

An air pressure regulating device comprises an expansion tank having air stored therein and having an air injection/discharge port at an outside thereof; and a pressure regulation unit provided with a three-way ball valve connected to the air injection/discharge port, a pressure gauge which is installed in any one of flow paths of the three-way ball valve to check an internal pressure of the expansion tank, and a valve core which is installed in a flow path other than the flow path in which the pressure gauge is installed to be capable of injecting or discharging air into or from the expansion tank so as to be capable of controlling the internal pressure of the expansion tank.

A removal device for removing gas bubbles and/or dirt particles from a liquid in a liquid conduit system includes a main channel for a main flow, the main channel having an entry and an exit which are configured to be connected to the conduit system; a housing which defines an inner space; at least one supply channel extending from the main channel to the inner space; at least one return channel extending from the inner space back to the main channel; and a branch flow control member positioned in the main channel. The branch flow control member being movable between a first position to branch off at least a part of the incoming main flow into the inner space via the supply channel and a second position to branch off at least a part of the incoming main flow into the inner space via the supply channel.

The present invention relates to a connector (100) for a water system. The connector comprises an inlet connector (105), a connector body and an outlet connector (120) arranged in sequence. The connector body is open-sided so as to form a tundish having an open air gap between the inlet and outlet connectors (105, 120), through which water can fall in use. The connector (100) further comprises a sensor for detecting the presence of water within the connector body.

A system containing a device mounted to the flange of a tank style water heater while being connected to a AC power-source and thereby treating and heating the water, within a passage between electrodes in a core, simultaneously delivering bacteria free warm or hot improved water without limescale issues and being 20% to 30% more energy efficient. Furthermore, a method is describe using a pump to deliver the water to the device in connection with a control solution.

A multi-function pressure vessel suited for installation in a heat transfer fluid system. The multi-function pressure vessel comprises: a tank defining an internal volume, a bladder dividing the internal volume into a heat transfer fluid chamber for ac commodating expansion fluid and a pressurized gas chamber adapted to be filled with a pressurized gas. The tank has a heat transfer fluid inlet for receiving an incoming flow of heat transfer fluid from the heat transfer fluid system and a heat transfer fluid outlet connected in fluid flow communication with the heat transfer fluid inlet by an internal pipe mounted in the heat transfer fluid chamber. The internal pipe has perforations defined therein. An air vent at an upper end of the heat transfer fluid chamber is provided for venting any air bubbles passing through the perforations in the internal pipe. A drain valve may be provided at a bottom end of the heat transfer fluid chamber for removing dirt particles flowing through the perforations in the internal pipe.

A liquid distribution unit, for use in a liquid distribution system designed for saving liquid and thermal energy. It comprises and inlet manifold (FL) with a number of branch connections (CI, C2) for connection, in use, with associated feeding conduits (FC1, FC2) and liquid tap units. The inlet manifold device has an inlet end (IE) for joint connection, in use, with a liquid source (LS). Each branch connection has an associated control valve (CV1, CV2) for selective communication, in use, between the liquid source and an associated one of the feeding conduits. Each branch connection is also provided with an additional branch connection located downstream in relation to the associated control valve, as seen when the liquid is refilled into the feeding conduit, and having an associated, separate liquid evacuation valve (EV1, EV2) and an outlet end (OE1, OE2). The outlet ends of the additional branch connections are jointly connectable to an evacuation liquid pump (EP).