Abstract: A liquid control valve including a body comprising an inlet port, an outlet port, and an interior chamber, the body defining a liquid passageway between the inlet and outlet ports. Also included is a plunger comprising a groove provided on an external wall, the plunger being configured to reciprocate within the interior chamber of the body between a first position where the valve is closed and a second position where the valve is open. Also provided is a sealing arrangement within the groove configured to seal between the plunger and the interior chamber of the body. The sealing arrangement includes a first sealing element on the external wall of the plunger and spaced apart from an inner wall of the internal chamber, and a second sealing element on the inner wall of the internal chamber and spaced apart from the external wall of the plunger.

Abstract: A liquid control valve including a body comprising an inlet port, an outlet port, and an interior chamber, the body defining a liquid passageway between the inlet and outlet ports. Also included is a plunger comprising a groove provided on an external wall, the plunger being configured to reciprocate within the interior chamber of the body between a first position where the valve is closed and a second position where the valve is open. Also provided is a sealing arrangement within the groove configured to seal between the plunger and the interior chamber of the body. The sealing arrangement includes a first sealing element on the external wall of the plunger and spaced apart from an inner wall of the internal chamber, and a second sealing element on the inner wall of the internal chamber and spaced apart from the external wall of the plunger.

Abstract: A float or a near neutral buoyancy weight operated liquid pressure control valve includes a body which together with an end cap form a cavity and retain a diaphragm therein. A back-pressure chamber is formed between the end cap and the diaphragm and the diaphragm includes a seal section which seats on an inlet port. The diaphragm seal also separates the inlet from an outlet formed in the body. A float support arm reciprocally operates a valve opening and closing control pin mounted in an associated bleed passage formed longitudinally through a control pin mounting. In an open mode the bleed passage vents the chamber. In a closed mode the pressure in the chamber displaces the diaphragm to close the valve. A slide is coupled to the diaphragm so as to be displaced therewith and prevent excessive pressure to distort the diaphragm once the seal closes on port.

Abstract: A liquid pressure control valve includes at least one O-ring seal mounted, in a first sealing position, on a sealing section of a first component thereof to seal a junction between that first component and a second component which junction controls a bleed passage between. The first component is threadingly engaged within the second component. The valve includes a chamber intended to contain liquid up to a required pressure during operation of the valve. The valve includes at least one annular impingement element mounted about a reduced diameter section, relative to the sealing section, of the first component and adjacent thereto with the impingement element.

Abstract: A float or a near neutral buoyancy weight (neither depicted) operated liquid pressure control valve includes a body (1A) which together with an end cap (1B) form a cavity and retain a diaphragm (10) therein. A back-pressure chamber (4) is formed between the end cap (1B) and the diaphragm (10) and the diaphragm (10) includes a seal section (10F) which seats on an inlet port (6) formed by a wall (5) projecting into the cavity. The diaphragm (10) seal (10F) also separates the inlet (2) from an outlet (3) formed in the body (1A). A float support arm (7) reciprocally operates a valve opening and closing control pin (8) mounted in an associated bleed passage (9)formed longitudinally through a control pin (8) mounting (16). Mounting (16) is fixed to end cap (1B) and extends through the diaphragm (10), the bleed passage (9) thus joining the inlet (2) to the chamber (4). In an open mode (arm 7 lowered) the bleed passage (9) also vents the chamber (4).

Abstract: A liquid pressure control valve includes at least one O-ring seal mounted, in a first sealing position, on a sealing section of a first component thereof to seal a junction between that first component and a second component which junction controls a bleed passage between. The first component is threadingly engaged within the second component. The valve includes a chamber intended to contain liquid up to a required pressure during operation of the valve. The valve includes at least one annular impingement element mounted about a reduced diameter section, relative to the sealing section, of the first component and adjacent thereto with the impingement element.

Abstract: A bath includes a water outlet or outlets arranged to in use direct a flow of water from behind onto the upper body of a bather or bathers sitting in the bath and leaning back against the wall of the bath. The upper body water outlet(s) may comprise two spaced water outlets one positioned to direct a water flow onto the left-side upper body of a bather and the other positioned to direct a water flow at the same temperature onto the right-side upper body of the bather.

Abstract: A bath includes in or associated with an upper wall or rim section of the bath at least one water connection, a neck water outlet fitting 2 interchangeably connectable to the water connection to when connected direct a flow of water generally centrally on to the neck and/or upper back of a bather reclining against the adjacent bath wall, and a shoulders water outlet fitting or fittings 15 interchangeably connectable to the water connection to when connected direct a flow of water on to the shoulders or front shoulder regions of a bather reclining against the adjacent bath wall.

Abstract: A bath includes a water outlet or outlets (5) arranged to in use direct a flow of water from behind onto the upper body of a bather or bathers sitting in the bath and leaning back against the wall (1) of the bath. The upper body water outlet(s) may comprise two spaced water outlets one positioned to direct a water flow onto the left-side upper body of a bather and the other positioned to direct a water flow at the same temperature onto the right-side upper body of the bather.

Abstract: A valve for controlling a “guaranteed” back up pressurised liquid supply to a tank fed from another primary supply. The valve controls the quantity of water in the tank between a predetermined upper and lower level. The valve has an inlet and an outlet interconnected by a restricted passage controlled by a diaphragm. The passage is formed by a bore and a reciprocally operative rod is mounted therein. The rod is connected to a support lever which is spring biased to close the valve. The support lever has an operating weight element suspended therefrom by a depending cord. The operating weight has two sections, which have a combined weight providing substantially neutral buoyancy in water. The cord length between the lever and the lower operating weight sections determines the lower water level threshold. The cord length between the two weight sections determines the differential between the lower and upper level.