Abstract: The subject matter of the present invention is a device for monitoring the flow rate of a medium in a continuous flow device such as a tube, a water distribution system, a heating boiler or the like, comprising a paddle pivotally mounted in a housing and comprising at its end a paddle blade that projects into the flow of the continuous flow device, the paddle's pole (11) comprising two opposing axle journals (25) that are rotatably receivable in the housing (2), said paddle's pole (11) being adapted to be introduced into said housing and the axle journals (25) being adapted to be snap-fit into bearing bushings (3), said paddle's pole (11) being elastically deformable in the region of the axle journals (25) in the direction of the longitudinal axis of the axle journals by the fact that the paddle's pole (11) comprises a slot-like opening (24) in the region of the axle journals.

Abstract: A flow switch includes a straight, rigid paddle arm and a hub formed mid-length of the paddle arm. An elongate cylindrical member and an elongate paddle handle are formed integrally with the hub and extend from the hub in opposite radial directions. A cylindrical magnet is disposed within a hollow interior of the cylindrical member. A flat paddle is formed integrally with the elongate paddle handle at a radially outermost end of the paddle handle. A transparent top housing houses a flat magnet that attracts the cylindrical magnet and causes the paddle arm to pivot into a position of repose. The cylindrical magnet pivots away from the position of repose into close proximity with a reed switch when the strength of the fluid flow exceeds the magnetic attraction. The reed switch is housed in the top housing in diametrically opposed relation to the flat magnet.

Abstract: A magnetic flow switch (1) is described that includes a body (2) defining a chamber (20) destined to have a fluid flow pass through it, an excitation magnet (4) placed in a shuttle (3) mounted such that it can slide within the chamber (20) of the body to pass from an initial front position to a final rear position, a Reed switch (6) arranged on the body (2) of the flow switch to detect the magnetic field generated by the displacement of the excitation magnet (4) and to accordingly send a control signal to an electronic control board, and at least one attraction magnet (7) arranged on the body (2) of the flow switch, in a position such as to generate an attraction magnetic field able to attract the excitation magnet (4) to make the shuttle (3) move to the initial front position.

Abstract: A bi-directional piloted solenoid-operated valve which utilizes fluid pressure to provide both pressure-assisted sealing and pressure-assisted actuation to the main sealing disc in both flow directions. The valve may include a mechanical position indicator for providing visual confirmation of the position of the main disc.

Abstract: A flow switch for use in tankless water heaters. The present invention is an activation flow switch for tankless water heaters. More specifically, the flow switch is comprised of polypropylene balls through which is inserted a magnet. The balls have a specific gravity less than water and are therefore buoyant. When flow through the water pipe commences, the flow switch raises in the flow switch cylinder thereby bringing the magnet into operative connection with a relay switch. The relay switch, once activated, signals to the water heater that hot water is required which in turn activates the heating elements of the water heater. Once the flow in the pipe subsides, the flow switch returns to its inactive position, thereby deactivating the water heater.

Abstract: A flow sensor has a paddle assembly that is mounted to a housing by opposed pivot posts which extend from the paddle assembly between the paddle and the magnet. The housing has two pivot post clips that resiliently capture the pivot posts which are received in mounting holes in resilient clips A shroud surrounds the housing and positions a biasing magnet which repels the magnet on the paddle assembly. The shroud slides over the housing and provides a transverse passageway that is aligned with a passageway in the housing. An activation sensor positioned within a sleeve is positioned within the transverse passageway of the housing and passes through a transverse passageway in the shroud pinning the two subassemblies together.

Abstract: A flow switch for a high pressure washing system or other flow-related system is disclosed. The flow switch switches from an open to a closed position in the presence of adequate flow in a water or other fluid-carrying pipe. The flow switch includes a housing with a tubular bore, an inlet port and an outlet port which allow fluid to flow through the housing. Within the housing is a plunger with an attached plunger magnet. The plunger is responsive to fluid flow. A sensor is situated proximate to the housing. A sensor magnet is placed in position near the sensor and opposes the plunger magnet. A third magnet (the alignment magnet) is placed proximate to the housing. When there is no flow within the housing, the plunger is at its rest position as the alignment magnet attracts the plunger magnet to correctly align and position the plunger within the housing.