Abstract: A centrifugal electric pump includes a motor casing, containing in turn, an electric motor with a transmission shaft and a hydraulic part. The transmission shaft is connected to at least one impeller present disposed in the hydraulic part. The motor casing is provided internally with a housing in which the electric motor is accommodated. An external surface of the housing defines a cooling surface adapted to be flowed over by pumping liquid that arrives from the hydraulic part. The cooling surface is provided with a covering that is resistant to oxidation. The covering is constituted by a hydraulically isolating sheath, which is contoured to affect the cooling surface.

Abstract: A centrifugal pump, of the submersed or submersible type, includes a hydraulic part, with a hollow body inside which there is at least one impeller, a motor enclosed within a motor casing that isolates the motor from the pumping liquid, adapted to drive the impeller in rotation via a rotation transmission shaft. The centrifugal pump further includes an open compartment that spaces the motor casing from the hollow body that contains the at least one impeller and hydraulic sealing elements between the open compartment and the motor casing.

Abstract: An apparatus for assembling a permanent-magnet electric motor to be used particularly in pumping devices, which comprises a tubular element made of non-magnetic material, to be inserted and coupled in the axial cavity of a stator of an electric motor, and adapted to accommodate inside it a rotor of an electric motor.

Abstract: Centrifugal electric pump, comprising a pump body, with an aspiration inlet and a delivery outlet, a hydraulic volute, within which an impeller is accommodated, and comprising an electric motor for moving the impeller. The hydraulic volute is constituted by two half-shells made of plastic material and mutually joined with joining means and with sealing means.

Abstract: A device for connecting a pump body to a pipe of a hydraulic system, which comprises a planar flange having a thread on the inside diameter for its coupling to a tubular intake portion or delivery portion of the pump body, which is threaded complementarily on its outside diameter.

Abstract: A cap for cooperating with a flow control element of a valve for a self-priming electric pump, the valve being designed to open and close a recirculation duct for the passage of the recirculating fluid from the impeller assembly to an intake duct, the cap having a tubular body and, coaxially inside the latter, a mushroom-shaped element, which divides, with its head, the cap into a first portion and a second portion to be applied at an opening of the recirculation duct outward, respectively in the overhead and underhead installation of the self-priming electric pump, the axial space occupation of the head and of the stem of the mushroom-shaped element that is extended from the head toward the second portion defining two alternative axial positions of interaction with the flow control element of the valve in the overhead and underhead installation.

Abstract: A motor casing for pumps, particularly centrifugal pumps and peripheral centrifugal pumps, containing a motor associated with the hydraulic part, provided with at least one impeller, by means of a rotation transmission shaft, the motor casing having at least one surface that is struck by pumping liquid that arrives from the hydraulic part and is provided with an oxidation-resistant coating.

Abstract: A base for pumping devices, the base comprising at least one module with which it is possible to mate one pumping device, the module comprising an intake connector and a delivery connector in order to connect respectively the intake and the delivery of the pumping device respectively to a first tubular element and to a second tubular element to which they are essentially perpendicular, the two tubular elements, the first one and the second one, passing through the base from a first lateral face thereof to an opposite second lateral face thereof, from which they face outward in order to be connected, selectively at either face, to a hydraulic system.

Abstract: A pumping device with tank with facilitated release, which comprises an electric pump and a delivery connector of the electric pump to which the tank is connected by way of quick and reversible connection elements at a connecting portion thereof.

Abstract: A pumping device, particularly for a domestic water supply, to be installed in a hydraulic system and comprising: a centrifugal electric pump, which has two intake connectors arranged along perpendicular directions and to be connected selectively to the hydraulic system, a tank for the supply liquid, which has a substantially cylindrical shape and is fixed to the centrifugal electric pump with an axis of symmetry that is substantially parallel to the axis of the pump, a manifold, provided with a one-way valve, intended to distribute the supply liquid to the tank and to one of two delivery connectors that are oriented along perpendicular directions and are to be connected selectively or simultaneously to the hydraulic system. The intake connectors and the delivery connectors are mutually close in a single portion of the pumping device, substantially a portion for connection to the hydraulic system.

Abstract: An apparatus for controlling the flow-rate of liquid of an electric pump and the temperature of the control and actuation electronics of a pumping device that carries the electric pump, the apparatus comprising, on a single monolithic segment of delivery duct, a flow-rate detector and a heat sink for a control and actuation unit, which is provided with temperature detection elements, the heat sink having a wet side that is exposed to the liquid and a dry side that is sealed from the liquid, with which the control and actuation unit is associated.

Abstract: A cartridge for a one-way valve, having the shape of an elongated body comprising a first portion, which supports the one-way valve and by means of which it enters a delivery duct, and a second portion, from which a grip portion for the extraction of the cartridge protrudes and remains outside the delivery duct.

Abstract: A multifunctional manual tool, of the type comprising a plurality of portions of keys of tools, the tool comprising a first element and a second element, each of which supports the portions of keys, the elements having an elongated shape to be associated transversely with each other so as to form at least one possible cross-shaped configuration for use for the tool, the first element having, between its two end portions, at least one slot designed to be crossed by the second element during their assembly.

Abstract: A pressure transducer, particularly to be installed in liquid pumping devices, comprising a cup-shaped container from the bottom of which a connector protrudes for connection to a pressurized duct; the connector and the bottom are traversed by a through hole for the passage of fluid inside the transducer to a pressure sensor; the transducer comprises elements for locking the pressure sensor in a single possible orientation inside the container and elements for preventing the extraction of the pressure sensor to from the container.

Abstract: A cap for cooperating with a flow control element of a valve for a self-priming electric pump, the valve being designed to open and close a recirculation duct for the passage of the recirculating fluid from the impeller assembly to an intake duct, the cap having a tubular body and, coaxially inside the latter, a mushroom-shaped element, which divides, with its head, the cap into a first portion and a second portion to be applied with engagement means at an opening of the recirculation duct outward, respectively in the overhead and underhead installation of the self-priming electric pump, the axial space occupation of the head and of the stem of the mushroom-shaped element that is extended from the head toward the second portion defining two alternative axial positions of interaction with the flow control element of the valve in the overhead and underhead installation.

Abstract: A plug for closing box-like bodies, which comprises a head that has a circular perimeter and from which at least two substantially flat stems protrude substantially tangentially, the plug entering, by means of the stems, the box-like body through an opening provided in a wall of the box-like body, each stem having snap-acting elements for quick engagement with a portion for accommodating the box-like body and at least one elastically deformable portion designed to be compressed during insertion.

Abstract: A fixing collar for pipes, tanks and bodies with cylindrical portions in general, of the type of a band that wraps around the element to be fixed to a supporting structure by way of fixing elements, the collar comprising three arc-like portions in series, which are associated by means of at least two hinges in positions that are not diametrically mutually opposite and close so as to surround the element to be fixed by way of snap-acting quick-closure elements arranged at the ends of the first arc-like portion and of the last arc-like portion of the three arc-like portions in series, the arc-like portions being further provided with elastic elements for compensating the dimensional tolerances of the diameter of the element to be fixed.

Abstract: A centrifugal electric pump, of the type comprising a shell for the containment of a set of impellers, interleaved with fixed diffusers and of a motor that drives the impellers to rotate, since they are keyed on a same shaft as the motor, a sealing chamber is provided between the impellers and the motor and is extended around the shaft to collect condensation water and water seepage originating from the set of impellers, the sealing chamber is connected to the outside of the pump by means of at least one water discharge duct.