Abstract: Valve for regulating and measuring the flowrate of a fluid through a header (1) and a bypass duct (2,2b) inside the said header, comprising means (10,10a) for shutting off the aperture (2b) of the bypass duct (2), which are movable axially upon operation of associated actuating means (30), means (44) for detecting the pressure exerted by the fluid flow, an instrument (43,43a) for measuring the flowrate of the fluid, the scale (43a) of which is provided on the external surface of said actuating means (30), said means (10,10a) for shutting off the aperture (2b) of the bypass duct (2) being joined to said actuating means (30) so that rotation of the latter results in only the axial movement of the former and the shut-off means (10,10a) are independent of the measuring instrument (43,43a) during their movement in the axial direction.

Abstract: A Two-way valve for regulating and measuring the flow rate of a fluid through a header (1) and a branched duct (2,2a) inside the header itself. The valve (10a, 10, 11, 11c) which shuts off the aperture (2b) of the branched duct (2) is internally hollow and movable axially by an associated actuator (13). Discs (30, 130) for detecting the pressure exerted by the flow of the fluid are integral with elements (20, 40) movable axially against the opposing action of a spring (60, 160) and form part of an instrument (70, 170) for measuring the flow rate. The valve comprises a head (10a), on the side surface of which recesses (10d) are formed.

Abstract: Butterfly valve with a sealing element in elastomeric material with an internal metal reinforcement, made of a substantially tubular outer valve body, with flow pipe connections for fluids at its extremities, in whcih there is a seal in elastomeric material encircling a disc-shaped, internally mobile shutter, equipped with a diametral axis shaft transversal to the valve body axis, protruding out of the same body and bearing the rotation commanding organs, the sealing element being equipped with an inside metal ring, axially extended substantially for the entire length of the same sealing element, and with external sealing reliefs, in correspondence of which there are related seatings in the external body, an ample elastic deformation of the elastomeric material being allowed in the sealed areas, made of a substantially tubular outer valve body, with flow pipe connections for fluids at its extremities, in which there is a seal in elastomeric material encircling a disc-shaped, internally mobile shutter, equippe

Abstract: In the direct measurement of thermal energy transferred in heating or air conditioning installations, the difference between voltages from outflow and return flow temperature sensors is integrated during a first timing period and then discharged during a second timing period with a constant current to operate a gate passing a number of pulses proportional to the voltage difference. The first and second timing periods are initiated by impulses from a volume flow sensor. During non-timing-period intervals a reference voltage capacitance is set by integrating circuit feedback.In collection of data from a plurality of thermal energy transfer meters, inputs from the meters are scanned at rates greatly exceeding the pulse frequencies to increment or decrement the count in digital filter stages of corresponding pairs of counters depending upon whether sensed voltage levels are opposite or equal to the last accepted voltage level as recorded in a most significant stage of the digital filter.

Abstract: The method and apparatus herein described relate to the indirect measuring of thermal energy supplied to a number of user stations, for instance to all the apartments of a single building or to many buildings or the like. A temperature sensor with a voltage frequency converter provides an electric signal with a frequency which varies according to the temperature of the thermal carrier fluid. An electronic circuit processes the temperature signal through a variable multiplier which is set by respective multiplexed heat transfer ratings of the corresponding stations to produce a series of impulse trains corresponding to thermal energy consumed by the corresponding stations. Multiplexed counting devices, controlled by demand signals corresponding to fluid flow in the respective stations, receive the respective pulse trains to produce readings of the thermal energy consumed by the corresponding stations.

Abstract: The described method and apparatus are relative to the indirect measurement of thermal energy delivered to numerous heating elements, part of one or several zones, for instance all the radiators in an apartment or all the radiant panels of single family quarters. The apparatus consists of a temperature sensor which outputs an electric signal depending upon the temperature of the carrying fluid in which it is immersed and corrected as a function of the type of heating unit used (radiators, fan-coils, radiant panels, convectors, etc.