Valve feeder

摘要

Device for supplying gas for supplying at least one burner (11) in a device which is supplied with gas or with an air / gas mixture, the gas supply device (10) having a supply pipe (12) which extends from an inlet end ( 13) extends to a gas supply end (14), the following being present in succession along the supply pipe (12): - an input component (15) with two solenoid valves (18a, 18b) coaxial with each other or separated from each other and with at least a first one Cooperating opening (19) which is present in the supply pipe (12) and which are held in a normally closed position by two respective retaining springs (20a, 20b), the solenoid valves (18a, 18b) each in an open position in relation to the effect of at least one electrically operated coil (21), which is assigned to one or both of the electrovalves (18a, 18b), can be positioned; - a pressure regulator (16) which is connected to a Closing (22) is provided which cooperates with a second opening (23) which is present in the supply pipe (12) and is connected to a first regulating membrane (24) which can define a regulating chamber (25) in which the internal pressure is equal to atmospheric pressure, the first regulating diaphragm (24) also being connected to a regulating spring (26) which is configured to reduce the pressure of the gas downstream of the second opening (23) in relation to that on the regulating spring (26 ) defined compressive force with the aid of a mechanical calibration device (27); - a flow rate regulator (17) having a fixed body (34) which is fixed in the supply pipe (12) and has a through opening (35), a movable body (36 ), which is provided with a closure portion (37) which mates with the through opening (35) in order to define the passage cross section of the gas in relation to its reciprocal position, and a second movement element (38) which is configured so that it positions the closure portion (37) at least between an open position and a partially closed position, in each of which the through opening (35) is open and the through opening (35) through the closure portion (37 ) is partially closed.