Patent ID: 8371329
Filing Date: 2013-02-12
Classification: G05D,Y10T

Abstract:
1. Pilot device suited to cooperate with a pressure regulator suitable for use in gas distribution systems, said regulator having high pressure at an inlet and low pressure at an outlet, said pilot device comprising: a head having two chambers separated by a first membrane, an upper chamber being at the outlet pressure of said pressure regulator and a lower chamber being at atmospheric pressure; a body provided with mechanical elastic setting means connected to an axial thrust unit acting on said first membrane and cooperating with a regulation unit having at a regulation unit inlet a supply pressure which provides a motorization gas at a regulation unit output, said gas being transferred into ducts connected to a motorization chamber of said pressure regulator, said pilot device featuring a tank having a wall with a further membrane provided with said mechanical elastic setting means, gas being conveyed to said tank with a load pressure suited to modify the thrust of said mechanical setting means on said axial thrust unit, wherein the pilot device is provided with a closed compensation chamber arranged between said tank and said head, and having in common with said tank said further membrane; wherein between said head and said compensation chamber there is an intermediate chamber communicating with the free atmosphere.