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1. (WO2018051150) FLOWRATE STABILISING MONOBLOCK CARTRIDGE FOR HYDRAULIC VALVES

Pub. No.:    WO/2018/051150    International Application No.:    PCT/IB2016/001283
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Wed Sep 14 01:59:59 CEST 2016
IPC: G05D 7/01
Applicants: CALEFFI S.P.A.
Inventors: CALEFFI, Marco
Title: FLOWRATE STABILISING MONOBLOCK CARTRIDGE FOR HYDRAULIC VALVES
Abstract:
A flowrate stabilising monoblock cartridge (10) for hydraulic valves provides a body with a fluid inlet section with fluid inlet openings, an intermediate section (12) with a first shutter (16) mounted on a diaphragm (17), and an outlet section in which a flowrate adjusting second shutter (26) acts, controlled by an actuating device; on a face of the diaphragm (17) pressure acts that is reduced compared to the inlet pressure and the outlet pressure acts on the other face of the diaphragm (17); pre-adjustable openings in the outlet section (13) adjust the fluid flowrate at the outlet of the cartridge (10). The cartridge (10) enables a flowrate to be adjusted independently of the pressure and be used with great pressure differences upstream and downstream of the cartridge (10), the cartridge (10) is further compact, easily installable in any valve body and silent.