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1. (WO2017021572) CONSTANT FLOW VALVE FOR FIRE PROTECTION FACILITIES

Pub. No.:    WO/2017/021572    International Application No.:    PCT/ES2016/070308
Publication Date: Fri Feb 10 00:59:59 CET 2017 International Filing Date: Wed Apr 27 01:59:59 CEST 2016
IPC: F16K 31/122
F16K 17/02
G05D 7/03
Applicants: RG GREEN SYSTEMS, S.L.
Inventors: MELGOSA ARCOS, Raúl
Title: CONSTANT FLOW VALVE FOR FIRE PROTECTION FACILITIES
Abstract:
The invention controls the discharge of fluid stored under pressure in cylinders (4) and comprises a body (2) with a fluid inlet (3) and a fluid outlet (5), as well as a closing shaft (6), the movement of which, determined by release means (7), opens or closes the passage of the fluid, characterised in that the release means (7) are pneumatic, comprising at least one pneumatic actuation opening (11) with a non-return valve (12) and a tight chamber (10) which are associated with said closing shaft (6), thereby determining the adjustment of the pressure of the fluid in the outlet (5) and in such a way that the outflow pressure is determined by the pneumatic actuating pressure, independently from the pressure of the fluid inflow from the cylinder (4). The release means (7) comprise a pressurised cartridge (8) of compressed gas associated with a manual and electric actuator (9) outside the body (2) and the tight chamber (10), which is associated with the closing shaft (6) via a piston (14) which slides according to the pressure exerted in said tight chamber (10), which, in turn, transmits the movement to a rod (15) connected to said closing shaft (6). It comprises a spring (16) that holds the closing shaft (6) closed when the pressure in the opening (11) and in the tight chamber (10) is zero, or when the cylinder (4) is empty.