EP 0649946 B1 20010502 - Process for actuating a shut-off valve and a control system for actuating such a valve
Title (en)
Process for actuating a shut-off valve and a control system for actuating such a valve
Title (de)
Verfahren zum Betätigen eines Absperrventils sowie Steueranordnung zum Betätigen eines solchen
Title (fr)
Procédé et dispositif de commande d'une soupape d'obturation
Publication
Application
Priority
DE 4336020 A 19931022
Abstract (en)
[origin: EP0649946A2] The invention relates to a control system (10) for a subatmospheric-pressure-actuable shut-off valve, intended for a subatmospheric-pressure waste-water (sewage) system, comprising a first valve (14) which can be actuated by a dynamic pressure caused by accumulated wastewater, and a chamber (56) which can be pressure-adjusted via the first valve and in which, or adjacent to which, there is adjustably arranged a valve piston (24), acted upon by a spring (71), of a second valve (20) via which, in dependence on the pressure prevailing in the chamber, a subatmospheric pressure passes to the shut-off valve in order to open the same, wherein, in the absence of dynamic pressure, the first valve closes and a pressure change which is necessary for closing the second valve takes place in the chamber. <IMAGE>
IPC 1-7
IPC 8 full level
E03F 1/00 (2006.01); F16K 17/30 (2006.01); F16K 31/122 (2006.01)
CPC (source: EP US)
E03F 1/006 (2013.01 - EP US); Y10S 137/907 (2013.01 - EP US); Y10T 137/0379 (2015.04 - EP US); Y10T 137/7316 (2015.04 - EP US); Y10T 137/7768 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0649946 A2 19950426; EP 0649946 A3 19960731; EP 0649946 B1 20010502; DE 4336020 A1 19950427; DE 4336020 C2 19970515; DE 59409737 D1 20010607; JP H07198052 A 19950801; US 5657784 A 19970819
DOCDB simple family (application)
EP 94116591 A 19941021; DE 4336020 A 19931022; DE 59409737 T 19941021; JP 28436194 A 19941024; US 32621494 A 19941020