EP 1332290 A2 20030806 - PILOT-OPERATED PRESSURE SHUT-OFF VALVE AND PILOT VALVE ASSEMBLY THEREFOR
Title (en)
PILOT-OPERATED PRESSURE SHUT-OFF VALVE AND PILOT VALVE ASSEMBLY THEREFOR
Title (de)
VORGESTEUERTES DRUCKABSCHALTVENTIL UND VORSTEUERVENTILANORDNUNG DAFÜR
Title (fr)
SOUPAPE PILOTÉE DE COUPURE DE PRESSION ET ARRANGEMENT DE VALVE PILOTE
Publication
Application
Priority
- DE 10054704 A 20001104
- EP 0112094 W 20011019
Abstract (en)
[origin: WO0236967A2] The invention relates to a pilot-operated pressure shut-off valve with a main control piston (20), by means of which an inlet (12), which can introduce a pressure medium to a hydraulic system, is connected to a drain (13), on reaching an upper system limiting pressure and adopting a first switched position and is separated from said drain (13), on reaching a lower system limiting pressure and adopting a second switched position. The pressure shut-off valve has a pilot valve arrangement (11). On such a pressure shut-off valve, the pilot valve arrangement should be compact and of simple construction, in contrast to pilot valve arrangements on a pressure shut-off valve where the upper system pressure and the lower system pressure can not be set independently of each other and should be exchangeable and produced economically. According to the invention, the above is achieved, whereby both pilot pistons (44, 48), both pilot springs (45, 49) and both adjuster screws (78, 80) are arranged concentrically within each other, whereby both pilot pistons (44, 48) are mechanically adjustable completely separately from each other.
IPC 1-7
IPC 8 full level
F16K 3/24 (2006.01); F15B 1/027 (2006.01); F15B 11/08 (2006.01); F16K 31/363 (2006.01)
CPC (source: EP US)
F15B 1/0275 (2013.01 - EP US); Y10T 137/2625 (2015.04 - EP US); Y10T 137/263 (2015.04 - EP US); Y10T 137/2635 (2015.04 - EP US); Y10T 137/7766 (2015.04 - EP US); Y10T 137/777 (2015.04 - EP US)
Citation (search report)
See references of WO 0236967A2
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0236967 A2 20020510; WO 0236967 A3 20030213; DE 10054704 A1 20020508; DE 50112199 D1 20070426; EP 1332290 A2 20030806; EP 1332290 B1 20070314; JP 2004515723 A 20040527; US 2004099828 A1 20040527; US 7204266 B2 20070417
DOCDB simple family (application)
EP 0112094 W 20011019; DE 10054704 A 20001104; DE 50112199 T 20011019; EP 01992837 A 20011019; JP 2002539691 A 20011019; US 39967103 A 20030418