EP 1252465 A2 20021030 - STOP VALVE FOR HYDRAULIC FLUIDS
Title (en)
STOP VALVE FOR HYDRAULIC FLUIDS
Title (de)
SPERRVENTIL FÜR HYDRAULIKFLÜSSIGKEITEN
Title (fr)
VANNE D'ARRET POUR LIQUIDES HYDRAULIQUES
Publication
Application
Priority
- DE 0104143 W 20011107
- DE 10055342 A 20001108
Abstract (en)
[origin: WO0238991A2] Large nominal diameters, especially in conjunction with high pressures, in hydraulic systems, lead to considerable operating forces being necessary for stop valves. Often, these forces can no longer be applied manually. Providing additional forms of energy such as electrical or pneumatic energy in hydraulic systems is complicated and costly. The invention makes use of the existing hydraulic pressure to enable a stop valve in a hydraulic system with conduits with a large nominal diameter to be operated manually. The invention relates to a 2/2-way stop valve for hydraulic fluids in industrial systems. The valve construction comprises the following: a pilot valve, an annulus (23), a switching plug (01) and sealing elements (02). The inventive stop valve is suitable for larger nominal diameters and high pressures and has no supply of energy other than the hydraulic energy. The stop valve is particularly suitable for use in hydraulic systems with conduits with a large nominal diameter and high pressures.
IPC 1-7
IPC 8 full level
F16K 5/06 (2006.01)
CPC (source: EP)
F16K 5/0673 (2013.01)
Citation (search report)
See references of WO 0238991A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0238991 A2 20020516; WO 0238991 A3 20020815; DE 10055342 A1 20020725; DE 10055342 B4 20070510; EP 1252465 A2 20021030
DOCDB simple family (application)
DE 0104143 W 20011107; DE 10055342 A 20001108; EP 01993784 A 20011107