EP 0706623 A1 19960417 - SEAT FOR THE ROTATING SHAFT OF A VALVE
Title (en)
SEAT FOR THE ROTATING SHAFT OF A VALVE
Title (de)
PLATZ FÜR DEN ROTIERENDEN SCHAFT EINES VENTILS
Title (fr)
JOINT DE TIGE ROTATIVE D'UNE VANNE
Publication
Application
Priority
- NL 9301162 A 19930702
- US 9407332 W 19940630
Abstract (en)
[origin: WO9501526A1] The invention relates to a valve for a pipe or reservoir, comprising a housing, a shut-off element, a rotatable operating shaft which runs through the housing, and a primary seal on the shaft. Seen from the shut-off element a secondary seal is placed beyond the primary seal about the shaft. The secondary seal comprises a flexible bellows seal and a magnetic fluid seal ahead of and beyond which a fireproof shut-off ring is arranged about the shaft. Leakage from the pipe is detected with the help of a monitoring system. By means of a monitoring system it is checked whether or not leakage to the surroundings is taking place, whether maintenance should be carried out and whether the seal and/or portions thereof are intact.
IPC 1-7
IPC 8 full level
F16J 15/43 (2006.01); F16K 41/00 (2006.01); F16K 41/10 (2006.01)
CPC (source: EP)
F16J 15/43 (2013.01); F16K 41/003 (2013.01); F16K 41/10 (2013.01)
Citation (search report)
See references of WO 9501526A1
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
WO 9501526 A1 19950112; AU 7252694 A 19950124; EP 0706623 A1 19960417; NL 9301162 A 19950201
DOCDB simple family (application)
US 9407332 W 19940630; AU 7252694 A 19940630; EP 94922048 A 19940630; NL 9301162 A 19930702