F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/69
F16K 25/02 (2006.01) F16K 1/44 (2006.01) F16K 37/00 (2006.01)
Patent
CA 1287550
ABSTRACT OF THE DISCLOSURE The invention relates to both a process and an apparatus for the control of a leakage cavity of a valve which is fitted with two sealing places which are disposed in series and in the closed position of the valve prevent the overflow of fluid from one valve casing part into another one, with the leakage cavity disposed between the sealing places and connected to the outside of the valve through the valve casing, wherein the closed position of the valve the connection of the leakage cavity with an inside space of the valve casing parts is sealed by a closing member cooperating with the two sealing places. By the proposed process and the apparatus for its realization it is inter alia guaranteed that the connection between the leakage cavity and the inside space can be controlled also in positions other than the closed position of the valve. This is achieved according to process technique in that the connection between the leakage cavity and the inside space in positions other than the closed position of the valve can be controlled in the same manner as in the closed position by a device which substitutes as to effect the closing member regarding its interaction with the leakage cavity. An apparatus for performing the inventive process provides inter alia for this purpose that a locking piece (5) which is disposed to the closing member (4) relatively movable in direction of the degree of its freedom of motion, controls the connection between the leakage cavity (6) and the inside space (1,2) (fig. 21). The invention in addition indicates solutions as to how a dynamically loaded seal assembly of a valve, particularly a valve of the category characterized in the introduction, can be cleaned without fault even in critical areas of the seals.
556560
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Mieth Hans O.
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