Hydraulic shut-off valve
AssigneeMerck Patent GmbH
InventorsAndreas Szeteli, Werner Büttner, Martin Benzinger
Life of this patent
Estimating the term…
Abstract
In a hose coupling with a coupling sleeve and a coupling nipple and a valve insert (9) provided therein, the valve spring, the holding element and the valve seat of the valve insert are designed as a one-piece component, and the valve spring (11) has a cavity (21) which is closeable.
Claims12
Hydraulic shut-off valve with a valve insert (9) which comprises a single valve spring (11), a holding element (10) and a valve seat (12), and the valve spring (11), the holding element (10) and the valve seat (12) are designed as a one-piece component, the valve spring (11) being designed as a body (22) which has a cavity (21), characterized in that the cavity (21) is closed in gas-tight fashion by means of a screw plug (20) or by means of a cover.
Hydraulic shut-off valve according to claim 4, characterized in that the bellows (16) has an undulating or zig-zag wall (17).
Dependencies are inferred from the claim text.