Patent ID: 8496027

Claim:
A lift valve ( 1 ; 1 . 1 ; 1 . 2 ; 1 . 3 ), particularly for process technology, with a valve housing ( 2 ; 2 . 1 ; 2 . 2 ; 2 . 3 ) consisting of at least one valve housing component ( 2 a ), with at least a first and a second connecting sleeve ( 2 b , 2 c ), which are connected to the valve housing component ( 2 a ) and produce a connection to the interior space thereof, with a connection opening ( 2 d ) arranged in the valve housing ( 2 ; 2 . 1 ; 2 . 2 ; 2 . 3 ) between the connecting sleeves ( 2 b , 2 c ), in or on which connection opening a seating area ( 2 e ) is formed, with a translationally displaceable monolithic closing element ( 4 ; 4 . 1 ) which co-operates with the seating area ( 2 e ) and controls the connection opening ( 2 d ), with one single actuation rod ( 4 a / 4 b ) fastened on the closing element ( 4 ; 4 . 1 ) and being sealingly guided out of the valve housing ( 2 ; 2 . 1 ; 2 . 2 ; 2 . 3 ) through a housing opening ( 2 h ) of the same in front of the connection opening ( 2 d ) and being connected to a driving piston ( 5 ; 5 *) of an actuator ( 3 ; 3 *), with a lantern housing ( 3 . 1 ) connecting the valve housing ( 2 ; 2 . 1 ; 2 . 2 ; 2 . 3 ) with the actuator ( 3 ; 3 *), with the actuator ( 3 ; 3 *) which has in a drive housing ( 3 a ) the driving piston ( 5 ; 5 *) that is displaceable against the force of a driving spring ( 7 ; 7 . 1 ; 7 . 2 ) and upon pressurization with a pressure medium (D), and with the actuation rod ( 4 a / 4 b ), which is enlarged in its cross section at least in the penetration region with the valve housing ( 2 ; 2 . 1 ; 2 . 2 ; 2 . 3 ), such that it accommodates there a part of the driving spring ( 7 ; 7 . 1 ; 7 . 2 ) at the closing element side thereof in a pot-shaped recess ( 4 c ) characterised in that the closing element ( 4 ; 4 . 1 ) opens towards the actuator ( 3 ; 3 *), and that the ends of the driving spring ( 7 ; 7 . 1 ; 7 . 2 ) rest against the actuation rod ( 4 a / 4 b ) on the one hand, and against a cover part ( 3 b ) on the other hand, respectively, said cover part ( 3 b ) delimiting the drive housing ( 3 a ) on that side of the driving piston ( 5 ; 5 *) which faces away from the closing element ( 4 ; 4 . 1 ).