Double seat valve
A double-seat valve, valve seat technology, applied in the direction of lift valve, valve device, mechanical equipment, etc.
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[0053] Double-seat valve 1 of the present invention ( figure 1 ) essentially comprises a valve chamber 10 with a first and a second valve chamber part 1a or 1b, two independently mutually movable closing parts 3 and 4 with respectively associated displacement rods 3a or 4a and a valve seat The ring 2, seat ring establishes communication between the valve chamber parts 1a, 1b via a communication opening 2c on the inside.
[0054] In the closed position of the double-seat valve 1, the first closing part 3 (active closing part), which is designed as a sliding piston, is accommodated sealingly in a first seat surface 2a formed by the communication opening 2c, which is configured as Cylindrical seating surface. For this purpose, a first sealing ring 6 is arranged in the sliding piston 3 , which interacts with the first valve seat surface 2 a only by means of a radial offset (radial sealing ring in sliding engagement). In the closed position of the double-seat valve 1 , the secon...
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