Flap valve having dual piston sealing rings

Details Flap valve having dual piston sealing rings Flap valve having dual piston sealing rings

2006-03-07

2006-03-07

Bastianelli, John (Department: 3751)

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

C251S175000, C251S306000

Reexamination Certificate

active

07007926

ABSTRACT:
The invention relates to a valve comprised of a housing with a valve seat for a flap that is rotatably mounted on a drive shaft. The exterior of the flap is provided with a first piston sealing ring and a second piston sealing ring that are placed inside an encircling groove of the flap. Each sealing ring is provided in the form of a metal ring. The first ring has a first gap and the second ring has a second gap that are not aligned with one another. The invention also relates to the use of said valve.

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