Ball valve with high damping of the noise due to fluid passage

Details Ball valve with high damping of the noise due to fluid passage Ball valve with high damping of the noise due to fluid passage

2006-10-10

2006-10-10

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C138S042000

Reexamination Certificate

active

07117894

ABSTRACT:
A regulation ball valve for a fluid flow in which a ball is rotatable to bring a passage thereof from a limit position of full opening of the valve to a limit position of full closure of the valve and vice versa. Present in the passage are perforated baffles that at least at an intermediate position between the limit positions are passed through by a fluid flow. The perforated baffles include two perforated metal sheets between which a layer permeable to the fluid is disposed. In particular the layer can advantageously be formed of chaotically-disposed filaments as in steel wool.

REFERENCES:
patent: 4102357 (1978-07-01), Charlton
patent: 4429714 (1984-02-01), Hughes et al.
patent: 4530375 (1985-07-01), Bey
patent: 4805656 (1989-02-01), Cole et al.
patent: 5070909 (1991-12-01), Davenport
patent: 5937901 (1999-08-01), Bey

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