Valve arrangement adaptable to meet different leakage requiremen

Details Valve arrangement adaptable to meet different leakage requiremen Valve arrangement adaptable to meet different leakage requiremen

1997-05-20

1999-11-09

Chambers, A. Michael

Fluid handling

With casing, support, protector or static constructional...

Jacketed

251214, 25131514, F16L 700

Patent

active

059794917

ABSTRACT:
A valve arrangement including a housing (2) and a shut-off element (8) with which a shaft (10) is rotatably coupled, the passage of the shaft through the housing (2) being sealed by a sealing element (32). In addition to the first sealing element (32), which is disposed in an annular space between the shaft (10) and the housing (2), a second sealing element (42) may optionally be disposed at least partially within an annular body (3) connected to the housing (2). The valve arrangement is provided in the interior of the housing with a lining (20, 21). The lining (20) of the housing (2) extends at least to the first sealing element (32) with which it is in direct contact. The first sealing element (32), and the optional second element (42), if present, can be compressed by a bushing (48) which is movable axially along the shaft (10). The valve arrangement of the invention has the advantage that it can be upgraded at low manufacturing cost to minimize leakage rates and satisfy strict safety requirements.

REFERENCES:
patent: 3073336 (1963-01-01), Johnson
patent: 3334650 (1967-08-01), Lowrey et al.
patent: 4696323 (1987-09-01), Iff
patent: 4886241 (1989-12-01), Davis et al.
patent: 4930748 (1990-06-01), Gonsior
patent: 5178363 (1993-01-01), Icenhower et al.
patent: 5263682 (1993-11-01), Covert et al.
patent: 5476117 (1995-12-01), Pakula
patent: 5634486 (1997-06-01), Hatting et al.

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