Fluid handling – Convertible – Units interchangeable between alternate locations
Patent
1998-01-09
1999-08-17
Lee, Kevin
Fluid handling
Convertible
Units interchangeable between alternate locations
251209, 25131516, 251127, F16K 4704, F16K 512
Patent
active
059378905
ABSTRACT:
A volume control insert for a ball valve that is attachable in a fluid passage of the ball valve to provide a predetermined flow condition therethrough. The insert has a convex shape corresponding to an outer surface of a valving member seated in the ball valve, and has a connector disposed on its periphery to attach the insert across the fluid passage. The insert has an elongate slot through it, such as an oblong or parabolic shaped opening, adapted to provide the predetermined flow condition. A plurality of such inserts may be furnished with a ball valve to provide a range of predetermined flow conditions that may be individually selected for the ball valve. Preferably, each of the inserts include a parabolic opening therethrough, the parabolic opening providing a substantially equal percentage flow characteristic between maximum and minimum flow rate conditions when the valving member is rotated each degree of movement between its full open and full closed positions.
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Griswold Controls, Inc.
Lee Kevin
LandOfFree
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