Variable Orifice Ball Value
Patent, Filed 30 Jul 96, patented 25 Nov 97
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A variable orifice ball valve includes an external housing with a longitudinal fluid bore formed therethrough. A ball member is rotatably positioned within the external housing. The ball member can include first and second ball portions with the longitudinal fluid bore formed through the ball member and a pressure port formed through the ball member. An elastically expansible sleeve member is secured to an inner wall of the ball member, the elastically expansible sleeve member including opposing end portions and a middle section. The end portions are secured to an inner wall of the ball member, the elastically expansible sleeve member defining an expansible chamber between the inner wall of the ball member and the elastically expansible sleeve member such that a variable sized fluid port is formed on the inner surface of the elastically expansible sleeve member for restricting fluid flow by expanding the sleeve member upon introduction of a pressurized fluid through the fluid bore and pressure port.
- Pumps, Filters, Pipes, Tubing, Fittings and Valves