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US 6,783,111 B2Granted
Dual lift system
AssigneeMegtec Systems, Inc.
InventorsJames T. Cash, Ken Wendorf, Glenn Schmidt
Life of this patent
Estimating the term…
Abstract
Valve and valve lift system suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. In a preferred embodiment, the valve is sealed with pressurized air during its stationary modes, and unsealed during movement to reduce valve wear.
Claims6
A system for reducing friction during movement of a valve, comprising:
- a flow distributor;
- a valve seat;
- a drive associated with said flow distributor for moving said flow distributor from a first stationary position to a second stationary position;
- a source of compressed gas in fluid communication with said flow distributor;
- a first regulator for supplying said compressed gas to said flow distributor at a first pressure sufficient to seal said flow distributor against said valve seat when said flow distributor is in either said first or said second stationary position;
- and
- a second regulator for supplying said compressed gas to said flow distributor at a second pressure less than said first pressure when said flow distributor moves between said first and second stationary positions.
4 more elements
A system for reducing friction during movement of a valve, comprising:
- a flow distributor;
- a valve seat;
- a drive associated with said flow distributor for moving said flow distributor from a first stationary position to a second stationary position;
- a source of compressed gas in fluid communication with said flow distributor;
- a pressure regulator for supplying said compressed gas to said flow distributor at a first pressure sufficient to seal said flow distributor against said valve seat when said flow distributor is in either said first or said second stationary position and for supplying said compressed gas to said flow distributor at a second pressure less than said first pressure when said flow distributor moves between said first and second stationary positions.
2 more elements
Dependencies are inferred from the claim text.