Title:
FLUID FLOW CONTROL VALVES
Document Type and Number:
WIPO Patent Application WO2002038966
Kind Code:
A3
Abstract:
A fluid flow control valve system has a plurality of pairs of 3 port, 2 position (3/2) control valves (6, 6') each valve being movable between its two positions by a pair of electrically-operable actuators (1, 2). A logic controller selectively generates electrical control signals for independently controlling operation of the pairs of 3/2 control valves, and a circuit means (11) is associated with each 3/2 control valve pair (6, 6') to receive the control signals and provide electrical outputs to either of the actuators (1, 2) of each 3/2 control valve of each pair. Variable switch means (14) forming part of the circuit means (11) pre-select the actuators (1, 2) to which the output is applied. Varying the switch means (14) programmes the fluid output mode of each 3/2 control valve pair to provide any one of a number of different effective valve types.
Inventors:
BRAMLEY HUGH CHRISTOPHER (GB)
PATIENT CHRISTOPHER SIMON (GB)
PATIENT CHRISTOPHER SIMON (GB)
Application Number:
PCT/GB2001/004820
Publication Date:
December 27, 2002
Filing Date:
October 30, 2001
Export Citation:
Assignee:
IMI NORGREN LTD (GB)
BRAMLEY HUGH CHRISTOPHER (GB)
PATIENT CHRISTOPHER SIMON (GB)
BRAMLEY HUGH CHRISTOPHER (GB)
PATIENT CHRISTOPHER SIMON (GB)
International Classes:
F15B13/00; F15B13/08; F15B21/08; (IPC1-7): F15B13/00; F15B21/08; F15B21/02; F15B21/00
Foreign References:
| EP0955473A1 | 1999-11-10 | |||
| GB2301167A | 1996-11-27 | |||
| DE29810091U1 | 1998-12-10 |
Other References:
DEPPERT W ET AL: "PNEUMATISCHE STEUERUNGEN, PASSAGE", PNEUMATISCHE STEUERUNGEN. EINFUHRUNG UND GRUNDLAGEN PNEUMATISCHER STEUERUNGEN, VOGEL,WURZBURG,, DE, PAGE(S) 148-149, XP000904516
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