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1. (WO2001004714) FLOW REGULATOR

Pub. No.:    WO/2001/004714    International Application No.:    PCT/EP2000/006531
Publication Date: Fri Jan 19 00:59:59 CET 2001 International Filing Date: Tue Jul 11 01:59:59 CEST 2000
IPC: G05D 7/01
Applicants: DIETER WILDFANG GMBH
HART, Keith
Inventors: HART, Keith
Title: FLOW REGULATOR
Abstract:
The invention relates to a flow regulator (1) comprising a regulator housing (2) having a control peg (4) or control cone in a passage channel that encompasses an annular flow restrictor (5) made of elastic material. Said flow restrictor (5) defines a control gap (6) located between itself and at least one part that is fixed to the housing. The passage cross section of said gap can be modified by the deformation of the flow restrictor (5) resulting from the difference in pressure during cross-flow. Spaced recesses (7, 8) oriented in the direction of flow are provided in peripheral direction on the surfaces of the part fixed to the housing defining the control gap (6). The flow regulator (1) according to the invention is characterized in that the control gap (6) is provided between the flow restrictor (5) and the inner surface of the regulator housing (2) defining the passage channel and between the flow restrictor (5) and the peripheral surface of the control peg (4) or control cone and in that regulation recesses are provided on the inner surface of the regulator housing (2) and on the peripheral surface of the control peg (4) or control cone. The flow regulator (1) according to the invention is also characterized in that the desired flow rate per unit of time is achieved at comparatively low liquid pressure and in that it remains practically constant in case of increased and greatly fluctuating liquid pressures.