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Title:
【発明の名称】流体の流れの量を制御する装置
Document Type and Number:
Japanese Patent JPH0789300
Kind Code:
B2
Abstract:
Device for controlling the quantity of fluid flow through a pipe, said device being provided with a control valve having a valve element whose position relative to the valve seat belonging to it directly or indirectly determines the quantity of fluid flow through the pipe. The valve element is movable at one side under the influence of a progressive spring in one direction relative to the valve seat and at the other side by a controllable actuation element against the spring force in the opposite direction relative to the valve seat. The device is also provided with a pressure reducing valve whose valve element is controlled by an actuation mechanism to which signals are provided corresponding to the pressures upstream and downstream of the first control valve, or pressures proportional thereto, in such a way that the pressure difference over the first control valve is kept constant.

Inventors:
Lambertous Evskamp
Piebren yoosuma
Application Number:
JP28805685A
Publication Date:
September 27, 1995
Filing Date:
December 23, 1985
Export Citation:
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Assignee:
Bronckhorst High-Tech BV
International Classes:
F16K31/06; G05D7/03; F16K39/02; G05D7/00; G05D7/06; (IPC1-7): G05D7/06
Domestic Patent References:
JP51120376A
JP596212U
Attorney, Agent or Firm:
Heiyoshi Odashima