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Media Coverage

Pressure-reducing system for pipeline


Journal of the Japanese Association for the Study of Irrigation, Drainage and Reclamation Engineering
No.108, published on Apr. 1, 1997

Pressure-reducing system for pipeline

Pressure-reducing system for pipeline

Reprinted by permission of the Japanese Association for the Study of Irrigation, Drainage and Reclamation Engineering

Pressure-reducing system for pipeline

Masaki Saito

Crown Engineering Co., Ltd.

Yoshihiro Terakawa

Same as above

Noriaki Tsunoda

Same as above

Hitone Inagaki

Same as above


Abstract (English translation of the original text)
The following is an introduction to a low pressurization system for agricultural irrigation based on the safe use of polyvinyl chloride piping at the terminal side of the pipeline.
The combination of "the cut off of hydrostatic pressure using conventional or new type automatic pressure reducing valves" and "the countermeasures for water hammer pressure with airbags or safety valves" is proposed as a pipeline pressure reduction system.
Furthermore, an inline pressure reduction system that reduces systematic internal pressure in phases through a serial arrangement of new type automatic pressure reducing valves is offered.


For details of this new type automatic pressure reducing valve, please refer to
Constant Pressure Valve (pressure reducing valve) UFSP type
Constant Pressure Valve (pressure reducing valve with over-discharge cutoff function) UFSP-C type

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