Transient effects of self-adjustment of pressure reducing valves

Research Area: Hydro Year: 2015
Type of Publication: In Proceedings Keywords: Transients, High density polyethylene pipes; Management strategies; Pressure reducing valves; Pressure-reducing valve; Pressurized pipes; Replacement projects; Transient behavior; Transient characteristic, Pressure regulators
Editor: Boxall J., Kapelan Z., Ulanicki B. Volume: 119
Number: 1
Pages: 1030-1038
ISSN: 1877-7058
cited By 0; Conference of 1st YAWL Symposium 2013 ; Conference Date: 7 June 2013
Pressure control strategy through Pressure Reducing Valves (PRV) has been deeply investigated as management strategy, aimed at water leakages reduction avoiding very expensive pipe replacement programs. On the contrary, few experimental data are available in literature, with regard to PRV transient behavior in terms of its response to incoming pressure waves, as well as the time required for achieving the pressure set point. In this paper, the results of some experimental tests are presented. The PRV is installed in a single high density polyethylene pipe and transients are generated by operating the downstream end valve. Two types of tests are considered: a partial valve closure and opening simulating a water demand decrease and increase, respectively. The analysis of the experimental pressure traces points out the valuable effects of the PRV on transient characteristics with respect to the case of a partially closed in-line valve with a constant opening degree. © 2015 The Authors. Published by Elsevier Ltd.
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