Results 211 to 220 of about 55,803 (255)

A practical solution to the problem of noise and vibration in a pressure-reducing valve

Experimental Thermal and Fluid Science, 1993
Abstract The mechanical vibration that is occasionally found in gas pressure reducing valves can be eliminated by careful design of the valve plug and seat. A pressure-reducing valve was found to be excessively noisy, producing a sound pressure level of 117 dB when throttling air at an inlet-to-outlet pressure ratio of 15; as a result the valve ...
A. Amini, I. Owen
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Simulation research of proportional pressure-reducing valve

International Conference on Advanced Technology of Design and Manufacture (ATDM 2010), 2010
The electro-hydraulic brake valve is a key component in electro-hydraulic brake system of the wheeled construction vehicles. Its structure and performance parameters have great influence on the braking system. At present, foreign electro-hydraulic braking system used by the electro-hydraulic brake valve structurally similar to direct-acting ...
null Yao Guangwei, null Lin Muyi
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Gas pressure reducing valve noise

Journal of Sound and Vibration, 1975
The application of Lighthill's eighth power of velocity relationship, for the noise generated by turbulent jets, to the special case of noise generated by gas pressure reducing valves, is discussed. An equivalent relationship expressed in convenient valve parameters is developed. Some experimental results are presented which indicate a reduced acoustic
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Pressure Reducing Valves in Pipe Network Analysis

Journal of the Hydraulics Division, 1976
The three separate systems of equations that are in common use in solving steady flow problems in pipe networks are described and the method for including pressure reducing valves in each of these systems is given. The emphasis is on use of efficient computer oriented methods.
Roland W. Jeppson, Allen L. Davis
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Fatigue Reliability Analysis of Pressure-Reducing Valve

Advanced Materials Research, 2011
The paper is to develop a new approach to analyze the reliability of pressure-reducing valve basing on commercial software Ansys. After introducing the work principle of the pressure-reducing valve containing membrane, the mechanical model of the membrane acted by pressure caused by turbulence is established, base on which the simulated model built in ...
Jian Chun Ding, Fa Guo Sun
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Improved Control of Pressure Reducing Valves in Water Distribution Networks

Journal of Hydraulic Engineering, 2008
The behavior of transients in water pipe networks is well understood but the influence of modulating control valves on this behavior is less well known. Experimental work on networks supplied through pressure reducing valves (PRVs) has demonstrated that, in certain conditions, undesirable phenomena such as sustained or slowly decaying oscillation and ...
Prescott, Simon L., Ulanicki, Bogumil
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Dynamic research of Pressure-reducing Valve

2021
The principle of work of the Pressure-reducing Valve is shown as an example of linear automatic control system. The dynamics of a constant pressure control device is considered. The low internal resistance of a pressure source for the whole range of fluid flow is assumed.
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Development of a Novel High Pressure Electronic Pneumatic Pressure Reducing Valve

Journal of Dynamic Systems, Measurement, and Control, 2010
Pressure reducing valve (PRV) is one of the critical components in high pressure pneumatic systems. Nowadays, manually operated PRVs have been widely used, but there is still no universal electronic PRV. Thus, we proposed a novel high pressure electronic pneumatic pressure reducing valve (EPPRV) whose inlet pressure (pi) is up to 31.5 MPa.
Xu Zhipeng, Wang Xuanyin
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Ultra-High-Pressure Pneumatic Pressure Reducing Valve

2019
The general industrial pneumatic system pressure is less than 8 MPa. Aerospace and other extreme environments require pneumatic energy and its control valves to promote the development of small volume, lightweight, high-performance ultra-high-pressure pneumatic control valves. The pressure of the self-contained pneumatic energy device has reached 15–80
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The Analysis and Design of Hydraulic Pressure-Reducing Valves

Journal of Engineering for Industry, 1967
This paper presents the static and dynamic characteristics of single-stage pressure-reducing valves and establishes design criteria. The dynamic analysis was accomplished using frequency-response techniques. A simplified loop gain function is developed for the valve and consists of a loop gain constant and two dominant time constants.
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