A proportional flow control valve is a valve that is qualified to adjust the output pressure with respect to the variation of electrical input. These valves are generally also known as electrohydraulic valves and they have some resemblances with the hydraulic servo valves like both of them are electrically controlled through the system. In this valve, the spool of the valve is operated with the help of a given solenoid. There is a major difference between a servo valve and a proportional valve that include servo valves used in closed-loop systems, while proportional valves are used in open and closed-loop systems. A proportional gas flow control valve can be used as a direction control or pressure control valve but mainly these valves are used as direction control valves. The process is done with the assistance of an electric signal. The flow direction and flow rate of the valve are impacted by the control signal.
An electronic proportional valve delivers a change in output pressure or flows in the same ratio as the change in the input. For example, if the input pressure doubles then the output pressure will also double. In this article, you will learn the uses of proportional flow control valve in industries.
What are the key features of the fluid control valves in industries?
Proportional liquid Valves are served for applications where output pressure will change either in steps or continuously. Stepped output pressure indicates the pressure is maintained at one value before the pressure is increased to another value. While continuous output pressure is where pressure is continually increased at a set point.
A proportional flow control valve can be interconnected. For example, the output pressure from one being used as an input to another. Numerous programs are available with onboard diagnostics to make them highly appropriate to Industry system design.
These proportional valves are dependable, cost-effective (particularly air-pilot operated), and offer fast response and constant control.
What are the benefits of proportional valves in industries?
A proportional flow control solenoid valve can help decrease cycle times, by fast achieving a steady pressure. They have a quick, precise response, which will improve the efficiency of the quality. They also offer repeatable control and pressure output by giving an expected response each time.
What are the key considerations for the selection of a digital flow control valve?
There are some basic parameters of a proportional flow control valve to consider. Firstly, what is controlled is it? Pressure, flow, or some other characteristic. What input and output pressure range will be required by these valves, and at what range of flow rates through the system in the industries? What is the likely operating temperature that the liquid flow control valve will experience? Are there other environmental considerations, such as a wet and dirty application?
It is important to consider about liquid flow control valve is that if the process is static, step-by-step, or dynamic. This may very well dictate the response time required and hysteresis performance. Cost may be a concern and, as stated, air pilot-operated valves are extremely cost-effective.