Can solenoid valves only be used in pneumatic actuators?
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Today, a customer called and asked whether it’s possible to control the opening and closing of a valve using an electromagnetic valve without needing a gas supply, for use with control valves. Is such a thing possible?
This post was last edited by ylb913 on 2016-5-12 at 12:36. Our systems do use solenoid valves to control the opening and closing of valves via liquid pressure; this is the case with the self-cleaning filters, where the pressure of the medium itself or pressure release is utilized, with no external power source apparent on the surface.
Self-acting control valves do not require a gas source.
Solenoid valves don’t require a gas source in the first place
Solenoid valves can be used directly for opening and closing pipelines, as their diaphragms made of different materials offer incomparable advantages~~
The medium used in solenoid valves can be water, oil, or corrosive liquids. There are several types of solenoid valves: those with metal pistons and those that are direct-acting; the latter are operated by the electromagnetic force generated by the coil to open and close, but they are suitable for applications with small flow rates and low pressures； Metal piston pilot-operated solenoid valves are opened and closed by the magnetic force of the solenoid coil and the pressure of the fluid within the pipeline; they are suitable for applications with pressure differences, at both high and low pressures, as well as for large flow rates ； Finally, there is the step-by-step direct-acting solenoid valve that starts with zero pressure difference from Chase, but its maximum operating pressure cannot exceed 3 MPa
Solenoid valves can have their opening and closing controlled by other media