Dema Solenoid valves
When the solenoid coil is energized, the plunger is pulled up, thus opening the small "pilot port" in the center of the diaphragm plate. This releases the pressure on top of the diaphragm allowing incoming pressure to lift it off the larger center port. When the coil is de-energized, the solenoid plunger is pushed down by the kick-off spring and closes the pilot port. Fluid passes through the small diaphragm bleed hole until pressure is equalized on both sides of the diaphragm to shut off the larger port.
Title: How do the Dema Solenoid valves work?
Description: Operation of the Dema Solenoid valves
Published: 8/28/2009
Last Edited: 1/20/2023
Information disclaimer:
The information contained in this article is for general information purposes only. The information is provided by
United States Plastic Corp. and while we endeavor to keep the information up to date and correct, we make no representations or
warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with
respect to the website or the information, products, services, or related graphics contained on the website for any purpose.
Any reliance you place on such information is therefore strictly at your own risk.
In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss
or damage, or any loss or damage whatsoever arising from loss of materials, time or profits arising out of,
or in connection with, the use of this information.