Review on 💧 HFS Electric Solenoid Valve for Water - Hydraulics, Pneumatics, and Plumbing by Anthony Gupta

This is a traditional diaphragm type solenoid valve (no coil). I haven't used this one, but I've used several similar ones in the past. They work. The one I bought this time is my first with commercial size 1/4" fittings. I used them primarily for water but this will be for the air line. The coils are removable, so I'm assuming the actual part of the valve (for a given port size) is the same, and they just swap out the coils for different voltages. The wires aren't too long, so you'll most likely need to lengthen them somehow. BTW, 5-7 KGF/CM2 (kilogram force per square centimeter) equals 71 to 99 psi, but the label on the valve I received says "MIN. 0 kg/cm2, MAX. 10 kg/cm2" , which corresponds to 0 to 142 psi. and probably prolonged pressure on the arrow's "tail" (cast brass) and the "driven" side of your tubing on the arrow's pointed end, i.e. the flow is the same as the arrow's direction. In the unrouted ports you can see that the "tail" side is "above" the diaphragm which is the control part of the valve and therefore there must be a higher pressure to close (this is a normally closed Valve).