If you’re studying up on valve types, then solenoid valves are definitely among the styles you’ll want to know more about. Here are answers to the top questions you’re probably already asking or should be asking about these unique and highly useful valves:

1. How Do Solenoid Valves Work?

   Solenoid valves are electromechanically operated, meaning that they are controlled through an electric current, and serve to control the flow of fluids or gases. They can distribute, shut off or mix the fluid or gas in question by use of a plunger-type piece (which is occasionally replaced by a pivot or rocker instead). There are two basic-types: two-port and three-port. In the case of the former, the valve serves to switch the flow of water or gas on or off. In the case of the latter, the valve switches output between one of two outlet ports. Solenoid valves can also be either “normally on” (the working fluid in question flows through unless the switch is activated) or “normally off” (the fluid is stopped unless the switch is activated).

2. What Are Solenoid Valves Used For?

   Solenoid valves are used in many applications, actually being the most frequently used kind of control in fluidics. You might see solenoids used in particular for radiator valves very commonly, but they also show up in as wide a range of systems as laundry machines and dry-cleaning equipment, compressors, vacuum pumps, fire sprinkler systems, medical and dental equipment, coffee machines, and steam boilers.

3. Which Kind Should I Buy?

   If you’re in the market for a solenoid valve, what should you be looking for? Well, Danfoss valves are extremely well known in the industry and provide excellent quality, so that’s definitely one brand you can trust. Danfoss has two lines of solenoid valves; one is a high-performance line for industrial applications, while the other is more economic. You may also want to look into Spence valves. If this is your first time buying, it’s worth spending some more on quality until you learn when you can use a more affordable option and when you need heavier-duty pieces.

Do you have anything to add about these important valves? Join the discussion or share your tips on choosing valves in the comments.