What is a solenoid valve?
The definition of a solenoid valve is an electro-mechanical valve that is commonly employed to control the flow of liquid or gas. Solenoids are defined as either pilot operated or direct acting. Pilot operated valves, the most widely used variety, utilise system line pressure to open and close the main orifice in the valve body. While Direct operated solenoid valves directly open or close the main valve orifice, which is the only flow path in the valve. They are used in systems requiring low flow capacities or applications with low pressure differential across the valve orifice.
How solenoid valves operate
How a solenoid valve works is by controlling the flow of liquids or gases in a positive, fully-closed or fully-open mode. They are often used to replace manual valves or for remote control. Solenoid valve function involves either opening or closing an orifice in a valve body, which either allows or prevents flow through the valve. A plunger opens or closes the orifice by raising or lowering within a sleeve tube by energising the coil.
Solenoid valves consist of a coil, plunger and sleeve assembly. In normally closed valves, a plunger return spring holds the plunger against the orifice and prevents flow. Once the coil is energised, the resultant magnetic field raises the plunger, enabling flow. When the coil is energised in a normally open valve, the plunger seals off the orifice, which in turn prevents flow.
Where is a solenoid valve used?
Solenoid valve applications include a broad range of industrial settings, including general on-off control, plant control loops, process control systems and various original equipment manufacturer applications, to name but a few.
Perhaps unsurprisingly then, Bürkert solenoid valves can be found in many different sectors:
- Water supply
- Treatment of drinking water
- Waste water treatment
- Purification/ treatment of grey and black water
- Machine and plant engineering
- Cooling, lubrication and dosing
- Building services
- Large heating systems, climate control
- Safety engineering
- Water mains protection and fire extinguishing systems
- Pressure relief and drainage
- Fuel supply
- Transport and tank facilities
- Firing systems
- Oil and gas burner control
- Gas chromatography
- Gas mixture regulation
- Blood analysis instruments
- Control of cleaning processes
Bürkert solenoid valves
Bürkert stands for quality and competence in the sector of fluid technology. Our products are used wherever fluids and gases need to be measured, controlled and regulated. Bürkert has been developing and producing solenoid valves for more than 60 years. In doing so we use recognised technical principles and unique technologies with a common goal: to fulfil your requirements. Click here to view our solenoid valves brochure.
We customise our valves to fit your applications and therefore offer you the optimal solution for your needs. That is why Bürkert valves can be found in virtually every industry. From welding robots to waterworks, from dust removal in mining operations to cabin pressure control in aircraft – everything is possible with our valves as a reliable component in your system. Whether you need a single valve, valve blocks or customised solutions, our entire product line is oriented toward ensuring controlled handling of liquids and gases.
Our products are designed to deliver:
- High flexibility due to modular design
- Diverse choice of materials
- High reliability and long service life
- Low environmental impact
When it comes to working with liquids and gases, we are at your side. As a manufacturer of sophisticated products, as a problem-solver with an eye for the big picture and as a partner offering you reliable advice.
If you'd like more information, please call us on +44 1285 648 720, email firstname.lastname@example.org or fill in the form below.