Instrumentation & measurement
Solenoid valves
Solenoid valves are electrically operated valves that open or close a line, or switch flow between ports, when a coil is energised. They control water, air, gases, fuel oil, steam and vacuum in process and machine systems.
Overview
A solenoid valve uses an electromagnetic coil to move a plunger, either acting directly on the orifice or piloting a diaphragm or piston that opens the main seat. Direct-acting valves work from zero pressure, while servo-assisted designs use line pressure to switch larger flows. The range covers general-purpose 2-way and 3-way valves, normally closed and normally open, with dedicated valves for natural gas and LPG, fuel oil and diesel burners, steam and hot water, vacuum and cryogenic service, plus pinch valves, pulse valves and valves with a NAMUR interface.
Selecting the right solenoid valve
Start with the medium, its temperature and the pressure range, including the minimum pressure, which decides between direct-acting and servo-assisted types. Then choose the body material (brass, aluminium, stainless steel or plastic) and the seal (NBR or Viton) for compatibility. Finally confirm port size and thread, normal position, coil voltage and enclosure, and any hazardous-area need.
Range overview
- Types and variants
- Direct-Acting and Servo-Assisted Valves
- 2-Way and 3-Way, NC and NO Valves
- Natural Gas and LPG Valves
- Fuel Oil and Diesel Burner Valves
- Steam and Hot Water Valves
- Vacuum Valves
- Stainless-Steel and Plastic-Body Valves
- Pinch Valves
- Pulse Valves
- NAMUR Pilot Valves
- Materials and grades
- Brass
- Aluminium
- Stainless Steel AISI 304
- Plastic
- Polypropylene
- NBR Seals
- Viton Seals
- Size range
- 1/8 Inch to 1/2 Inch Ports
- Connections and interfaces
- BSP Threads
- NPT Threads on Request
- Features
- Servo-Assisted, Direct-Acting, Diaphragm, Pinch and Pulse Types
Exact specifications depend on the variant, material and size. Confirm ratings and certification against the datasheet or with our engineers before ordering.
Applications
- Fuel Oil and Diesel Burners
- Natural Gas and LPG Lines
- Steam and Hot Water
- Vacuum Systems
- PET Blow Moulding
- Cryogenic Service
Information that speeds up a quotation
Share what you know. Anything you are unsure of can be marked “not known” — our engineers will help confirm it.
- Fluid
- Control range
- Voltage
- Pressure
- Port size
- Signal
- Certification
Need a datasheet?
Add this family to your enquiry list and mention the variant — we will send the relevant technical documents.
Pneumatic and process controls
Related and alternative families
Proportional flow controllers
Proportional flow controllers regulate flow continuously in response to a control signal, opening a valve by the amount needed rather than simply…
Pressure-independent control valves
Pressure-independent control valves (PICVs) combine a differential pressure regulator and a control valve in one body, so flow through a coil or…
Pneumatic cylinders
Pneumatic cylinders convert compressed-air pressure into linear motion for pushing, pulling, clamping and positioning in automated machines. The range covers compact single-acting…
Air-line filters and regulators
Compressed-air line filters remove water, oil, dirt and odour from compressed air to protect valves, cylinders, instruments and other equipment downstream of…
Air dryers and filter elements
Compressed-air dryers remove water vapour from compressed air to prevent condensation in lines and equipment, and replaceable filter elements keep line filters…
Speed controllers and actuators
Valve actuators automate ball, butterfly and plug valves and dampers using air or electric power, and hydraulic speed controllers smooth and regulate…
Frequently asked questions
What information do you need to select a solenoid valve?
Tell us the medium, its temperature, the minimum and maximum operating pressure, the required flow or port size, the thread type, whether the valve should be normally closed or normally open, the coil voltage (AC or DC) and the enclosure or hazardous-area requirement. For a replacement, the existing valve's nameplate details and photographs help us match it.
What is the difference between direct-acting and servo-assisted valves?
A direct-acting valve opens the orifice with the coil alone, so it works from zero pressure but is limited to smaller orifices and pressures. A servo-assisted valve uses line pressure acting on a diaphragm or piston to open a larger seat, but needs a minimum pressure difference to operate. Applications with low or zero pressure usually need a direct-acting design.
Ready to specify solenoid valves?
Send the details you have — quantities, sizes, drawings or a part number. Unknowns are fine.