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    Technical information on Tameson valves
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  3. Technical Information Center

Technical Information Center

In the technical information center you will find various articles related to fluid control. Whether you're looking for background articles about the design principles of valves, calculators to dimension valves, or chemical resistance of materials, this reference will guide you. If you can't find the information you're looking for, please contact our customer service.

Technical info products

Product Information

  • Solenoid valvesOverview
  • Ball valves
  • Check valves
  • Pneumatic solenoid valves
  • Angle seat valves
  • Needle valves
  • Hoses
  • Pressure gauges
  • More product information articles
Technical info engineering

Selection Criteria & Wizards

  • Solenoid and electric ball valve wizard
  • Certifications & approvals
  • Flow principles (valve sizing, Kv-value, flow rate)
  • Chemical resistance of materialsPopular
  • Valve sizing calculatorPopular
  • Housing material selection criteriaInfographic
  • Seal material selection criteriaInfographic
  • Choosing an AC or DC coil for a solenoidPopular
  • More selection criteria & wizard articles
Technical info applications

Application Examples

  • Central heating
  • Car wash
  • Compressed airOverview
  • Irrigation
  • Vacuum
  • Pneumatic products & applicationsOverview
  • Breweries
  • Hot water and steam
  • More application example articles
Technical info installation & troubleshooting

Installation & Troubleshooting

  • Solenoid valve installation
  • Electric ball valve installation
  • Troubleshooting solenoid valves
  • Replace a coil of a solenoid valve
  • How to prevent solenoid valve noisesPopular
  • Solenoid valve troubleshooting: common failure modesInfographic
  • More installation & troubleshooting articles

Selection Wizard

Selection Wizard

Complete the questions to find suitable valves directly:

  • 2-way
  • 3-way

2-Way Solenoid Valve 2-Way Solenoid Valve
2-Way Electric Ball Valve 2-Way Electric Ball Valve
Solenoid Valve or Ball Valve?
Solenoid Valves: 2-Way Solenoid Valve
The valve is actuated with an electric current through the solenoid (electromagnet).
  • Switches directly.
  • From 1/8 inch up to 2 inch.
  • Normally Closed or Normally Open.
  • Only for clean media.
  • Uses energy as long as electrically energized.
  • (Semi-)direct operated: from 0 bar pressure differential.
  • Indirect operated: from ±0.5 bar pressure diff.
  • Only one direction of pressure.
  • Brass, Stainless Steel or Plastic housing.
  • EPDM, FKM, NBR of PTFE seals.
Electric Ball Valves: 2-Way Electric Ball Valve
The flow is controlled with a drilled sphere (ball) which rotates around its axis, perpendicular to the bore. The ball rotates with the help of an electric motor.
  • Operates from 0 bar.
  • Close gradually (±10s).
  • Energy efficient.
  • 1/2, 3/4 or 1 inch.
  • For both flow directions.
  • Brass Housing / PTFE sealing.
  • Less sensitive to dirt.

NC = Normally Closed (most chosen): The valve is closed when the coil is not electrically energized.
NO = Normally Open: The valve is open when the coil is not electrically energized.
 Solenoid Valve System
Indirect operated solenoid valves need a pressure differential over the inlet and outlet port for proper operation. If the pressure differential is too low (f.e. a gravity fed system or a closed circuit), only (semi-)direct operated solenoid valves can be used. These operate from a zero bar pressure differential.

The type of medium defines the material choice of the valve body and seals. By selecting 'Other', you can choose the material for the valve body and seals.
Tip: Use the material table.

Most valves are provided with internal thread (BSPP = British Standard Pipe Parallel). Use the table as a guideline for sizing:
Valve Pipe ∅
1/8 inch ± 4 - 8 mm
1/4 inch ± 6 - 12 mm
3/8 inch ± 8 - 15 mm
1/2 inch ± 10 - 16 mm
3/4 inch ± 15 - 22 mm
1 inch ± 20 - 30 mm
1½ inch ± 25 - 50 mm
2 inch ± 40 - 60 mm

Solenoid valves are supplied with a coil of choice for alternating current (AC) or direct current (DC).
View products

On/Off 3-point
Difference between On/OF and 3-point controls

Valve Pipe ∅
1/2 inch ± 10 - 16 mm
3/4 inch ± 15 - 22 mm
1 inch ± 20 - 30 mm
View products

3-Way Solenoid Valve 3-Way Solenoid Valve (orifice <3mm)
3-Way Electric Ball Valve 3-Way Electric Ball Valve (bore >8mm)
Solenoid Valve or Ball Valve?
3-Way Solenoid Valve (orifice <3mm):For small flow rate, such as actuation of a cylinder, a (small) fuel system, a test setup, etc.
3-Weg Electric Ball Valve (bore >8mm):For larger flow rates, such as central heating, irrigation, compressed air etc.
 Valve circuit functions
Choose the right circuit function. The upper diagram shows the flow when the coil is not powered. The lower diagram shows the flow when the coil is powered.

The type of medium determines the choice of material for the seals. By selecting 'Other', you can choose the seal material yourself.
Tip: Use the chemical resistance table .
View products

On/Off 3-points
Difference between On/OF and 3-point controls

Valve Pipe ∅
1/2 inch ± 10 - 16 mm
3/4 inch ± 15 - 22 mm
1 inch ± 20 - 30 mm
View Products

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Tameson.co.uk is your specialist for fluid control products in the United Kingdom. Whether you need solenoid valves, electric ball valves, butterfly valves, check valves or any other valve type, our specialists are looking forward to your questions. For all your other fluid control components, such as measurement & control or pneumatics, Tameson.co.uk is your online store. The delivery times on tameson.co.uk are 2 business days for most postal codes in the UK, but in Wales and Scotland longer lead times may apply.

If you are located outside of the United Kingdom, you can visit our other websites. One of our products that we specialize in are solenoid valves. Before you select such as valve, please gather enough information about your system’s parameters. Use the detailed filters in the webshop to find the valve that is best suited for your particular situation. Alternatively, use our wizard. By using the wizard you will be guided to be best valves for your application.

Please keep in mind that solenoid valves are very sensitive to dirt and only work with clean liquids or air. Indirectly operated valves need a pressure differential of around 0.2-0.5 bar to work. Therefore, only use these types in systems with sufficient pressure differential, such as mains water supply. Direct and semi-direct operated valves operate with a pressure differential from 0 bar. The material selection is also important. The valve materials such as body and seals, must be compatible with your medium and temperature. Solenoid valves open and close fast (between around 10 and 1000 ms). Improper use can cause pressure transients in the system (water hammer). More information to make a proper selection can be found on the technical info center of https://tameson.co.uk.

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