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Non Return / Solenoid Valve

Overview

Non-return/Solenoid valves work by using an electrically activated solenoid to control the flow of fluid through the valve. When the solenoid is energised, a magnetic field is created, pulling the valve plunger into the valve body, opening the flow path. When the solenoid is de-energised, a spring in the valve pushes the plunger back into its original position, closing the path again.

The use of solenoid valves can offer several benefits, including:

While solenoid valves offer many advantages when used in process cooling equipment, there are also some drawbacks to consider:

Electrical dependence

  • Solenoid valves rely on an electrical current to operate, which means that they are not suitable for use in applications where there is no electrical power available. If the electrical power is disrupted or fails, the valve may not operate as intended.

Limited flow control

  • Whilst solenoid valves are able to open and close quickly, they are not typically designed with fine flow control in mind. If precise control of fluid flow is required, additional measures may be required. 

Limited pressure range

  • Solenoid valves are designed for use at low to medium pressures, but may not be suitable under high pressures.

Maintenance requirements

  • As with any component, solenoid valves may be subject to wear and tear, and may require replacement over time. If exposed to high temperatures or corrosive fluids, the solenoid coil can become damaged.

When used in process cooling equipment, solenoid valves are often used in conjunction with other components such as temperature sensors, flow meters, and control systems to ensure efficient and accurate control.

Solenoid valves are often fitted to prevent back siphoning of fluid into the chiller when it is turned off for refilling or maintenance.

They are recommended when the chiller and application are at different levels (more than 2 metres height difference), or where a long length of flexible tubing is used between the chiller and the application. It is also advisable to add non-return/solenoid valves in situations where pipe-runs will be going up into ceiling ducts.

Distributors

Non-return/Solenoid valves work by using an electrically activated solenoid to control the flow of fluid through the valve. When the solenoid is energised, a magnetic field is created, pulling the valve plunger into the valve body, opening the flow path. When the solenoid is de-energised, a spring in the valve pushes the plunger back into its original position, closing the path again.

The use of solenoid valves can offer several benefits, including:

While solenoid valves offer many advantages when used in process cooling equipment, there are also some drawbacks to consider:

Electrical dependence

  • Solenoid valves rely on an electrical current to operate, which means that they are not suitable for use in applications where there is no electrical power available. If the electrical power is disrupted or fails, the valve may not operate as intended.

Limited flow control

  • Whilst solenoid valves are able to open and close quickly, they are not typically designed with fine flow control in mind. If precise control of fluid flow is required, additional measures may be required. 

Limited pressure range

  • Solenoid valves are designed for use at low to medium pressures, but may not be suitable under high pressures.

Maintenance requirements

  • As with any component, solenoid valves may be subject to wear and tear, and may require replacement over time. If exposed to high temperatures or corrosive fluids, the solenoid coil can become damaged.

When used in process cooling equipment, solenoid valves are often used in conjunction with other components such as temperature sensors, flow meters, and control systems to ensure efficient and accurate control.

Solenoid valves are often fitted to prevent back siphoning of fluid into the chiller when it is turned off for refilling or maintenance.

They are recommended when the chiller and application are at different levels (more than 2 metres height difference), or where a long length of flexible tubing is used between the chiller and the application. It is also advisable to add non-return/solenoid valves in situations where pipe-runs will be going up into ceiling ducts.

Applied Thermal Control Ltd.
39 Hayhill Industrial Estate, Barrow upon Soar, Leicestershire, LE12 8LD.
Telephone: +44 (0) 1530 83 99 98
E-Mail: sales@app-therm.com
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