Magnet Valves: What Are They and How Do They Work?

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SUMMARY

Magnet valves, often referred to as solenoid valves with a permanent magnet, serve as critical components in cooling systems and gas cookers for safety applications. They function by utilizing a magnetic field to actuate the valve, allowing it to return to an off position during power loss. The discussion clarifies that the operation relies on moving an iron core within the magnetic field, rather than physically moving the magnet itself. This design ensures reliability in emergency situations, distinguishing magnet valves from traditional lever-operated valves.

PREREQUISITES
  • Understanding of solenoid valve mechanics
  • Familiarity with magnetic fields and their applications
  • Knowledge of emergency safety systems in gas appliances
  • Basic principles of electromagnetism
NEXT STEPS
  • Research the design and operation of solenoid valves
  • Explore the role of permanent magnets in safety devices
  • Learn about the integration of magnet valves in gas cooker systems
  • Investigate emergency actuation mechanisms in cooling systems
USEFUL FOR

Engineers, HVAC technicians, and safety system designers who are involved in the development and implementation of cooling systems and gas appliances will benefit from this discussion.

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I'm doing some drawings on a cooling system, which includes a couple of so called "magnet valves". What excactly is a magnet valve, and does it actually have anything to do with the normal type of magnets?
 
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I believe it to be as per a normal solenoid valve, but with a permanent magnet so that when power cannot be supplied (in an emergency, for instance) the valve can still actuate to an off position. They're used in gas cookers as safety devices, I believe.
 
So do you physically move the magnet into position, or is the valve held against it by a stronger electromagnet, or what? If the latter, a spring would make more sense. If the former, why not just a lever? :confused:
 
I have never personally heard of the term. However, it makes sense that it is simply a solenoid valve since the entire operation is based on moving an iron core in a magnetic field.
 

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