S
Stod
How does an automatic air vent, for a radiator work? Are there any disadvantages over the normal screwed plug type?
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Anything automatic will fail sooner or later. If you are getting gas in your system, you have a problem which needs sorting. Air vents work the other way as well, and air can get in as well as out. Fix problem and use manual vents.
S
Stod
Thanks for your response, oilman.
I don't have a problem; I shall be draining my CH system down this summer, replacing the zone valves etc. My air vents are the old type and I no longer have a key for the smaller square head. So I thought I might replace the air vents too. That's why I wondered if automatic vents might be the better choice.
I don't have a problem; I shall be draining my CH system down this summer, replacing the zone valves etc. My air vents are the old type and I no longer have a key for the smaller square head. So I thought I might replace the air vents too. That's why I wondered if automatic vents might be the better choice.
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Air collecting in rads continually is a sign of a problem thet needs sorting. With manual vents you are made aware that air is collecting with automatic ones you are not.
On a sealed system the pressure can also drop slowly as these valves let out air.
Alan
On a sealed system the pressure can also drop slowly as these valves let out air.
Alan
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