Auto Fill Valve
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Just thought of something the other day. For those that have an auto fill valve, lets say fill pressure is set to 12psi. shouldnt the auto fill maintain a min psi through the boiler system at 12psi? The expansion tank would just act as a buffer then as the water is heated. Am I on the right track with this line of thinking ?
- coaledsweat
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That is correct. It may go a little higher as the water gets hotter but should maintain about 12# at minimum.
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- Member
- Posts: 705
- Joined: Sat. Nov. 08, 2014 11:47 am
- Location: Quakertown, PA
- Stoker Coal Boiler: Keystoker '81 KA4 (online 1/16/17)
- Coal Size/Type: WAS Lehigh Rice (TBD)
- Other Heating: EFM SPK600
With that said, if boiler pressure would fall below 12psi, it would be safe to assume that the auto fill could be potentially malfunctioning.coaledsweat wrote:That is correct. It may go a little higher as the water gets hotter but should maintain about 12# at minimum.
- coaledsweat
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- Coal Size/Type: Pea
They may waver a few pounds. If it falls below 10# it may need adjusting or replacing. Keep in mind, well water can do a number on them. I've had 3 in 20 years.