feeder valve for multiple boilers

Tom G

I have three HW boilers heating three apartments. Can I feed them from a single feed valve? What if I install a one-way valve at each boiler, to isolate each of them?
Thanks

Al Letellier

common feeder

Unless the boilers are tied together in some way, you need a separate feeder for each boiler. A single feeder would add pressure to all the boilers if one lost pressure for any reason, and you would over-pressurize the others, blowing the safeties.
If the boilers are on a common header and are stage fired, one is enough.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Contractor"