3 ms·
Huh, never heard of a manual one of those. I have some little widget that automatically refills the boiler when there's a pressure difference in the wrong direc
by mackman 5y ago
Huh, never heard of a manual one of those. I have some little widget that automatically refills the boiler when there's a pressure difference in the wrong direction I guess.
- shimon 5y agoYes, the modern solution to this consists of a pressure-reducing valve (refills when pressure in the boiler system drops) and a backflow preventer (for the safety issue).