Plumbing Topic: Domestic Water Recirculation Systems Part 6
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High Rise Considerations
The last article, part 5, showed an example of a high rise system with pressure reducing valves (PRVS) and the importance of the correct setting of the balance valves. The example we used showed balance valves with as much as 18 PSIG across them at a low flow. When a design starts to incorporate balancing devices at low flows and heads higher than 20 PSIG, the opening may be so small that the valve is subject noise or to clogging due to dirt. For this reason we may suggest using zoned domestic hot water recirculation pumps.
Disclaimer: R. L. Deppmann and it’s affiliates can not be held liable for issues caused by use of the information on this page. While the information comes from many years of experience and can be a valuable tool, it may not take into account special circumstances in your system and we therefore can not take responsibility for actions that result from this information. Please feel free to contact us if you do have any questions.