Hello, We are investigating a building that claims to have reduced flow fixtures installed but this does not seem to be the case. Upon our inspection, we have observed the water flow rate to be much higher than specified by the building engineer and cut-sheets provided. The way we tested this is by filling up a container of known volume and clocked the time elapsed. Is this a valid method of testing the flow rate? Thanks!

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Dylan Connelly

Mechanical Engineer

Integral Group

LEEDuser Expert

342 thumbs up

Sat, 01/25/2014 - 02:10

Robert Are you questioning the flow rate of a certain fixture? Which one? A sink, a bathroom faucet? Sometimes the pressure in a building is higher than the "rated" pressure which is the basis for labeling a fixture or aerator. Try to read the gpm off the aerator and see if that matches what was specified and submitted on.

Michael Smithing

Director - Green Building Advisory

Colliers International Ltd.

LEEDuser Basic Member

201 thumbs up

Tue, 08/25/2015 - 10:29

We have a situation where the "design" tap installed in the WC has a flow rate in excess of 3 liter/min. Is it acceptable to reduce the pressure to the tap to achieve a 2 liter/minute performance specification?

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