Fire Engineering Training Community

Where firefighters come to talk training

Having a difficult time determining the best practice for flushing/back flushing these installations. Believe that pressurizing them with an inch-and-a-half or larger is causing uncemented plastic fittings to come apart or to leak. Saw the comments about letting the "dust settle" and gravity feeding some portion of the tank water down the h*** before priming. We have milfoil trouble, is anyone doing anything about invasive specie? Thanks for any suggestions

Views: 103


You need to be a member of Fire Engineering Training Community to add comments!

Join Fire Engineering Training Community

Comment by Brad Hoff on October 15, 2010 at 6:26pm
I know this isn't exactly what you are looking for especially with invasive species, although we do have muskrats that may decide to take residence if there is no screen protection on the end. Here in the Interior of Alaska, our dry hydrants are all in ponds or gravel pits and are all metal welded pipe. We pressurize them with air and use a scba bottle hooked up to the 1 1/2 port in the rear and flush til we see bubbles and keep an eye on the pressure gauge, then shut the gate valve once the pressure holds. This also helps keep them from freezing in the winter. I'm not sure if that may be a solution to backflushing without doing the damage?

Good Luck

Policy Page


The login above DOES NOT provide access to Fire Engineering magazine archives. Please go here for our archives.


Our contributors' posts are not vetted by the Fire Engineering technical board, and reflect the views and opinions of the individual authors. Anyone is welcome to participate.

For vetted content, please go to

Fire Engineering Editor in Chief Bobby Halton
We are excited to have you participate in our discussions and interactive forums. Before you begin posting, please take a moment to read our policy page. -- Bobby Halton

Be Alert for Spam
We actively monitor the community for spam, however some does slip through. Please use common sense and caution when clicking links. If you suspect you've been hit by spam, e-mail

FE Podcasts

Check out the most recent episode and schedule of

© 2022   Created by fireeng.   Powered by

Badges  |  Report an Issue  |  Terms of Service