Installing Phyn, Leak detection shut off valve (CA

Over 700,000 strictly plumbing related posts

Welcome to Plbg.com (also known as PlumbingForum.com) where plumbing advice, education, information, help and suggestions are provided by some of the most experienced plumbers and plumbing contractors anywhere who all wish to "give back" to society. Since 1996 we have been free without popup or other invasive ads and known to be the best online STRICTLY PLUMBING advice site. If you have questions about plumbing, toilets, sinks, faucets, drains, sewers, water filters, venting, water heating, showers, pumps, and other strictly PLUMBING related issues then you've come to the right place. Please refrain from asking or discussing legal questions, or pricing, or where to find and/or purchase products, or any business issues, or for contractor referrals, or any other questions or issues not specifically related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups and we don't track you. We absolutely do not sell your personal information. We are made possible by:

Post New

How to Show Images

Newest Subjects

Installing Phyn, Leak detection shut off valve (CA - LA Area)

Author: beagleplumbing (CA)

Hey all!
I have had a couple of customer asking to get a Phyn water shut off on their water main. If you are unfamiliar with Phyn its essentially a submeter that shuts off water if it detects to much water flow for long periods of times (it learns whats normal per house hold).
The question I have is its a 3/4" inlet valve and Phyn states it can be installed on up to 1-1/4" water line. I am confident it is against code to downsize that much even if its only just about 16" but can not find it in the code book. Can anyone confirm its against code, and provide the code? |

Thank you!

Post Reply

Re: Installing Phyn (CA - LA Area)
Author: packy (MA) my code talks about there being sufficient volume of water so that all fixtures work as intended. it talks about fixture units and gallons per minute. if you total up your demand and come up with 1 1/4 inch required pipe size, i don't think any inspector will allow a restriction down to 3/4.. Edited 1 times.
Post Reply

Re: Installing Phyn (CA - LA Area)
Author: steve (CA) The Phyn Plus has one inch threaded connections on it. They are coming out with inch and a half and 2-in versions. Edited 1 times.
Post Reply

Please note:

Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.

Search for plumbing parts on our sponsor's site:

Plbg Advisor List Common Plumbing Terms Find A Plumber Plumbing Manufacturers Directory theplumber.com

Special thanks to our sponsor:

to FAQ's - to popular subjects - to plumbing books - to Tankless 101 - to plumbing history - to helping charities - to contact us