Noise after toilet flush

Over 698,000 strictly plumbing related posts

Plumbing education, information, advice, help and suggestions are provided by some of the most experienced plumbers who wish to "give back" to society. Since 1996 we have been 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 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 tract you. We absolutely do not sell your personal information. We are made possible by:

Post New

How to Show Images

Newest Subjects

Noise after toilet flush

Author: friendlyNYC (NY)

We have a tankless toilet in our apartment with a Delany Rex flush valve, apparently with non-adjustable cover.

Right after the toilet flushes and the water stops, a brief but loud vibration-like noise can be heard. I find that if I keep holding the lever and let the water flow for some time, then the noise will stop for several subsequent flushes, but eventually the noise returns as strong as before. It's difficult to determine where the noise is coming from exactly. We've been in this apartment for the last 18 months, but this noise only just started about a month ago.

One suggestion I have heard is to adjust the water pressure through the valve, but unlike the sloan valve in our previous apartment, i don't see an adjusting screw on the Rex.

Thanks in advance for any suggestions for diagnosis/maintenance.

Edited 1 times.

Post Reply

Re: Noise after toilet flush
Author: 121plumbing (AK) For this problem you can consult plumber.Afetr analysing problem he can provide better solution.
Post Reply

Re: Noise after toilet flush
Author: KCRoto (MO) If this is an apartment, contact the management/owner.
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