New low profile fill valve keeps running

[Ron_Jeremy]

We have a Universal Rundle Bordeau 4005 low profile toilet as seen here:

Bordeau 4005

The original fill valve is toast & standard universal fill valves found at local stores are too tall to fit.
Anyway, I installed the below 04-4104 low profile fill valve:

04-4104

It fills the tank just fine but after it finishes filling I can still hear water 'moving' if I listen closely with my ear near the tank supply line (even after 30 minutes). The only way to stop this is to turn the adjusting screw counter clockwise on the new fill valve (this 'lowers' the fill height). However, I will have to repeat the process after the next flush. The other option is to turn off the water supply valve.

I thought maybe the fill valve was defective so I bought another but it does exactly the same thing.

I'm at my wits end here and am considering replacing the entire toilet if I can't get this resolved because we live off-grid & collect rain water, so a running toilet is a huge problem for us.

Any ideas?

 

[Terry]

How about a picture of the tank insides? 800 pixels or less.
If the fill tube is pushed down the overflow, it can siphon the tank.

 

[Sponsor]

 

[Ron_Jeremy]

Thanks for offering to help

 

[Terry]

How new is the flapper? I would replace that too.

 

[Ron_Jeremy]

I considered that but the flapper doesn't seem to be the issue because if I turn the water off it's complete silence -- not a trickle. Also, if I turn the water height adjustment valve counter clockwise the running water sound stops immediately.

 

[Terry]

Sometimes the Korky fill valves can be used with a low height tank.

 

[Ron_Jeremy]

Ok I'll give one a try. Update: I believe I already gave one a try. The problem is the minimum height is 8.5" which puts it well over the top of the drain tube.

 

[Terry]

The Korky will work with a 6" water level.

 

[Ron_Jeremy]

Hi @Terry

Thank you for continuiing to help

The overflow tube is 5.25" high measured from the base of the tank, and the max water fill line is about 1" below that figure. Is 6" the lowest the Korky wil go?

 

[Terry]

6" is as low as the Korky will adjust to. Sounds like you need 5" or lower.
So not the 8" that you previously mentioned.

 

[Ron_Jeremy]

Hi @Terry when I mentioned the minimum height I was talking about the replacement fill valves available at our local stores -- everything seems to be around 8" or higher.

 

[Ron_Jeremy]

I just had an idea. Maybe I could extend the overflow pipe or replace it with a new longer pipe? That way I could use a universal fill valve and I could stuff a brick or something inside the tank to artificially raise the water level so we're not using too much water.

Thoughts?

 

[Terry]

The flapper determines how much water leaves the bowl. They have some that are adjustable. You won't need the brick.
Extending the overflow, making sure there is no leak would work.
A different flush valve? I see the one listed is very short, but maybe someone knows of one for a one-piece, 2" flush valve that would fit for that.

 

[Marlinman]

Look at Coast 49106. It's a replacement for Universal Rundle P148. The float adjustment is on the head of the valve.

49106-MARK IV FOR UNIVERSAL RUNDLE P148

www.coastproductsonline.com

 

[Ron_Jeremy]

Hi @Marlinman thx for the help. A couple days ago I ordered a new fill valve online. It looks very similar to the one you mentioned. If mine doesn't work I'll try the Coast 49106, and if that doesn't work I'm replacing the toilet.

 

[Ron_Jeremy]

Went old school with the float ball and so far seems to have fixed the problem.