toilet water supply

[RkwdNewbie]

During setup last week on our first trip since March, the toilet flush valve worked before water from the pedestal was connected (using residual water and pressure from the last trip).
After hooking up water supply from the pedestal, the flush valve only flowed the slightest trickle of water to the toilet.
Is there a check valve in the supply line to the toilet that could have stuck closed during that activity?
The only other thing that makes any sense is the valve failed and will have to be replaced.
Any opinions appreciated.

Boyd

[Kcoulter]

There is a screen filter at the flush valve that could be filled with crud

[5picker]

There is no check valve in the toilet line but there is a screen in the toilet valve if you have a Dometic toilet.

I don't see where you mentioned the toilet make/model anywhere in your post. When asking questions about an appliance or accessories, it is always best to include as much information as possible.

Forest river uses different makes/models of toilets, refrigerators, ovens, vent fans, etc., across all their different brands of R/Vs. Not all FR units are the same, even within the same division.

[RkwdNewbie]

Originally Posted by 5picker

There is no check valve in the toilet line but there is a screen in the toilet valve if you have a Dometic toilet.

I don't see where you mentioned the toilet make/model anywhere in your post. When asking questions about an appliance or accessories, it is always best to include as much information as possible.

Forest river uses different makes/models of toilets, refrigerators, ovens, vent fans, etc., across all their different brands of R/Vs. Not all FR units are the same, even within the same division.

I do have a Dometic toilet - will check model tomorrow morning when it is not "hotter than Hades" in there.

Thanks
Boyd

[RkwdNewbie]

Originally Posted by RkwdNewbie

I do have a Dometic toilet - will check model tomorrow morning when it is not "hotter than Hades" in there.

Thanks
Boyd

I kinda discounted crud since I figured that the primary source of crud would be the anode rod in the water heater, but I guess that the pressurization system could back water from the water heater into the toilet supply line when I flushed the toilet before turning on the shore water supply, depending on the plumbing arrangement.
That might solve the mystery.

Thanks again all

[5picker]

Originally Posted by RkwdNewbie

I kinda discounted crud since I figured that the primary source of crud would be the anode rod in the water heater, but I guess that the pressurization system could back water from the water heater into the toilet supply line when I flushed the toilet before turning on the shore water supply, depending on the plumbing arrangement.

That might solve the mystery.



Thanks again all

If you regularly use the low point drains to drain your system between uses, it is imperative to put the water heater in bypass BEFORE opening the low point drains.

You are absolutely correct the crud comes from the water heater. The cold water inlet/dip tube will suck crud from the bottom of the tank when the low point drains are opened. Not all the crud makes its way out the drains. Some of it remains in the plumbing and when the system is repressurized, it makes its way to the toilet valve and the aerators on the sinks.

Below is a photo of a Suburban water heater dip tube (taken through the anode bung) showing just how close to the bottom tank it really is.