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Can a bad or clogged valve body prevent water from coming out of the shower, even with the cartridge removed?

Asked by پارسا علیزاده
8 months ago
Last Updated: May 12, 2024

Hey plumbers, I need some help with my shower situation. I recently redid my bathroom and put in a new tile shower. Everything was fine for a couple of weeks until the main water line under my house decided to act up. I dug down 36 inches and replaced a corroded galvanized 90 that connected to the main line from the meter. After flushing it out and hooking it back up, the water company had to come fix a main line break before the meter. It seems like a lot of dirt got in the lines during that process, because I had to clean out every valve cartridge in my house. Now, everything works except the shower. I have plenty of pressure when the cartridge is out, but nothing when it’s in. I’ve checked the cartridge and it seems fine. Even when I connect the shower directly to the main line, I still get no water. Could there be a blockage in the valve body that’s causing this issue? Any advice would be much appreciated!

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Sedef Çetiner

Who manufactured the faucet?

Sedef Çetiner

If you remove the cartridge, water will still flow out.

Sedef Çetiner

Did you remove the cartridge and now have no water?

Sedef Çetiner

Those Moen cartridges have a tiny copper line inside them. It’s possible there’s a buildup clogging it. I’d suggest trying a new one before going ahead and replacing the entire valve assembly.

Sedef Çetiner

Hey, I just checked out my truck and it looks like it’s the newer Posi Temp. Sometimes junk can get in there, you might want to think about replacing it. Not a whole lot else to do. Good luck with it! 👍

Sedef Çetiner

No content

Sedef Çetiner

Hey buddy, has been in the plumbing trade for 40 years and his expertise is top-notch.

Sedef Çetiner

Hey there, I recently replaced all the faucets in a house and upgraded the Ballcocks in 3 new toilets I installed last month. Unfortunately, the lady’s Water Softener malfunctioned and caused a major issue with clogging. The media granules were so fine that they ended up blocking every faucet in the house.

Sedef Çetiner
Sedef Çetiner

Remember to submit your timesheet by Friday.

Sedef Çetiner

The deadline for the report is approaching.

Sedef Çetiner

Can you please provide feedback on the project?

Sienna Evans

Added that. It must be the valves.

Kaïs Caron

Did you remove the shower head? Or is there no water coming out of the tub spout?

Kaïs Caron

You know, I was thinking maybe it has its own shut off somewhere and someone turned it off during the breaks. It should work without the valve, but I’m not sure how to plug it off.

Kaïs Caron

If it’s a straight shot and you’re pretty handy, you could maybe give an air compressor a try.

Kaïs Caron

Is definitely weird. It’s more difficult not being there in person. I’ve never had trouble figuring something out face to face. That’s why I recommend air. It applies more pressure without causing water to spill everywhere.

Kaya Evliyaoğlu

The shower head might be blocked because the cartridge is installed incorrectly or facing the wrong way.

Kaya Evliyaoğlu

Is there a balancing valve on each side of the supply in the valve body? They might be clogged with debris.

Kaya Evliyaoğlu

Thinks the issue must be with the cartridge. If water is flowing from the valve body without the cartridge, then there must be an issue with the cart. He suggests getting a replacement for the 1225b Moen.

Kaya Evliyaoğlu

Hey, mentioned that it’s important because it’s a pressure balancing valve

Arnold Ross

Just so you know, it won’t function properly unless both hot and cold are turned on. There’s a balancer in there.

Purificación Campos

Try attaching a garden hose to the shower arm instead. Take out the cartridge

Ralph Russell

The cartridge is pretty inexpensive if it does the job

Sienna Evans

Have you inspected the shower head for any issues?

Angelika Caron

The cartridge seems to be clogged. You’ve ruled out all other possibilities.

Heather Crawford

Do you still have any galvanized pipes in your house? If so, it’s best to replace them. Start from the shower valve and work your way back. I had a piece of rust/mineral buildup come loose and get stuck in a 1/2” copper 90 just before the shower valve. Pex pipes are even narrower due to the insert fittings compared to copper pipes with external fittings.

Heather Crawford

I would definitely replace that quest line before it becomes brittle, if it hasn’t already. I was fortunate that the only cost was a ceiling due to a faulty angle valve.

Heather Crawford

I’m a bit concerned because the PEX in my house is not Uponor, and I don’t think the builders were supposed to bury a steel line underground. But with the brass-plated zinc PEX insert recall, the plumbing company may have gone out of business.

Gabriel Soto

Have you checked for blockages from the valve to the shower head? Did you test it with the cartridge in place but without the shower head, and it still didn’t work?

Gabriel Soto

It seems like there might be an issue with the cartridge. If water is coming out of the valve even when the cartridge is not in, what else could be the issue?

Arnold Ross

Try pulling the cartridge and closing the shower curtain, then turning on the main. If no water comes out, you may have a clogged water line.

Arnold Ross

So next up is the cartridge.

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