I have a shower that has very low flow from the hot and cold water and also from the shower when you turn the valve to switch it to the shower. All of the other fixtures in the house have strong flow including the sink in the same bathroom. Unfortunately there isn't an easy way to get access behind the shower (tile on both sides of the wall). Does this sound like something that could be caused by bad cartridges? What about some kind of corrosion built up in the pipes? How can I go about diagnosing this without ripping open the walls?
Plumbing – How to diagnose weak water flow from tub faucet and shower
faucetplumbingshower
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Best Answer
If you have a shutoff valve feeding that bath or that shower, I would check: