Please help. I have recently replaced all the galvanized in my house with pex. All other water sources in the house have great water pressure. However the shower is still just a trickle. When i take the stems out and let the water run the water hits the far wall in the shower so i know that the actual water pressure is not the issue. I have replaced the stems and that seemed to make the water flow even slower. Does anyone have a suggestion to try before I call a plumber.

the pipe from the shower valve to the elbow that the shower head is screwed into is still galvanized ??

No it is copper



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somewhere between the point the hot and cold enter the shower valve and the point where they meet (like a tee but integral to the valve) there is still debris.
may be as simple as pulling the stems and sticking a wire sideways towards the center trying to find a hole to clear. do both sides..

I will try that, I was hoping not to cut into the wall, but figured I would end up doing that anyway either to replace the existing plumbing or to see if it was clogged. Thank you for the help.

I tried that couldnt get the wire in far enough I guess. I think i might just need to take the valve out and clear it that way

I assume you tried it with the shower head off.

Remove the shower hear and, using a female swivel hose x 1/2" female adapter, hook a garden hose to the shower arm. Turn off the hot water at the water heater, remove the hot stem then turn on the hose. This will back flush the and should blow out any debris.

Great thank you for the tip..... should i do it on hot and cold? I built manifold system when putting pex in so i can isolate just the shower

Also yes I have tried without the shower head. I am gueesing if yhe build up it too much i could try hooking it to a pessure washer to get more force or woukd that be to much pressure

If you can shut off the shower completely, then pulling both hot and cold stems and back flushing through the shower arm is the way to go. If you are worried about getting water in the wall, pull the stem out of the stem body and screw in the body, that will poke you out a little farther.

I am going to guess that the valve body was for a tub/shower unit, and they just plugged the tub outlet. If so, there is probably debris accumulated at the "restrictor" port, and if so, it is almost impossible to get it unplugged without disassembling the valve body.

Back washing worked marvelously, about a Tbsp of debris if not more came out. Thank you all for your help



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