Moen Voss shower head - how to remove the flow restrictor

The problem is that all shower heads sold now have to be low water volume. You can take the restrictor out and see if that helps. Look for a blue or white plug type insert in the fixture that has a slot on it. Pull it out and you should be good.
http://homeguides.sfgate.com/remove-water-restrictors-showerheads-27817.html
and http://www.ehow.com/how_5189790_remove-flow-restrictor-shower-head.html

You need to tell us what shower head it is. Usually the flow restrictor is in the section that screws onto the pipe that goes into the wall. Be careful when you take it off so that you don't mar the chrome finish,

Since your question is so vague (is it a shower, tub/shower, lavatory, kit. sink or laundry tub faucet) I'd have to say that the flow restrictor in the aerators or showerhead is clogged up. Just unscrew and remove and either clean aerator or sh.head out and/or remove flow restrictor permanently. If that doesn't work turn off water and disconnect supply tubes from faucet and run them into a bucket and turn water back on to check for volume. If you have plenty of water at supplies then remove faucet and take defective faucet back to where it was bought and get another one!

The flow restrictor in the Moen Banbury shower 5 (combination hand held and wall mount shower heads) is in the 3 Way Diverter Valve inlet, which screws to the standard shower outlet pipe at the wall. Take the Diverter Valve off the wall and just pull or drill the flow restrictor out.

Your problem is in the water restrictor located inside the shower head. All plumbing manufacturers install these small plastic internal blockers to reduce water down to 2.5 gals per minute. In your case, this restrictor is most likely filled with sediment which is restricting it even further. Remove the shower head from the curved shower pipe. Look inside where the water goes through it. You should be able to see the restrictor. Maybe you can flush out the sediment. Otherwise, remove it and I'm sure you'll get more pressure then originally installed. Because most restrictors are sort of plastic screens or cones, I usually put a wood screw through the center of this product and then once a few threads bite in, I use a plyers on the head or the screw and pull outward while holding the shower head in a stable position. If you are able to get it out, technically your "out of code" because now your going to get all the water it can really supply.Most people are delighted to have it gone.
Nimsgame

Your issue could be caused by the water restrictor in the shower head. To know for sure, remove the shower head and then turn the water on.

Very tough water restrictions have manufacturers using plastic water restrictors in the shower heads.

Although you are not supose to, some shower heads can be taken apart to modify, or remove the restrictor.

I hope this helps you.

How I remove them is take a drywall screw and screw in to the flow restrictor. Then grab it with a pair of pliers and pull out.

Remove the shower head from the arm and look inside the connector on the showerhead. You should see a plastic or metal piece that will either unscrew or need to be pulled out with needle nose pliers. Once that's been removed the flow should be improved.

Usually whenever you do any repairs on plumbing, you dislodge calcium from the inner surfaces of teh plumbing. Check to see if ther is a mesh filter in the inlet side of the head. and remove and clean it. otherwise you could remove it and use a vacuum yo try and remove any deposit that may be in it. If that is unsuccessful,
you can always return it, but always remember to open the fawcett and run it before installing the head.
This is an essential part of any plumbing job. Good luck

. If your local store refuse to replace it Moen will gladly do so with no problem.

They are good like that.

Is this only happening in your shower? Or through the hole house? Maybe you shower head has a flow restrictor in it. Try removing it!