I have a shower faucet that only supplies luke warm water. I replaced the cartridge with no improvement. The lavatory faucet which is 3 feet from the shower produces very hot water. I thought I had heard of a anti-scalding feature on some valves. Is that what I am dealing with? We just bought the house and have no idea how old the faucet is and could not see a model number. When I purchased the replacement cartridge it was the only one for a Price Fister if that tells you anything.
Any help is appreciated.

Hi Steve

Remove the handle and see if there are any geared mechanisms... if so, you found the temperature limiting device. If there is nothing under the handle, remove the trim plate from around the valve... could be that the temp. limiting device is under the trim.

Check it out ;)

Mark