View Full Version : Installed new pressure balanced moen 1225 cartridge won't regulate temp as water is
1stewart
Sep 3, 2015, 12:33 PM
Installed a new moen 1225 cartridge as the old one had seized and was not pressure balancing. New cartridge installed smoothly but when toilet flushes anywhere in house shower occupant gets scalded still won't pressure balance?
speedball1
Sep 5, 2015, 09:05 AM
Question, what type and size are the water pipes? What is the house P.S.I. This sounds like more of a piping problem rather than a cartridge problem. Back to you , Tom
hkstroud
Sep 5, 2015, 09:24 AM
Problem is with pressure balancing valve, not the cartridge.
See this parts break down.
https://www.moen.com/shared/docs/exploded-parts-views/3170pt.pdf
Call 1-800-BUY-Moen with model number and request an new pressure balancing spool.
Warranted for life.
You could try soaking old one in vinegar to remove mineral deposits.