Help with Moen Chateau Valve

[Kirk Pitts]

Hi, new guy here. Been a dyi'er for years. Got a question and can't find the answer.

I have an older moen valve that is only flowing hot water. I just replaced a water softener that had an unknown leak and there was green gook in the pipes. Cut out some and poured some bleach to clean out and of course stuff was flowing into the house. Had to clean the faucet aerators.
I guessing something bigger blocked the cold water. I remove the valve and still only hot water flows so I know it isn't the valve.
Does anyone know how I can possible get this to flow again?
Picture of the valve.

 

[Terry]

There isn't much there to work on. It's either in the cartridge, 1200 or 1225 which is what you have in there,
The stop on the cold side which may be blocking the water flow, or perhaps even before it gets to the valve. Have you turned off the stops at the valve, pulled the cartridge and then opened up the stop to see what you get for flow?

 

[Sponsor]

 

[Kirk Pitts]

Thanks, the graphic helped. I thought I would need to check the stop-check valve but I wasn't sure what would be there when I removed it. Didn't want to do something that I could put back. Pulled it out and removed what was clogging it. Put back together and functioning perfectly. Thanks again.