Does this valve come with the O rings etc or is it just the valve?

I just replaced this cartridge last night. It is quite a simple process that is actually difficult to pull off. Some tips: 1) It came packaged with a plastic "nut" on the end of the brass shaft. it makes the shaft look very short. This is the nut that you can use to twist the old cartridge back and forth to remove it. It must come off when you insert the locking pin.2) If the cartridge has been in there any amount of time, chances are it is going to be very reluctant to come out. After struggling with removing the old one, and tearing off the plastic tabs in the process (before I identified the "nut"), then watching a bunch of how-to videos, I decided to see if heat applied to the valve body would help. I used a plumber's torch set very low, and it worked perfectly. Even a stick lighter might work. With the flame set low, and being very aware of the surrounding area, heat the valve body for a couple minutes. I does not need to be cherry red. While you heat, twist and pull the cartridge with a pair of pliers. After 1/2 an hour of zero progress, with the heat it popped out in about 2 minutes.3) Once the old one is out, stick your finger in the hole and feel for any remaining parts. Mine left behind a large piece of plastic that would have really messed up the re-install had I not stuck my finger in. I also wiped out the inside with a rag just to remove and metal shavings and dirt that might damage the new cartridge.4) This is important. The valve needs to be installed in the proper orientation for cold water to come before hot. Put it in upside down and the hot water comes first. On the face of the replacement, on the plastic tab, there should be a H|C imprint. This must be toward the top. If you don't see it, then look at the black plastic valves on the side of the cartridge. Each will have a hole in it. One will be more forward and one further toward the back. The one to the back is the HOT side and should be on the left.5) Once you have the proper orientation figured out, lube the O-rings with the included packet. Do NOT use petroleum (Vaseline) jelly unless you want to replace this again in a few years.6a) Gently push the new part into place with the H|C tab on top and re-insert the lock pin. Turn the water on and check for leaks.6b) The valve shaft will rotate without limit so don't panic if the water comes on and off while you turn the shaft. Find the orientation that shuts off all water with the handle at 6 o'clock.7) Reassembly of the plastic "gears" is also important. This took a few trial and error runs to figure out. These are the temperature limiters where you set the max temp. If you line up both tabs, then you get max hot at 9 o'clock. Move the outer ring CLOCKWISE and it will stop the rotation before you reach max (good for scald protection w/ kids). My suggestion is to put the metal backing ring/ handle on the shaft and turn it to off, straight down, to be sure the shaft is positioned correctly otherwise you might end up with off at the top 12 o'clock position - the handle will only install one way. Once you have done this, remove the metal ring/handle and install the face plate and trim tube. Both should have a notch on top that lines up with the valve. Next, install the large plastic "gear" limiter on the shaft with the teeth facing out and the tab aligned to the trim tube. Now install the smaller plastic gear so it's tab perfectly aligns with and fits into the tab and slot. This set up will give you max hot water at the 9 o'clock position. You can move it clockwise to reduce the max temp. I suggest turning the water on and testing it for temp. When you test, you have to have the plastic limiters and the metal ring on with the metal tab on the back located somewhere between the outside limiter and inside limiter within the larger gap created by them. This is easiest to do by test assembling with the handle first.Before you put the screw in and install the handle you should have:Inserted the lock pinSet the shaft to the off position that allows the handle to point down (6 o'clock)Installed the large, then small temp limitersInstall the metal in the proper orientation, then installed the shaft screwInstall the handle properly on the shaft and tighten the allen lock screw.Another tip:If you want to maintain the exact temp settings you had originally, you can probably put a wrap of tape around the plastic limiters to hold their relative position.Take pictures as you removeTest fit and try out at every step

i have a problem hot water flow is very minimun, i think is a pressure problem, can someone knowa the working psi for these?

Most are are standard for city pressure I don't know excit but over 100 psi. Usely it's the seal in the cartridge that's bad.

Can items be returned unopened

I think you need to ask Amazon.

person or firm to install 1222 moen cartridge ?

Hello and thank you for your interest in Moen products. The Moen 1222 One-Handle Posi-Temp Faucet Cartridge Replacement for Moen Tub Shower and Shower Only Configurations, Brass and Plastic does not need to be installed by a professional. Anyone can install it, there are instructions and directions with the part. If you are needing someone to install it any local plumber or handyman can assist. Our product specialists are available for pre-purchase, installation, and warranty assistance. They can be reached at 1-800-289-6636 and are available Monday through Friday from 8:00 am – 7:00 pm Eastern Time

Brand	Moen
Material	Brass
Finish Type	Chrome
Handle Material	Metal Plastic
Item Weight	9 g
Mounting Type	Deck Mount
Included Components	Valve
UPC	026508014004
Global Trade Identification Number	00026508014004
Manufacturer	Moen
Country of Origin	USA
Item model number	1222
Product Dimensions	3.18 x 5.4 x 16.51 cm; 9.07 g
ASIN	B001003P74

MOEN POSI-TEMP CARTRIDGE

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