Skip to main content
Moen Solutions

1213 M-Core Cartridge 3 Series: 3 Port Valve

  1. Last updated
  2. Save as PDF
This article will give step-by-step instructions on how to replace a 1213 cartridge in a single handle M-Core valve shower.

Preparation:

  • The water supply shut off valves must be turned off-see article How To Turn Off The Water Supply To The Faucet.
  • Recommended Tools: Adjustable Wrench or Pliers, Needle-Nose Pliers, 3/32" Hex Wrench
  • We recommend covering the drain before beginning so not to lose any parts down the drain.

 

Handle Removal:

Handle removal.png

Using a 3/32" Hex Wrench, loosen the Handle Screw until you can remove the Handle.

 

clipboard_e3dfeffa2e2e77e14d369a48755c95139.png

Slide the Sleeve off of the assembly.
Parts Legend

 In 2024 the 1213 cartridge was changed, the white Installation Sleeve is no longer required. Parts 3 and 4 that were originally black re now off-white.   

Snag_90d015 (1).png

5  Valve Body

Snag_4250110.png

4  Adapter/Check Valves 

Snag_4253688.png

3  Pressure Balancing Puck

Snag_4256875.png

2 Cartridge

Snag_4259e98.png

1  Cartridge Nut
Cartridge Removal and Valve Body Preparation

removing nut and 1213 .gif

Unthread and remove the Cartridge Nut (2). Pull the blue Cartridge (3) out.

Removing_puck_and_adapter_.gif

Using Needle-Nose pliers, remove the Pressure Balancing Puck (4), O-ring and Adapter (5).

Snag_b117c1.png

Grease the Outer O-Ring and inside of Valve Body (6).

Note: If you notice residue inside the Valve Body (6) see article, Valve Body Cleaning and Flushing.
3 Port: Shower Only Valve - For 4 Port Tub Shower Valve, Click Here

Snag_11fa871.png

Align the tab on the Adapter(4) with the hole in the Valve Body (5).

Note: The Installation Sleeve illustrated above is no longer supplied

3 Port alignment.png3 port step 2 a.gif

align cartridge to valve.png

Align the two posts on Cartridge (2) to matching feature on Pressure Balancing Puck (3) and push Cartridge (2) into Valve Body (5) until it stops. Tighten Cartridge Nut (1) onto Valve Body (5) by turning clockwise until hand tight, and then an additional 1/4 turn with a wrench.

1213 installation.gif
To View Complete Installation Video:

Click, M-CORE 1213 Cartridge Replacement.

 

For additional information on M-Core Shower products, visit Single Handle Shower: M-Core at Solutions.moen.com.

Still Not Finding What You're Looking For?

Contact Us or Call 1-800-BUT-MOEN

Non US? Moen Canada | Other International Sites

  1. Back to top
  • Was this article helpful?

Recommended articles

  1. Article type
    Topic
  2. Tags
    1. Shower Faucet-Cartridge Replacement