Moen 1222 Posi-Temp Replacement Cartridge for Single-Handle Tub & Shower Faucets – Fixes Leaks & Temperature Issues – Durable Brass & Plastic Construction

About this item (Key Features)

• PERFECT FIT FOR POSI-TEMP: Designed exclusively for Moen Posi-Temp single-handle tub and shower faucets; serves as a direct replacement for part numbers 1222 and 1222B to restore factory performance.

• ELIMINATE LEAKS & DRIPS: Effectively fixes common shower issues including constant dripping, stiff or difficult-to-turn handles, and inconsistent water flow, saving you water and money.

• PRESSURE-BALANCING COMFORT: Maintains water temperature within ±3°F to prevent "shower shock" (sudden hot or cold bursts) when other appliances like toilets or dishwashers are used nearby.

• DURABLE BRASS CONSTRUCTION: Built with a heavy-duty brass stem and high-quality plastic body to withstand high water pressure, resist corrosion, and ensure long-lasting durability.

• EASY DIY INSTALLATION: Simple "drop-in" design allows for a quick repair without replacing the entire faucet; features a standard 180-degree handle rotation for easy temperature adjustment.

Product Description

Restore Your Shower to Perfection with the Moen 1222 Posi-Temp Cartridge

Stop the annoying drip and regain control of your water temperature. The Moen 1222 Replacement Cartridge is the industry standard solution for repairing single-handle Moen Posi-Temp tub and shower faucets. Designed for durability and precise performance, this cartridge ensures your showering experience is comfortable and leak-free.

Whether you are dealing with a stiff handle, water that won't get hot, or a constant drip, the 1222 cartridge is the direct replacement part you need to get the job done.

Key Features & Benefits:

• Posi-Temp Technology: Maintained by a pressure-balancing design, this cartridge protects you from "shower shock" by maintaining consistent water temperature (within ± 3°F) even when toilets are flushed or dishwashers are running.

• Universal Compatibility: Designed specifically to fit all Moen Posi-Temp single-handle tub and shower faucets.

• Durable Construction: Built with high-quality brass and heavy-duty plastic to withstand high water pressure and resist corrosion for long-lasting performance.

• Fixes Common Issues: Effectively resolves leaking faucets, stiff handle rotation, and inconsistent hot/cold water mixture.

• Easy "drop-in" Installation: Engineered for a straightforward DIY replacement. No need to replace the entire valve assembly.

Technical Specifications:

• Part Number: 1222 (Replaces 1222B)

• Material: Brass and Plastic

• Valve Type: Posi-Temp (Pressure Balancing)

• Application: Single-Handle Tub and Shower

• Rotation: 180-degree handle rotation

How to know if you need this part:

If your shower handle rotates to turn on the water (rather than pulling out) and you are experiencing leaks or temperature fluctuations, the Moen 1222 is likely the correct part for your system.

DIY Guide: How to Install Your Moen 1222 Cartridge

Difficulty: Beginner/Intermediate | Time Required: 20–40 Minutes

Tools Recommended:

• Allen wrench (Hex key) – usually 7/64"

• Phillips screwdriver

• Needle-nose pliers

• Plumber’s silicone grease (highly recommended)

• Cartridge Puller Tool (optional, but helpful for stuck cartridges)

Step-by-Step Checklist:

1. Shut Off the Water: Locate your main water shut-off valve for the house or the isolation valves near the shower and turn the water supply off. Open the shower handle to drain excess pressure.

2. Remove the Handle: Use the Allen wrench to remove the set screw located on the underside of the handle. Slide the handle off. Remove the Phillips screw holding the plastic handle adapter and slide off the metal "stop tube."

3. Remove the Retaining Clip: Look for the horseshoe-shaped metal clip at the top of the valve body. Use needle-nose pliers to pull this clip straight up. Do not discard or lose this clip; you must reinstall it to hold the new cartridge in place.

4. Remove the Old Cartridge: Grip the stem of the old cartridge with pliers (or use the white plastic tool often included with new cartridges) to rotate it back and forth to loosen mineral deposits. Pull straight out. Note: If it is stuck fast, you may need a Cartridge Puller Tool.

5. Prep the New Cartridge: Apply a thin coat of plumber’s grease to the rubber oval seals on the sides of the new Moen 1222. This ensures a watertight seal and smoother operation.

6. Insert and Align: Slide the new cartridge into the valve. Crucial Step: Look for the "H" and "C" markings (or the notch on the brass stem). Ensure the "H" (Hot) is on the left side. If the cartridge is installed upside down, your hot and cold controls will be reversed.

7. Reinstall the Retaining Clip: Slide the horseshoe clip back into the slot on the valve body. It should slide in easily. If you have to force it, the cartridge is likely not pushed in all the way.

8. Test for Leaks: Before putting the handle back on, turn the water supply back on slowly. Check the valve for leaks. Rotate the brass stem with the plastic adapter to ensure water flows correctly.

9. Reassemble Trim: Slide the stop tube back on, reattach the handle adapter, and screw the handle back into place. Enjoy your leak-free shower!

Frequently Asked Questions (FAQ)

Q: What is the difference between the Moen 1222 and the Moen 1222B?

A: There is no functional difference between the two. The 1222 refers to the part model itself. The "B" in 1222B simply stands for "Bulk," indicating the packaging style used for contractors. Both fit the exact same Moen Posi-Temp valves and offer the same performance.

Q: How do I know if I need a Moen 1222 or a Moen 1225 cartridge?

A: This is the most common confusion for buyers.

• Choose the 1222 (Posi-Temp): If your shower handle only rotates to turn the water on (it does not pull out). The handle usually rotates in a wide arc.

• Choose the 1225 (Moentrol/Standard): If you have to pull the handle out to turn the water on and then turn it left/right for temperature.

Q: I installed the cartridge, but now my hot and cold water are reversed. Is the part defective?

A: No, the part is likely fine! This is a common installation error known as "reversed polarity." To fix this, remove the handle, pull the cartridge stem out slightly, rotate it 180 degrees, and reinstall it. Ensure the "H/C" markings (or the notch on the stem) are facing the correct direction for your plumbing setup.

Q: Do I need to lubricate the Moen 1222 cartridge before installing?

A: Yes. While many new cartridges come pre-greased, it is best practice to apply a thin layer of plumber’s silicone grease to the rubber oval seals on the side of the cartridge. This ensures the cartridge slides into the valve body easily without tearing the O-rings and makes the handle turn smoothly.

Q: My old cartridge is stuck and won't come out. What should I do?

A: Over time, mineral deposits can "freeze" the old cartridge inside the valve. Do not force it with pliers, as you may damage the pipes behind the wall. We highly recommend using a Cartridge Puller Tool (specifically designed for Moen cartridges) to safely twist and leverage the old unit out.

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