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ManualsBrandsMoen ManualsPlumbing Product1/2-in Brass Compression In-Line Rough-In Valve

General

Troubleshooting: Fixture leaks from the end of the spout

Typical Cause

Leaks are often caused by a scratched o-ring or grommet on the cartridge. On models that use

a handle mechanism, a broken part could also be the cause.

Solution

Replace the cartridge (on one-handle models) or cartridges (on two-handle models). It is

essential that the model of the unit be identified to ensure you are replacing the proper

cartridge. Please view our Find Your Product section to determine your model and the

cartridge(s) required. After determining the model, you can view step-by-step instructions in

our Animated Installation Help section.

If the faucet uses a handle mechanism, inspect the parts. If one of these items is broken, the

handle mechanism will need to be replaced. Please view our Find Your Product section to

determine which handle mechanism your model uses.

Note: Improper installation of the handle mechanism can also cause this to occur

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Troubleshooting: Low water flow from spout — BOTH hot and cold water on sink faucets

Typical Cause

Depending on the model, this could be caused by debris in the cartridge, debris in the aerator,

a stuck diverter or a malfunctioning wand.

Summary of content (7 pages)

PAGE 1
General Troubleshooting: Fixture leaks from the end of the spout Typical Cause Leaks are often caused by a scratched o-ring or grommet on the cartridge. On models that use a handle mechanism, a broken part could also be the cause. Solution Replace the cartridge (on one-handle models) or cartridges (on two-handle models). It is essential that the model of the unit be identified to ensure you are replacing the proper cartridge.
PAGE 2
Solution First, it is essential to identify the model of your faucet. Please view our Find Your Product section to determine your model. Also, it is recommended that the supply lines from the shut-off valves be checked to ensure the faucet is receiving full pressure from both hot and cold supply lines. For pullout or pulldown kitchen sink faucets: Remove the hose from the wand and inspect the screen that is in between these items. If there is debris in the screen, rinse it off with water.
PAGE 3
For bathroom sink faucets: Remove the aerator and rinse off any debris. If this does not resolve the issue, then the cartridge (for one-handle faucets) or cartridges (for two-handle faucets) would need to be replaced and the valve body would need to be flushed and cleaned. Typical Cause This is caused by the shut off valves not being turned on, a lack of pressure through one of the shut off valves or an obstruction in one of the supply lines feeding water to the faucet.
PAGE 4
For non-pullout or non-pulldown faucets: Remove the spout and lubricate the spout o-rings with silicone-based grease (Moen part number 99915). Do not use plumber's grade faucet grease, silicon sprays or any lubricant that may contain petroleum. Petroleum-based lubricants may react with the rubber seals and cause the spout to become even more difficult to operate. It is also recommended that you clean the inside of the spout and the outside of the valve body when replacing the o-rings.
PAGE 5
If there is corrosion on the valve body of the interior of the spout receptor, the faucet will need to be replaced. Note: If the mounting nut underneath the sink is overly tightened to the mounting bracket, this could cause the spout receptor to be difficult to rotate. Typical Cause This is usually caused by (but not limited to) sediment or debris in the cartridge, mineral buildup or a damaged seal within the cartridge.
PAGE 6
If the cartridge was replaced, check the old cartridge stem for a gray metal washer. This washer must be transferred to the stem of the new cartridge. Typical Cause This is caused by either a broken pivot rod or an issue with the adjustment the pivot rod or lift rod. Solution Inspect the pivot rod. This will be a silver rod that should be installed into the rear of the drain. Depending on the model, there will be a metal or gray plastic pivot rod nut securing the rod in place.
PAGE 7
Note: The installation instructions for your faucet will illustrate on how to do this. If you no longer have the installation instructions, please view our Find Your Product section to determine your model. This will allow you to view or download the installation instructions.