Cleaning the Check Stops 130158 and 147209

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Example of a system:

This article will walk you through the process of removing and cleaning the check stops for a thermostatic vertical spa valve 3371 or S3371..

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: Pliers and/or 5/8" Deep Well Socket
The following instructions assume the handle and associated handle pieces have been removed. For additional details, visit Shower Handle: 3/4" Exact Temp-Thermostatic Lever

There are two versions of this valve that look almost identical. Compare the stop bodies (#2) to determine which version you are working with for the correct instructions.

Version 1:

Stop Body (#2)

version 1 identifier.png

3371 gen 1 breakdown.png

Version 2:

Stop Body (#2)

version 2 identifier.png

3371 stop screen breakdown.png

Disassembly:

1. Remove the escutcheon plate (#1).

2. Confirm main water is turned off.

3. Unthread the stop body (#2). Do not touch the center screw (this effects the water flow).

Version 1: Use pliers to unthread by the outer edge of the stop body (#2).

Version 2: Use pliers or 5/8" deep well socket to unthread by the hex portion of the stop body (#2)

4. Use pliers to pull the check stop (#3). Clean the check stop (#3).

Assembly:

Slide the check stop (#3) into the valve body (#4).
Use pliers to thread the stop body (#2) in very tight. Do not touch the center screw (this effects the water flow).
Slide the escutcheon plate (#1) back on.

For additional information on 3/4" Exact Temp, visit Vertical Spa: 3/4" Exact Temp at Solutions.moen.com.

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