Prier M-231-3102 Small Valves Stem Assembly with Internal Vacuum Breaker

“Mansfield by Prier M-123-0093 500 Series 8″ Stem Assembly” has been added to your cart. View cart

Bright brass stem unit with black rubber o-ring.

Prier M-231-3102 Small Valves Stem Assembly with Internal Vacuum Breaker - Image 2

WHAT OUR CUSTOMERS SAY…

“I texted him a picture of the shower part from the 50’s I needed and he was able to identify it immediately. I ordered it and it showed up in two days! Very knowledgeable and friendly! ”

-Jim F.

02/04/2026

$17.47

Prier M-231-3102 Small Valves Stem Assembly

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

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Restore your faucet to peak performance with the Prier M-231-3102. This genuine replacement kit is engineered specifically for the Mansfield-style, providing all the essential internal components needed to fix leaks, drips, or worn-out seals.

M-231-3102

Features a built-in anti-siphon backflow preventer, eliminating the need for an external vacuum breaker.

Common questions about this product

Yes, this is the OEM recommended part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

WHAT OUR CUSTOMERS SAY…

“Thank you the faucet works perfectly. When i spoke to American Valve they told me "no one makes a replacement stem". Good customer service.!!! Thanks again ”

-Joe B.

08/01/2024