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Pressure Balance Tub & Shower Cartridge for Mainline A507975

White plastic cartridge with red and blue limit stop with square brass stem and black rubber seals on the bottom.
Pressure Balance Tub & Shower Cartridge for Mainline A507975 - Image 2
Pressure Balance Tub & Shower Cartridge for Mainline A507975 - Image 3
Pressure Balance Tub & Shower Cartridge for Mainline A507975 - Image 4

chat iconWHAT OUR CUSTOMERS SAY…

“Really great experience getting parts for my 30-year old frost free silcocks. They not only had the parts available, but they were shipped within a couple of hours. Great job, thank you! ”
-Phil R
02/08/2026

$74.17

 

The Mainline A507975 is a washerless pressure balance replacement cartridge designed specifically for 410V series tub and shower rough-in valves. It is a critical plumbing component used to maintain consistent water temperature and pressure while repairing leaks in shower systems.

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.

SKU: 97900-1 Category: Tag:

Pressure Balance Cartridge for Mainline

 

A507975     

 

  • A washerless pressure balance cartridge designed to prevent sudden temperature changes in the shower or tub.
  • Designed for use with 410V, 410VLS, 410VPEX, and 410-LS pressure balance tub and shower valves.
  • 5 3/8″ length

 

Customer submitted image. 

 

Common questions about this product

Is this item the original manufacturer's recommended replacement part? chevron-icon

Yes, this is the OEM recommended part.

Is this the correct item for my application? chevron-icon

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.

 

 

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM part. 

chat iconWHAT OUR CUSTOMERS SAY…

“The vacuum breaker on my outdoor spigot failed and Noel's Plumbing was the only placeI could find that had the appropriate mfr. part. I sent a text with photos on Wednesday evening to make sure the part I found was correct. In less than 2 hours later, I had a reply confirming it was the correct part. Placed my order that evening and received the part on Saturday afternoon (about 2.75 days) and my plumbing issue was resolved! I highly recommend - I really appreciated the prompt and pleasant response. ”
-Kimberly S.
04/25/2026
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