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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…

“Fast, friendly service with just what you need. ”
-Stephen S.
06/08/2026

$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…

“I sent in photos of a broken cartridge (still installed, couldn’t take it out myself due to water shut-off restrictions in a condo) and even with the limited view they were able to tell me the exact part I needed so I could have it ready for the plumber (meaning I didn’t need to pay for a plumber to come out twice!!) ”
-Alaina W.
06/27/2026
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