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Spool Assembly for Delta NRP-574

Stainless steel balancing cartridge with bright brass threaded top with black orings.
Stainless steel balancing cartridge with bright brass threaded top with black orings.
Stainless steel balancing cartridge with bright brass threaded top with black orings.

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“The staff knew exactly what I needed and where to find it. Quick in and out. ”
-Andre W.
06/15/2026

$61.27

 

The Delta Faucet RP574 is a pressure balancing spool assembly used in older Delta tub and shower faucet models to regulate water temperature.

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

SKU: 23510-1 Category: Tags: ,

Restore hot and cold water stability to your shower with the Delta RP574 Pressure Balance Spool Assembly. While designed for older Delta faucet models, this essential repair part is the perfect solution for fixing fluctuating water temperatures without needing to replace your entire shower valve.

 

NRP-574

 

  • The RP574 is a pressure balancing valve spool designed to prevent sudden changes in water temperature (scald guard feature) when water is run elsewhere in the house.
  • It is compatible with specific older Delta tub and shower faucet models, including the 600, 900, 1600, 1804, 1814, 1824, and 1848 series.
  • Compares to OEM RP574
  • Use as a generic replacement for OEM RP574
  • Stainless steel piston & body
  • Solid brass slotted hub
  • Replaces old OEM Delta spools

 

   Customer submitted images. 

 

Common questions about this product

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

Yes, this aftermarket part will replace your OEM 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.

 

 

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“Y'all are amazing. I live in Texas and it's faster to order express from Noel's than go to local parts stores. Customers can text Noel's a picture of the part they need and Noel's will find that part or the equivalent and text the link. They have 2-3 day shipping available. The staff answers the phone quickly, politely and they know their stuff! The unit I needed plumbing parts for was built in the 30s. No matter, Noels has me covered. I highly recommend them. Thank you Noel's for your efficient, old school excellence combined with current technology! You have saved me so much time, money, and aggravation! A++++++ ”
-Thalia,
07/03/2026
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