Spool Assembly for Delta NRP-574

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

Spool Assembly for Delta NRP-574 - Image 2

Spool Assembly for Delta NRP-574 - Image 3

WHAT OUR CUSTOMERS SAY…

“The cartridge in my kitchen sink broke last week so I've been without that sink for a whole week. I ordered a replacement from Noel's, which I could not find anywhere else and it worked perfectly. Thank you! You saved me! ”

-Matt F.

09/19/2025

$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, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

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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

Yes, this aftermarket part will replace your OEM 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…

“Just before an event, we had a 9 7/8" round drain cover snap in half. It was an odd size and Noel's was the only place that seemed to have one that would fit. We couldn't leave the hole exposed during the event, and Noel's was kind enough to make sure it was overnighted to us. Their effort was truly appreciated and the cover fit perfectly! I highly recommend them! ”

-Linda C.

03/27/2026