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Pioneer X-4400005 Pressure Balance Spool

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Stainless spool body with bright brass threaded top with black rubber o-rings and stainless internal piston.
Stainless spool body with bright brass threaded top with black rubber o-rings and stainless internal piston.
Stainless spool body with bright brass threaded top with black rubber o-rings and stainless internal piston.

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“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

$50.17

 

The Pioneer X-4400005 is a pressure balance spool used as a replacement part for single-handle tub and shower valves. It is designed to maintain steady water temperature and prevent sudden fluctuations (scald protection) during use.

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: 20512 Categories: , Tag:

Restore your shower’s safety with the Pioneer X-4400005. This crucial internal spool, measuring 2 3/8 inches in length, balances hot and cold water pressure to prevent dangerous temperature spikes and scalding in single-handle shower systems.

 

X-4400005

 

  • It acts as a balancing mechanism within the valve to ensure safety and user comfort by stabilizing water temperature.
  • Fits 4010B 1910B & 4011B series valves
  • 2 3/8″ length

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.

 

 

chat iconWHAT OUR CUSTOMERS SAY…

“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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