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Check Valve for 40MM Single Handle Faucet Cartridges

Tan plastic check valve with blue rubber seal.
Check Valve for 40MM Single Handle Faucet Cartridges - Image 2
Check Valve for 40MM Single Handle Faucet Cartridges - Image 3
Check Valve for 40MM Single Handle Faucet Cartridges - Image 4

chat iconWHAT OUR CUSTOMERS SAY…

“This place is amazing. I live in San Antonio, Texas and there are a few plumbing stores with vintage parts but they never have what I need and the ordering process takes them weeks. I found a rare part at Noels by reverse image search but they will do it for you. I've used them 3 times. Their agents are knowledgable and polite. They will find you the same part or the after market part and get you going on your way. They have 2-3 day shipping. My house was built in the 30's and they know exactly what the after market parts are that I need. I save money and time going to them. I sure wish they were in San Antonio! I will just go directly to Noel's next time - they are LEGENDS! ”
-BP W.
06/21/2026

$22.47

 

Check valves for faucet cartridges, are designed to prevent backflow and ensure unidirectional water flow. They are essential in single-handle shower faucets to control temperature and prevent mixing. These components are crucial for maintaining proper, consistent water pressure and flow.

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: 66802 Category: Tag:

Check Valve for Single Handle Ceramic Cartridges

 

  • Pressure Balancing: In single-handle shower and bath faucets, check valves help maintain a consistent temperature by preventing sudden pressure changes.
  • Cross-Flow Prevention: Prevents water from a high-pressure line (e.g., cold) from flowing into a lower-pressure line (e.g., hot) when the faucet is off.

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…

“Prompt, competent service. Got it, installed it, everything works. Even shipped to Canada on a part that was difficult to find here. 5 Stars for sure. ”
-Jim
04/05/2022
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