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Gerber DA603923 Check Valve for 1/2″ & 3/4″ Thermostatic Valve

Brass cartridge with black rubber o-ring and washer with brass screw.
Gerber DA603923 Check Valve for 1/2" & 3/4" Thermostatic Valve - Image 2
Brass cartridge with black rubber o-ring and washer with brass screw.

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“Hey these guys are awesome! If you need a part for a fixture they have it send a picture and they can tell you what it is, they know their stuff, they have the weird obscure things you can't find unless you get a whole trim kit or whatever. Worth the trip and the money. They save you tons of time definitely visit ”
-Justin H.
06/05/2026

$27.14

 

The Gerber DA603923 is a brass check valve designed for use with 1/2″ and 3/4″ thermostatic valves in plumbing applications. It is a genuine replacement part manufactured by Gerber.

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SKU: 54603 Category: Tags: ,

Built from solid, corrosion-resistant brass to ensure lasting durability, leak-free operation, and premium resistance against hard water tarnishing.

 

DA603923

 

  • Check valve / check stop.
  • Constructed of durable solid brass, which resists corrosion and tarnishing.
  • Designed for use with specific Gerber and Danze 1/2″ and 3/4″ thermostatic mixing valves, such as Model D155000BT.

 

Related document

 

Gerber D155000BT Thermostatic Valve Parts Breakdown

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.

 

 

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06/21/2026
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