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Delany 143-ACQ Diaphragm Operating Assembly for Toilets (Drop In Kit)

Black rubber diaphragm white delrin seat and nut brass stem and rubber seat.

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“I sent in photos of a broken cartridge (still installed, couldn’t take it out myself due to water shut-off restrictions in a condo) and even with the limited view they were able to tell me the exact part I needed so I could have it ready for the plumber (meaning I didn’t need to pay for a plumber to come out twice!!) ”
-Alaina W.
06/27/2026

$104.27

 

The Delany 143-ACQ is a diaphragm drop-in kit used for repairing Delany Flushboy and Flushboy Ultra flush valves in toilets, specifically for models with a 4.5 GPF (Gallons Per Flush) flow rate.

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.

SKU: 11125 Category: Tag:

Delany Flushboy Drop In Kit for Toilets

 

143-ACQ

 

  • This part is a diaphragm operating assembly used to repair and maintain Delany Flushboy and Flushboy Ultra flush valves.
  •  The kit includes the diaphragm, refill ring, seat guide, Delrin seat, and fiber washer.

 

Related document

 

Delany Flushboy 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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06/08/2026
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