Best in 7 days
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
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Description
Annovi Reverberi Gymatic 3B Unloader Valve with Adjustable Chemical Injector – 250 Bar – Part No: 20399 / 20400 / 20401 / 20762The Annovi Reverberi Gymatic 3B Unloader Valve with Injector is a pressure regulating control set designed to manage system pressure while incorporating an adjustable chemical injector. This valve automatically relieves pump pressure when the trigger is releasedreducing pump wear and enhancing system longevity. While pump pressure drops to zero at shut off, line pressure remains trapped, making it ideal for high efficiency cleaning operations. Rated
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Best in 7 days
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Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 1603 reviews
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Product Reviews
★★★★★ 4
It works
Size: 2+12+12+2 pack
Fits as expected and it's nice to have so many replacement parts. This item is priced well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
★★★★★ 5
Fits my old eufy
Size: 3+12+12+2+1 pack
This set fits my older model eufy and has extra parts for newer models. The filters did not fit our model (our fault for not doing proper research) but the fan sweeper is awesome.
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Reviewed in the United States on October 5, 2024
★★★★★ 5
Lots of extras!
Size: 2+12+12+2 pack
The brushes are a bit flimsier than the original but otherwise fine. I needed it for the rectangular filters more than anything
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Reviewed in the United States on March 7, 2026
★★★★★ 5
EUFY 11S
Size: 2+8 pack
Used to replace the ones for my EUFY 11S vacuum. They fit just like the ones and got my vacuum back to cleaning really good. Didn’t realize how loud my vacuum had become until I replaced these parts.
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Reviewed in the United States on December 19, 2025
★★★★★ 5
Get this!
Size: 3+12+12+2+1 pack
Very nice pack of essentials for my robot.
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Reviewed in the United States on March 17, 2026
