Delta®
Cartridge - DIAMOND™ Valve - 1H
Model#:
RP50587
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PRODUCT FEATURES
Documents & Specs
Product Support, Repair Parts & Technical Specifications
Installation Information
Overall Height (in.) :
5
Valve Type:
Ceramic valve
REVIEWS
Rated 1 out of
5
by
Amosporr from
Leaky McLeakerson
Leaked after 2 years. Ruined my countertop before I noticed the slow drip leak.
Date published: 2026-06-29
Rated 2 out of
5
by
eritavi from
Second replacement cartridge within a year
This is the second time I’m replacing this cartridge. I replaced it last year and it’s already malfunctioning.
Date published: 2026-06-18
Rated 1 out of
5
by
Daniel from
Junk
Like many other reviews, mine lasted about two years. You know how bad your product has to be to only have a 2.9 review rating? I guess they know they have you over a barrel, since it's buy another one or new faucet.
Date published: 2026-06-03
Rated 1 out of
5
by
Ledge89 from
Poor Quality Cartridge
The product quality is very poor for this particular product. The cartridge typically only lasts about a year before it starts leaking and needs to be replaced. We are on the 5th replacement cartridge so far and it needs to be replaced again after less than a year being installed. We are on city water in the Metro Nashville area and have a filter on the water line as well so the problem shouldn't be with the quality of the water. And I'm having trouble getting through to Delta customer service right now as the 800-345-3358 number is not working either. Very dissappointed in the quality of this product even with the lifetime warranty because I have to change the cartridge every year. And, according to the other reviews I've read on the Delta website, a number of other people are having the same problem. The older style product with replaceable rubber gaskets was much more reliable and easy to service.
Date published: 2026-05-05
Rated 5 out of
5
by
Athena from
Very Useful Features
I love my Leland Arctic Stainless kitchen faucet & Delta has been wonderful since I purchased it from them through Amazon in 2013. They've sent me many free replacement cartridges over the years, & even the water lines & a different spray head since then b/c I was putting up with something that I didn't realize shouldn't be happening. Evidently, this faucet has evolved since 2013 & I'm currently using a head they sent me that has 2 different types of sprays. It's time for a new cartridge under the handle b/c the spray head drips at times which is what happens when it doesn't dock properly as it's done so well in the past. Delta has evidently improved this cartridge also b/c it seems to have lasted much longer than in the past.
Date published: 2026-04-18
Rated 2 out of
5
by
TRJo from
MEH
Faucet leaks often and is hard to get it just right to shut off. Will replace cart and see if that helps. Only 4 years old.
Date published: 2026-04-17
Rated 5 out of
5
by
Hank from
Number one quality sink valve cartridge
This valve cartridge is will designed, easy to replace when it starts getting old and starts dripping. And warranted for life by Delta! Be sure to register your purchase so Delta can replace it if or when it starts leaking. Delta has a wonderful warranty and quick replacement of any of their products!
Date published: 2026-04-14
Rated 5 out of
5
by
bob27 from
Perfect example of our corporate hellscape!
What a Product! It's full of great features like cheap plastic, leaks and profits winning over quality!
Date published: 2026-03-15
Q&A
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