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Internet # 202624491

Model # RP50587

Store SKU # 531957

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Bathroom Sink, Kitchen Sink Cartridges 1.5 D Chrome

$46.25
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  • Repair cartridge for Delta faucets with DIAMOND Seal Technology
  • Genuine Delta repair part kit
  • Backed by Delta Faucet's Lifetime Limited Warranty
  • View More Details

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Product Details

About This Product

The Delta Single-Handle Valve Cartridge Features Diamond seal technology. This cartridge is ideal for single-handle kitchen and lavatory faucets (not included). As part of a company that delivers water every day through millions of faucets worldwide, Delta provides a lifetime limited warranty on all parts to the original consumer. Delta is committed to providing you the best experience with water. Another way that Delta is more than just a faucet.

Highlights

  • Plastic construction
  • Diamond seal technology
  • For use with single-handle kitchen and lavatory faucets (not included)
  • Compatible with Delta faucets
  • Genuine Delta repair part
  • Lifetime limited warranty covers parts and finish defects
  • Click here to shop more Delta products
  • Return Policy

Product Information

Internet # 202624491

Model # RP50587

Store SKU # 531957

Specifications

Dimensions

Product Height (in.)

2.00 in

Product Width (in.)

1.50 in

Details

Application

Bathroom Sink, Kitchen Sink

Color/Finish

Chrome

Color/Finish Family

Chrome

Fits Faucet Brand

Delta

Handle Part Type

Cartridges

Material

Plastic

Pack Size

1

Plumbing Part Type

Cartridge

Warranty / Certifications

Manufacturer Warranty

Faucet and Finish Lifetime Limited Warranty

Questions & Answers

Will this fit my 19940T-DST model?
ByJul 3, 2026
1 Answer | 
Answer This Question

Hello! No, your model uses the RP73000 cartridge. https://www.deltafaucet.com/parts/product/RP73000.html Please reach out with further questions! Best Regards, Tim Digital Communications Specialist

By|Jul 13, 2026


    Does this fit Signature Single-Handle Pull-Out model 470-DST?
    ByApr 25, 2026
    1 Answer | 
    Answer This Question

    Hello! Yes, this is the cartridge for model 470-DST. Please reach out with further questions! Best Regards, Tim Digital Communications Specialist

    By|Apr 28, 2026


      Does this fit Delta Single-Handle Pull Down Sprayer Kitchen Faucets Model No. 19978-DST, Model No. 9678-DST and Model No. 9178-DST? Thanks
      ByApr 18, 2026
      1 Answer | 
      Answer This Question

      Hello Customer! Thank you for your question and we are happy to help. The Delta 19978-DST, 9678-DST, and 9178-DST use the RP50587. With any further questions or concerns, please do not hesitate to reach out to us again. Best Regards, Carrie

      By|Apr 20, 2026


        What is orange tab for on cartridge
        ByMar 28, 2026
        1 Answer | 
        Answer This Question

        Hello! This will allow you either only hot or cold water if switched to one side or a full range of temperature when switched to the other side. Please reach out with further questions! Best Regards, Tim Digital Communications Specialist

        By|Mar 31, 2026


          Does this fit model 19790Z-BLSD-DST?
          ByMar 19, 2026
          1 Answer | 
          Answer This Question

          Hello! Yes, model 19790Z-BLSD-DST uses the RP50587 cartridge. Please reach out with further questions! Best Regards, Tim Digital Communications Specialist

          By|Mar 19, 2026


            Will it fit model 100 CF
            ByMar 13, 2026
            1 Answer | 
            Answer This Question

            Hi Darvin, Thank you for your question about the Delta Faucet RP50587. This fits 100-DST series faucets. But not 100 faucets that are not DST, like 100LF-WF. Please reach out with any additional questions! Best Regards, Bryan Digital Communications Specialist (800) 345-3358

            By|Mar 16, 2026


              19962z will it fit
              ByFeb 24, 2026
              1 Answer | 
              Answer This Question

              Hi BIll, Thank you for your question about the Delta Faucet RP50587. This would not fit a 19962Z-DST faucet. A replacement cartridge would be RP73000. Please reach out with any additional questions! Best Regards, Bryan Digital Communications Specialist (800) 345-3358

              By|Feb 27, 2026


                Does this fit model 199227
                ByFeb 22, 2026
                1 Answer | 
                Answer This Question

                Hi Hieu, Thank you for your question about the Delta Faucet RP50587. This cartridge is used by 19922Z-DST kitchen faucets. Please reach out with any additional questions! Best Regards, Bryan Digital Communications Specialist (800) 345-3358

                By|Feb 27, 2026


                  Viewing 1-8 of 126

                  Customer Reviews

                  4.4 out of 5

                  • 4.4 out of 1,491 reviews
                  • 62% recommend this product
                  Filter by:
                  Showing 1-10 of 1,491 reviews
                  Waste of money
                  What a waste of money. Lasted less than 6 months before it did the same thing it did before. Cheap components… planned obsolescence much?
                  by
                    1 found this review helpful
                    Leaky McLeakerson
                    Leaked after 2 years. Ruined my countertop before I noticed the slow drip leak.
                    by
                    Response from Customer CareJul 6, 2026
                    Hello, Please accept our sincere apology for the inconvenience you are experiencing. Please contact us directly by phone at 1-800-345-3358 or email at customerservice@deltafaucet.com as we would like to resolve this matter for you at this time. Best Regards, Tim Digital Communications Specialist
                      Dripping/failure due to installation torque?
                      Our 2020 kitchen remodel has main & bar sink Delta faucets that both have this cartridge, and both have failed every ~2yrs with the exact same issues reported by other reviewers: drippy, requiring fiddling with handle position/pressure to get it completely shut off. For our last replacement, RP50587 cartridge instructions now have a new NOTICE inserted with instructions on how to properly torque the bonnet nut holding the cartridge in place to between 70-90 in-lbs (see attached clip). I used a torque wrench/socket as specified, and after several months our faucet is still operating smoothly with no hints of dripping or stiffness. Could it be that over-tightening to more than 90in-lbs during manufacture/replacement been found to cause cartridge damage and dripping?? While we otherwise really like our faucets, and although Delta support has always been helpful and honored warranty replacement quickly, I think some "get well" actions should happen here: The "Maintenance & Installation Sheet" posted by Delta here is old (Aug2010) and should be updated to the current version with NOTICE about proper torque range. The old version only has a WARNING about not getting it securely tightened enough. Similarly, the Maintenance section of faucet instructions that use this cartridge should be updated, instead of just that WARNING about failing to get the bonnet nut tight enough. People getting warranty replacements should be alerted by Delta support to this torque range requirement, and instructed to pass this along if a plumber is doing the replacement.
                      by
                      Response from deltafaucetMar 26, 2024
                      Hi ChuckPDX, Thanks for being a loyal Delta Faucet customer, and we appreciate your honest review of the RP50587! As the manufacturer, we are committed to supplying our consumers with quality products that deliver the expected performance. Your feedback is important to us, as it helps us refine our products and services. Please contact us with any further questions. Best regards Emma Digital Communications Specialist
                        • Recommended
                        There were only two cartridges available in the store. BOTH had been opened and poorly scotch taped back together…….Cartridge seems to be in working condition.
                        by
                        Response from DeltaFaucetJan 27, 2024
                        Hi meersr,

                        Thank you for your feedback on the RP50587.

                        Your feedback is important to us, as it helps us refine our products and services.
                        Please contact us back with any further questions.

                        Best regards

                        Nicole
                        Digital Communications Specialist DeltaFaucet
                        • Verified Purchase
                        Delta faucets don’t last
                        The cartridges on these models are made to fail in less than 2 years. Never again will I pay for delta.
                        by
                        Response from Customer ServiceAug 28, 2023
                        Hi AmyH, Thank you for your review of the Delta Faucet Cartridge MODEL#: RP50587. Please accept our sincere apology for the inconvenience you've experienced. We are always happy to assist you. Quality is very important to us and our products undergo rigorous testing to ensure high-quality performance.   Our products do have a Limited Lifetime Warranty that covers, all parts (other than electronic parts and batteries) and finishes of Delta® faucets purchased from authorized Delta sellers to the original consumer purchaser to be free from defects in material and workmanship for as long as the original consumer purchaser owns the home in which the faucet was first installed. I have included a link below for the warranty information. https://www.deltafaucet.com/service-parts/warranty We appreciate your business and look forward to continuing to serve you. Please contact us directly if you have any further questions.    Best Regards,   Kelley Digital Communications Specialist
                          Correct part
                          This is the second time replacing this part. It seems to last about 4 to 5 years then starts to go bad. I don't mind replacing, but the price is a joke, $54 for a part that probably costs $5. Nice of you offer free shipping. Which brings me to why so big of a box?
                          by
                          Response from Customer ServiceFeb 23, 2023
                          Hi kimbeagle, Thank you for your feedback on the RP50587. Your feedback is important to us, as it helps us refine our products and services. I have included a link below to our Limited Warranty. https://www.deltafaucet.com/warranty Please contact us back with any further questions. Best regards Nicole Digital Communications Specialist
                            Awesome! Perfect Fix
                            Delta made me love their products. They guaranteed the replacement and helped me through the process. I will always buy Delta. Call them. There associates will help you identify what you need and will send it to you free if it is under warranty. They have american speaking representatives that walk u through the process. Best customer service.
                            by
                            Response from Customer ServiceMay 14, 2022
                            Hello Valued Customer, Thank you for your review! We are happy to hear that this product did meet your expectations. Please reach out to us if you experience any issues with your product. Best Regards, Kayla
                              • Recommended
                              Worked Perfectly
                              I am a landlord with multiple properties. It makes my life much easier when repairs can be done quickly and effectively. This part was easy to replace. I wish it hadn’t stopped working in the first place, but that’s the way it goes!
                              by
                              Response from Customer ServiceMar 30, 2022
                              Hello Tompurdy! Thank you for your review on the Delta Cartridge - DIAMOND™ Valve - 1H MODEL#: RP50587. We are happy to hear that this product did meet your expectations and we would be more than happy to assist you.   Thank you for being a loyal Delta customer. We appreciate your business and look forward to continuing to serve you. Please contact us directly if you have any further questions.   Best Regards,  Carrie
                                • Recommended
                                Six years and still going
                                We moved into our home six years ago, and this cartridge was in the faucet the previous owner had installed. It recently started to leak, and using the Delta website, I disassembled the faucet, removed the cartridge, cleaned it, reassembled it and now have a leak-proof faucet once again!
                                by
                                Response from Customer SolutionsJun 16, 2021
                                Hello Bruno! Thank you for your review! We are happy to hear that you are pleased with your Delta Faucet Cartridge DIAMOND™ Valve 1H MODEL#: RP50587! Your feedback is important to us, as it helps us refine our products and services. Thank you for being a loyal Delta Faucet customer. We look forward to continuing to serve you. Please feel free to contact us back for further assistance. Best Regards, Kelley
                                  • Recommended
                                  How to fix leaky cartridge
                                  We have a 3 year old Delta faucet that started leaking. When I disassembled the cartridge, I found that the cheap white plastic sleeve or mounting disc that separates the black articulating ball from the white ceramic disc had broken apart. See attached photo. I attempted to glue this disc, so it looks less broken. However you can see that the half circle part that protrudes breaks down. In my case, it had almost completely separated or ripped off of the main white disc surface. This wear is from the protrusion from the black plastic ball wearing against this surface even though it is heavily lubricated from the factory. Because of this issue, this made it difficult to completely close off the water to the faucet. I disassembled the entire cartridge, cleaned all the parts, and reassembled without the plastic sleeve. I added some lithium grease lubricant to the ball assembly. The faucet now works and water shuts off completely without dripping. However, without the the plastic sleeve there is a little extra "slack" that you can feel when articulating the handle. The plastic sleeve acted to reduce or eliminate this slack, but when it breaks down, it interrupts with the proper movement of the ceramic discs. So, the faucet can operate without the disc, but you do have a bit of slack until the black ball engages the half circle slot in the white ceramic disc. While not 100% ideal, this is a good enough fix for an average product. I think if Delta manufactured this plastic disc out of a stronger material, they would eliminate the problem.
                                  by
                                  Response from Customer SolutionsJun 24, 2020
                                  Hello chanbizzle! This is Antoine from the Customer Service Team at Delta Faucet Company. Thank you for your review. I'm sorry to hear if you were experiencing an issue with your Delta cartridge and I would be happy to help further. Please Please call us at 1(800) 438-6673 if you have any further questions. We greatly appreciate your feedback as it helps us refine our products and processes. Please let us know if you have any questions.
                                    Showing 1-10 of 1,491 reviews

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                                    Product Snapshot

                                    Ideal for Delta faucet owners seeking reliable and durable single-handle cartridge replacements with a lifetime warranty.
                                    Ideal for Moen faucet owners seeking easy cartridge replacements. Durable brass construction with a limited lifetime warranty ensures lasting performance.
                                    Ideal for Delta Monitor 1300/1400 series, ensuring balanced hot/cold water pressure and easy DIY cartridge replacement.
                                    Ideal for single-lever faucet repair, ensuring long-lasting performance with its ceramic cartridge and lifetime warranty.

                                    Flow Rate Control

                                    Temperature Control

                                    Number of Handles Supported

                                    1
                                    1
                                    1

                                    Valve Type

                                    Ceramic

                                    Anti-Scald Feature