Trinsic®
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DIAMOND™ Valve - Euro-Motion - Short Stem

Model#: RP73000
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Trinsic®
View Full Trinsic® Bathroom Collection
DIAMOND™ Valve - Euro-Motion - Short Stem
Model#: RP73000
List Price: $86.10
Online Price: $68.88
Free Ground Shipping All Orders $49+
Add to Favorites
Find local Delta® installers.
PRODUCT FEATURES
The Delta® single-handle valve cartridge is ideal for single-handle kitchen and lavatory faucets. Delta® faucets with DIAMOND Seal® Technology perform like new for life with a patented design which reduces leak points, is less hassle to install and lasts twice as long as the industry standard. You can install with confidence, knowing Delta products are backed by our Lifetime Limited Warranty.
  • DIAMOND Seal® Technology is less hassle to install and helps your faucet perform like new for life, reducing leak points and lasting twice as long as the industry standard
  • Innovative diamond sealing surfaces
  • For use with single-handle kitchen and lavatory faucets (not included)
  • Genuine Delta Part
  • Backed by Delta Faucet's Lifetime Limited Warranty
Special Information
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California Prop 65 WARNING
Special Information
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California Prop 65 WARNING
Documents & Specs
Product Support, Repair Parts & Technical Specifications
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Installation Information
Overall Height (in.) :
2-1/4
Valve Type:
Euromotion DIAMOND(TM) Valve
REVIEWS
Rated 5 out of 5 by from Slow hot water, how do I return it? Did not need it, it was the main water valve that cut off the hot wster
Date published: 2026-04-18
Rated 2 out of 5 by from It works, but an unhappy journey I did a lot of work ahead of time looking up old documentation validating the exact right part — RP73000! Ordered the part and was sent me the wrong part. Called back, Delta said they’d send again overnight express. Took 6 days to arrive. This one was an RP7300, but the package had already been opened and the cartridge was loose in the shipping bag. I installed it anyway and had the exact same problem other reviewers had that the stem wasn’t threaded. Removed the cartridge from the faucet and by force-turning the screw into the stem with the allen wrench, it created a thread in the soft metal of the stem. Reinstalled and it works. Side note - the Brizo side of Delta is fabulous.
Date published: 2025-12-22
Rated 3 out of 5 by from No Threads in Stem for Set Screw I purchased this part through Amazon. It is a Delta Genuine Part. There are no threads in the stem so the set screw cannot be installed. I will return the unit to Amazon and request a replacement.
Date published: 2025-12-19
Rated 1 out of 5 by from Always leak. Terrible quality Had to replace 2 out of 3 faucets using this part RP73000 due to leaking within 4 years of moderate use from my girlfriend and I.
Date published: 2025-09-29
Rated 1 out of 5 by from Terrible quality DO NOT BUY I’m incredibly disappointed with the quality and design of this product. It’s over-engineered in all the worst ways. The small handles may look sleek, but the internal design is a nightmare. I expected better from Delta. This level of complexity and complete lack of repairability is unacceptable. It feels like Delta intentionally created an overly complicated valve system just to ensure constant replacements. These valves fail every 2–3 years, and at $60 each time, it's a complete rip-off. For a brand with Delta’s reputation, this is disgraceful. I’m upset and expect Delta to stand behind their product and offer to repair or replace it free of charge. Otherwise, I’ll be replacing the entire faucet—with a different brand.
Date published: 2025-05-09
Rated 2 out of 5 by from Original broken metal post connecting valve to handle broken clean off faucet is 6 years old virtual assist is useless and can't find an email address for customer service. sounds like this should be covered by a warrenty
Date published: 2024-12-29
Rated 2 out of 5 by from Quality part though lacking QC The cartridge seems like a quality part but the manufacturing quality control is lacking. Upon installing the new cartridge I noticed the hole on metal stem was missing threads, all Part seems to be of quality components except that the metal stem was missing threads. This is something that should have been caught during the manufacturing process. Another trip back to the big box store for a good replacement. Fit and operation were fine with the new cartridge. Would have been 4 stars without this added inconvenience.
Date published: 2024-07-19
Rated 4 out of 5 by from Easy to install with help The stem on my valve broke in half after 6 years of use. Delta sent me a replacement free of charge. I really appreciated the quick response and overnight shipping of the part. However, some instructions are needed to replace the unit. There is a hole in the stem where the handle is attached with a screw. The hole is not threaded and I thought it was the wrong part, but after sending an email to customer support, I learned the screw taps the threads when you screw it in the hole. This can't be done with the valve installed in the faucet as it requires too much force to start the threads. Once I understood this the valve was replaced and worked as designed. I am very happy with Delta's warranty and their rapid response sending replacement parts.
Date published: 2024-05-23
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Q&A

How often do you have to replace this cartridge? 

Asked by: Solo
Hi Solo, Thanks so much for contacting Delta Faucet Company about the RP73000! The cartridge can last a long time, but there are other outside sources that can cause the cartridge and its seals to wear down. Delta Faucet Company is happy to offer a Lifetime Limited Warranty for our customers. Please contact us directly if you have any questions or need additional assistance. Best Regards, Nicole Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

I'm installing a new RP73000. I'm not sure where to install the spring I found when I removed the old unit. Does it go underneath the bonnet nut or does it go between the nut and decorative cover? Include a schematic for me.

Asked by: George
Hello! The contact spring goes in front of the cartridge stem. Please see the following parts breakdown for further assistance. https://media.deltafaucet.com/PartsDiagram/DPD-K-19940T-DST%20Rev%20G.pdf Please reach out with further questions! Best Regards, Tim Digital Communications Specialist
Answered by: Digital Specialist
Date published: 2026-06-02

I have a sink faucet and is liking the plumber said we need to replace this peace and that will solve the issue. The model we have 19781Z-SPSD-DST. Is this the correct one for this model?  Please advise 

Asked by: Alexb
Hello Customer! Thank you for your question and we are happy to help. The Delta 19781Z-SPSD-DST uses the RP73000. With any further questions or concerns, please do not hesitate to reach out to us again. Best Regards, Carrie
Answered by: Carrie
Date published: 2025-08-12

I have a Delta model 9178-RB-DST kitchen faucet. It has a drip leak. First, is this covered by a warranty? And second, what parts and part numbers do I need to fix it? Thanks, Vann

Asked by: Vann
Hi Vann, Thanks so much for contacting Delta Faucet Company! The RP7300 is not the correct cartridge, the correct cartridge would be the RP50587. Also, I have included a link below for the warranty information. https://www.deltafaucet.com/service-parts/warranty Please contact us directly if you have any questions or need additional assistance. Best Regards, Nicole Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

Is this part correct for model 9178-RB-DST

Asked by: Melanie
Hi Melanie, Thanks so much for contacting Delta Faucet Company! The LELAND® Pull-Down Kitchen Faucet MODEL#: 9178-RB-DST uses the Cartridge DIAMOND™ Valve MODEL#: RP50587. Parts can be purchased online or locally. Please see our Where to Buy page for help finding dealers in your area or online. https://www.deltafaucet.com/where-to-buy Please reach out with further questions! Best Regards, Kelley Digital Communications Specialist
Answered by: Customer Service
Date published: 2023-03-02

How do you remove to clean sediment or replace.  I have a brand new faucet and the hot water slowly came to a small low pressure stream. 

Asked by: Tony
Hello Tony, Thank you for contacting us, I would be happy to help you. Low flow is caused by a blockage or debris, and we recommend flushing. To flush the unit, we recommend the following: Start with the easy stuff: Remove your aerator, wand or hose to check the flow through the unit without that part installed. If the flow is good, the piece you’ve removed is where the issue is. Soaking the part in a 50/50 mixture of white vinegar and water could help remove any particles or debris blocking the flow. If the water does not have a good flow, the problem could be in the faucet. Next, check the supply lines for debris: Turn the supply off to both the hot and cold-water lines. Once off, turn the handle on the faucet to the on position and leave it there to bleed the lines of any excess water. Next, disconnect the hot water supply line and place it inside of a bucket. Once the line is securely positioned into the bucket, turn on the cold-water supply. Please contact us back if you have any questions or need further assistance. Best Regards, Nicole
Answered by: Delta7
Date published: 2024-03-28

I have a 77338m3 and the part I found on your website was 77338m7. Are these the same?

Asked by: Penny rose
Hi Penny rose, Thanks so much for contacting Delta Faucet Company! No, the TRINSIC® DIAMOND™ Valve Euro-Motion MODEL#: RP73000 (77338m7) and the Euro-Motion DIAMOND Valve MODEL#: RP60114 are not the same. Please reach out with further questions! Best Regards, Kelley Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-14

My Zelia faucet (19781z-pnsd-dst) is dripping out of the bottom where the gray inlet lines go into the faucet under the sink. will a new cartridge fix this leak???

Asked by: Dave
Hello Dave, Thank you for your question! We apologize for the inconveniences you are experiencing and will be happy to help you. The Delta RP73000 will stop the dripping from your ZALIA Single Handle Pull-Down Kitchen Faucet. Please feel free to contact us back for further assistance. Best Regards, Kelley
Answered by: Kelley
Date published: 2024-03-28

Delta Faucet 19963-sssd-dst, replacement cartridge RP73000 does not match! End of part is a trapezoid shape considerably bigger than the SQUARE on original, thus way too large to fit into the SQUARE groove on handle! How do I get correct one?

Asked by: scott
Hello Scott! Thank you for your question! I am happy to help. The Delta RP73000 has changed and may not fit your current handle. The handle may need to be changed to a newer handle. Please reach out to us directly by calling 1-800-345-3358 for further assistance with this matter. Best Regards, Antoine
Answered by: Delta7
Date published: 2021-02-15

I have a delta1978oz-blsd-dst faucet that has low water pressure.would changing the cartridge with rp73000 solve this issue ? Ty

Asked by: Dino
Hi Valued Customer, Thank you for your question, please accept our sincere apology for the inconvenience you are experiencing. We will be happy to assist you in resolving this issue as quickly as possible. Please feel free to contact us directly for technical information at 800-345-3358. We are available Monday through Friday from 8 a.m. to 8 p.m. and Saturdays from 9 a.m. to 6 p.m. Eastern Standard Time. Thank you for being a loyal Delta Faucet customer. Best Regards, Themar Digital Communications Specialist (800) 345-3358 customerservice@deltafaucet.com
Answered by: Themar
Date published: 2025-09-08

I have an older (15 years) Delta Trinsic kitchen faucet. The valve is starting to stick and is harder to get the water flow to completely stop. Will this valve fit my faucet?  I could send a photo of it to confirm.

Asked by: MrKaufman

What would be the correct replacement valve cartridge for the Delta Essa 9113t-ar-dst. It is just the touch faucet. 

Asked by: Charlie
Hi Charlie, Thank you for your question regarding our Delta Faucet RP73000. The correct part is RP73000. Please feel free to contact us directly for technical information at 800-345-3358. We are available Monday through Friday from 8 a.m. to 8 p.m. and Saturdays from 9 a.m. to 6 p.m. Eastern Standard Time. Thank you for being a loyal Delta Faucet customer. Best Regards, Themar Digital Communications Specialist (800) 345-3358 customerservice@deltafaucet.com
Answered by: Customer Service
Date published: 2024-03-13

does the screw hole on the replacement valve come unthreaded from the factory? part# RP73000

Asked by: Anonymous
Hi John, Thank you for your question about the Delta Faucet RP73000. Yes, the hole is unthreaded. It uses a self-tapping screw. See here for more information: https://support.deltafaucet.com/s/article/Trapezoid-Cartridge-Stem-Handle-attachment-system Please reach out with any additional questions! Best Regards, Bryan
Answered by: Delta
Date published: 2025-10-08

What is the correct cartridge for the Model# 19957-SPSD-DST? I could not find anything in the parts list. The faucet has begun leaking and I'd like to replace the cartridge or whatever delta uses to control the water flow. Please advise.

Asked by: FuzzWuzz
Hi FuzzWuzz, Thanks so much for contacting Delta Faucet Company! The VALDOSTA® MODEL#: 19957-SPSD-DST uses the TRINSIC® DIAMOND™ Valve MODEL#: RP73000. Parts can be purchased online or locally. Please see our Where to Buy page for help finding dealers in your area or online. https://www.deltafaucet.com/where-to-buy Please reach out with further questions! Best Regards, Kelley Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

Will this fit my Essa 9113-AR-DST. We need a Euro-motion Diamond valve with a 2-1/4 stem

Asked by: Jeff
Hi Valued Customer, Thank you for your question, please accept our sincere apology for the inconvenience you are experiencing. We will be happy to assist you in resolving this issue as quickly as possible. Yes, this is the correct cartridge. Please feel free to contact us directly for technical information at 800-345-3358. We are available Monday through Friday from 8 a.m. to 8 p.m. and Saturdays from 9 a.m. to 6 p.m. Eastern Standard Time. Thank you for being a loyal Delta Faucet customer. Best Regards, Themar Digital Communications Specialist (800) 345-3358 customerservice@deltafaucet.com
Answered by: Themar
Date published: 2025-04-07

MY Handle has a rectangular receptor slot while the RP73000 has a trapezoidal shape Is there another version of this cartridge (RP73000) that has the rectangular shape (actually a square with one corner slightly angled.

Asked by: Joe175
Hi Joe, Thank you for your question about the Delta Faucet RP73000 DIAMOND™ Valve - Euro-Motion - Short Stem. We will be happy to assist you as quickly as possible. Yes, faucet models that use this cartridge may need the RP60114 cartridge instead in order to attach the handle. https://www.deltafaucet.com/parts/product/RP60114.html Also, see here for more information about single handle cartridges: https://www.deltafaucet.com/service-parts/find-parts-and-identify-product/common-parts/kitchen/leaks/single-handle-cartridges Please contact us directly if you have any questions or need additional assistance. We appreciate your business and look forward to continuing to serve you! Best Regards, Bryan Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

I bought a Delta Faucet Model #19933-DST from Lowe's on 6/5/2020. It has developed a small drip. Is the Delta Value Replacement part number RP73000 the correct replacement part?

Asked by: Don K
Hi Don K, Thanks so much for contacting Delta Faucet Company about RP73000! There was a cartridge change, I have included a link below to the parts diagram showing the cartridge. https://media.deltafaucet.com/PartsDiagram/DPD-K-19933-SD-DST%20Rev%20D.pdf Please contact us directly if you have any questions or need additional assistance. Best Regards, Nicole Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-02-08

Will this cartridge replace the previous model cartridge S1B 50974 for a single stem bathroom sink faucet?

Asked by: Ak907
Hello Ak907, Thank you for contacting Delta Faucet Company! I am sorry this information was not readily available, and I am happy to help you! Our Delta Faucet TRINSIC® DIAMOND™ Valve - Euro-Motion - Short Stem MODEL#: RP73000 is a model-specific cartridge, This will not replace older version faucet parts. Thank you for being a loyal Delta customer. Please contact us back for any further questions. Best Regards, Nicole
Answered by: Delta7
Date published: 2024-03-28

I have a Delta 4197-DST faucet. Does the RP73000 valve fit for replacement ? If not, what woul be to correct valve model. Tks

Asked by: Rony
Hi Rony, thank you for your interest in the RP73000! Unfortunately, the correct valve is RP60114. Please view the parts break down in the link below. https://media.deltafaucet.com/PartsDiagram/73952-PD%20Rev%20D.pdf Please contact us directly if you have any questions or need additional assistance. Best Regards,
Answered by: Customer Service
Date published: 2024-03-28

I have a 9113-DST single handle kitchen faucet, that I installed 5 + years ago, the faucet is leaking from the spout.  My manual list an RP73000 Cartridge assembly, is this a warranty part?

Asked by: Georgie
Hi Georgie, thank you for contacting Delta Faucet Company! We apologize for the issues you are experiencing! Please refer to the link below to gather more information about our warranty. https://www.deltafaucet.com/warranty We appreciate your inquiry. Please reach out directly if you have further questions! Best Regards, Kyra Digital Engagement Specialist
Answered by: Customer Service
Date published: 2024-03-28

I have a Delta kitchen sink single handle faucet with pull out spray head, not electronic, high arc shape. Handle is a smooth pencil sized cylinder jutting to the right of the water valve cartridge. It has a soap dispenser to the right. What is model #?

Asked by: Michael
Hi Michael, Thank you for contacting Delta Faucet Company! Please accept our sincere apology for the inconvenience you are experiencing. We will need more information to assist you better. Please watch out for an email from customerservice@deltafaucet.com. Best Regards, Emma Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

We have a Delta 9114-DST kitchen faucet. Recently the handle has gotten hard to move. Can this be resolved by removing the cartridge and rinsing out debris, or does the RP73000 cartridge need to be replaced?

Asked by: GeneV
Faucet number should be 9113-DST
Answered by: GeneV
Date published: 2025-01-16

Hello. I have a Delta Emery faucet. 19805z-spsd-dst.  6 months old.  Water is now coming out slow. What could it be. 

Asked by: Patrick
Hi Patrick, Thanks for your question regarding RP73000! We recommend flushing the faucet and I have included the instructions from our Help Center on how to do so below. https://support.deltafaucet.com/s/article/What-do-I-do-if-my-single-handle-kitchen-faucet-drips-from-the-spout-outlet-DST-model Please feel free to contact us with any questions or for further assistance. Best Regards, Emma Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

i have delta faucet mateo 9983t that drips through valve handle. o-ring is good, not sure about spring or cartridge assembly. can i bypass the electronics in this faucet to use as a conventional manual on/off/hot/cold valve

Asked by: Dave
Hello, Thank you for contacting us. I apologize about the issue you are experiencing but am happy to help you. The cartridge under the handle needs to be replaced to solve the leaking issue. To bypass the electronics you need need to turn the water off under the sink. Next, remove the top and bottom hoses that go into the solenoid and connect them together with the blue clip. Please contact us if further assistance is needed! Best Regards, Tim
Answered by: Delta
Date published: 2024-03-28

Does the RP7300 cartridge work with the “Dominic” 19940T-SPSD-DST model? Thank you

Asked by: Shell924
Thank you for your question, Shell924! Yes, the RP73000 cartridge works with Dominic model 19940T-SPSD-DST. Best Regards, Benjamin
Answered by: Benjamin
Date published: 2024-03-28

I have a delta marca model 1978oz-blsd-dst with low water pressure,would replacing the cartridge with a rp73000 resolve this problem? Ty

Asked by: Dino
Hi Valued Customer, Thank you for your question, please accept our sincere apology for the inconvenience you are experiencing. We will be happy to assist you in resolving this issue as quickly as possible. Please feel free to contact us directly for technical information at 800-345-3358. We are available Monday through Friday from 8 a.m. to 8 p.m. and Saturdays from 9 a.m. to 6 p.m. Eastern Standard Time. Thank you for being a loyal Delta Faucet customer. Best Regards, Themar Digital Communications Specialist (800) 345-3358 customerservice@deltafaucet.com
Answered by: Themar
Date published: 2025-09-08

will RP50587 work the same as this? replacing for - https://www.deltafaucet.com/kitchen/product/19963Z-SSSD-DST.html#documents-and-specs

Asked by: sink valve
Hi sink valve, thank you for contacting Delta Faucet Company! The 19963Z-SSSD-DST valve body will not work with RP50587. This model only accepts RP73000. Please reach out with further questions! Best Regards, Kyra Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

can this cartridge be rebuilt or is it a sealed unit that must be replaced if leaking.

Asked by: dave
Hi Dave, Thank you for your question about the Delta Faucet model RP73000 DIAMOND™ Valve - Euro-Motion - Short Stem. We will be happy to assist you as quickly as possible. The cartridge is not designed to be opened or repaired. A faucet dripping while off would likely be caused by water debris trapped in the faucet. Recommended maintenance would be to flush the faucet. Turn the supply off to both the hot and cold-water lines. Once off, turn the handle on the faucet to the on position and leave it there to bleed the lines of any excess water. Next, disconnect the hot water supply line and place it inside of a bucket. Once the line is securely positioned into the bucket, turn on the cold-water supply. Since the handle was left in the on position, the water will flow up the cold supply line, through the faucet cartridge, and back down the hot water line into the bucket. Leave this flowing for at least 30 seconds. After flushing, reconnect the hot water line and repeat this process with the cold water line to ensure all particles have been removed from both supplies. Please contact us directly if you have any questions or need additional assistance. Thank you for being a loyal Delta Faucet customer. We appreciate your business and look forward to continuing to serve you! Best Regards, Bryan Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

how to replace

Asked by: apetros
Hi apetros, Thanks so much for contacting Delta Faucet Company! Here is a link to the Maintenance and Instruction Manual for the Trinsic® DIAMOND™ Valve Model#: RP73000. https://media.deltafaucet.com/MandI/103705%20Rev%20A.pdf Please reach out with further questions! Best Regards, Kelley Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-08-01

Does this fit 9113-ar-dst 

Asked by: Dripping
Hello! Thank you for contacting Delta Faucet Company! Yes, the RP73000 fits our 9113-DST. We appreciate your inquiry. Please reach out directly if you have further questions! Best Regards, Kyra Digital Communications Specialist
Answered by: Delta
Date published: 2025-11-07
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