Single Handle Kitchen Faucet with Spray

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4380-RB-DST is rated 4.1 out of 5 by 85.
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  • 3-hole installation
  • DIAMOND Seal Technology: a lifetime of reliable performance
  • Backed by Delta Faucet's Lifetime Limited Warranty
Finish: Venetian Bronze
List Price*: $594.10
Base Parts
List Price*: $594.10
Configurable Parts
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 that Delta faucets are backed by our Lifetime Limited Warranty. *Industry standard is based on ASME A112.18.1 of 500,000 cycles.
  • 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
  • Everything you need is together in one convenient box, including integrated InnoFlex PEX supply lines
  • 3-hole 6-16" installation
  • Includes convenient side sprayer
  • High-arc spout swivels 180degrees
  • 45 in. long hose provides outstanding reach


Special Features

  • With Side Sprayer

Installation Information

3-hole 6"-16" installation

  • Flow Rate: 1.80 gpm @ 60 psi, 6.8 L/min @ 414 kPa
  • Spout Height: 13"
  • Spout Length: 10-1/2"
  • Deck to Outlet: 9-3/4"
  • Fittings Type: 3/8" compression fittings
  • Deck Thickness: 2.5"
  • Supply Lines: Included InnoFlex® Pex-C Supply Lines
  • Valve Type: DIAMOND Seal Valve
Rated 3 out of 5 by from Disappointed My wife received a replacement Delta Kitchen Faucet for a defective model. The new faucet is model 4380-AR-DST direct from Delta on April 17 2014. Over the last month we have noticed placement of the handle affects whether the faucet drips, runs on or actually shuts off. After reading installation paperwork I see I must purchase an entire valve assembly to fix the drip. I feel this product should have lasted longer than 4 and one half years.
Date published: 2019-01-02
Rated 5 out of 5 by from Replacement for a discontinued model We very happy with this faucet, it is very nice looking. We noticed it has better water pressure than the old model.
Date published: 2018-11-29
Rated 5 out of 5 by from The Best bought this item several years ago. Delta came through with the right parts and I fixed problem in no time. So thankful!
Date published: 2018-09-28
Rated 5 out of 5 by from Great features We're entirely pleased with the quality and features of this faucet set. We especially like the high arc of the faucet. The side sprayer works well and seems durable. It's not easy to find a side sprayer now, since pull-down sprayers have become more popular. This set meets our needs perfectly.
Date published: 2018-09-23
Rated 3 out of 5 by from Good color Searched everywhere to find replacement faucet for three holes in antique bronze. Works beautifully but very disappointed with the plastic piece covering the sprayer. Would have been so easy to make it bronze metal as well. Entire fixture now looks cheap
Date published: 2018-08-18
Rated 5 out of 5 by from Looks great, works great Purchased the Delta 4380-AR-DST Arctic Stainless Pilar Kitchen Faucet with Side Spray about 2 weeks ago. It looks good, works well and just feels sturdy when when using the product. I bought Delta, due to past experience and lifetime warranty.
Date published: 2018-07-11
Rated 1 out of 5 by from Constantly breaking. We had the Pilar faucet less than one year when the collar under the handle broke. We replaced it, and then it broke again. After replacing the collar a second time, now the spray attachment is broken. Due to system upgrades, I can't contact Delta to see if they will replace it. Meanwhile, we can't use our sink. Since I will be paying a plumber, AGAIN, to fix this faucet, I am hoping Delta will at least replace the part.
Date published: 2018-04-30
Rated 5 out of 5 by from looks great and installs smoothly. my son did the installation, which required removing the sink in order to be able to remove the old unit. but with the ease of installing the Delta faucet the entire job only took an hour and a half. very satisfied .
Date published: 2018-03-28
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Is there a laminar flow faucet attachment compatable with this model? Or an adaptor that would work?

Asked by: Taylor
Thank you for your question, Taylor! Although we do not offer a laminar flow aerator for this model, this spout has a thread size of M21.5x1-6G. The RP51505 adapter will convert this size to a male 55/64”-27 thread. You may then be able to find a compatible laminar flow aerator locally or online. https://www.deltafaucet.com/parts-product-detail?modelNumber=RP51505 Best regards, Edward
Answered by: DeltaFaucet234
Date published: 2018-10-18

What country is it manufactured in?   I want a USA made faucet. Please list the country of origin in the details if possible. I am willing to pay more for better, USA quality.

Asked by: Bob001
Hello Bob001, Thank you for your question. As a global manufacturer, we source and assemble a number of parts around the world. No matter where in the world our products our sourced, manufactured or assembled, they are built to Delta Faucet Company's exacting specifications and are quality tested to ensure long-lasting performance. The location information on the back of the box will tell you where your specific faucet model was made. Best regards, Tanya
Answered by: Delta Faucet
Date published: 2019-01-22

The button on the sprayer sticks open, and I have to pull it back out to turn off the sprayer. How can I un-stick th button? Does it need a new spring inside? 

Asked by: TechiePhil
Hi, TechiePhil! Thank you for your question. Unfortunately, if the sprayer button is stuck, we do recommend to replace the sprayer assembly. The part number for this is RP53880AR. Here is a link to the part on our website: https://www.deltafaucet.com/parts-product-detail?modelNumber=RP53880AR To order, please contact our Delta Customer Service line at (800)345-3358. We are available Monday-Friday, 7am-7pm, CST and Saturday, 8am-5pm, CST. Best Regards, Rosanna
Answered by: DeltaFaucet11
Date published: 2018-04-02

I am considering purchasing this model of faucet but would like to know if the water supply can be mounted on the left, spout in the center and spray

Asked by: Rob
Our installer told us we could have the order be any way we wanted. We opted for as shown, but water supply on left would be good for lefties!
Answered by: Micbabs
Date published: 2018-03-10

When I turn my faucet on the water splashes back all over the sink my clothes and the floor. Is there any way this can be controlled?

Asked by: jean
Thank you for your question. Delta Faucet model # 4380-SS-DST flows at 1.8 gpm at 60 psi. You can make your faucet flow at a lower rate by replacing the aerator. We have a .5 gpm with model number RP71111 and 1.0 gpm with model number RP72730. By lowering the gpm on your faucet, it may help with splashing. Otherwise, we can recommend not to turn the faucet on to its full force if it is mounted on a smaller sink.
Answered by: Delta
Date published: 2016-02-18

Can the water handle be mounted on the right

Asked by: Bren
Hi, Bren! Thank you for your question. The handle for the 4380-DST can be installed on the right or left of the spout assembly. Best Regards, Rosanna
Answered by: Rosanna
Date published: 2017-09-11

I love the faucet, but I need to connect a portable dishwasher to it using a fitting with a 15/64" - 27 outside thread. It is a different size than the aerator. Is there an adapter piece available? I don't want to go back to manually washing dishes.

Asked by: JoeStanley
Hi, JoeStanley! Thank you for your question. This faucet aerator has a thread size of M21.5x1-6. We do have an adapter, RP51505, that will convert from 21.5X 1-6 g metric thread to 55/64”-27 standard thread. Here is a link to this adapter: https://www.deltafaucet.com/parts-product-detail?modelNumber=RP51505 Best Regards, Rosanna
Answered by: Delta Faucet
Date published: 2018-06-28

When we use the sprayer, water continues to flow out of the faucet. Is this normal, or should the faucet stop flowing while the sprayer is in use?

Asked by: Bob
Hi Bob, Thank you for your question! The water should stop from the main spout while running the sprayer. If it continues the run the diverter needs to be replace. The diverter is apart of the sprayer assembly part number RP53880AR. Best regards, Brandis
Answered by: DeltaFaucet7
Date published: 2016-03-31
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