Delta

Stem Unit & Seats - 1600 Series

Model#: RP1991

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RP1991 is rated 4.5 out of 5 by 2.
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  • Use with Delta 1600 series tub and shower faucets
  • Will not tarnish or corrode
  • Backed by Delta Faucet’s Lifetime Limited Warranty
California Prop 65 WARNING
Finish: Not Applicable
List Price*: $40.65
Base Parts
RP1991
List Price*: $40.65

Product Support, Repair Parts & Technical Specifications


Installation Information


Rated 5 out of 5 by from just as promised The parts came quickly and were just as promised. Installed quickly and did the trick.
Date published: 2010-11-22
Rated 4 out of 5 by from really reliable I am very pleased with the service. Could not find the right replacement. found your website, and it was a life saver. Otherwise, I would have had to replace the whole faucet... Thank You
Date published: 2010-06-05
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What Trim kit in stainless steel or brushed nickel is compatible with this cartridge?

Have been trying to get the right size trim for couple of months now. Every kit I tried had a wrong sleeve, which makes it impossible to secure the handle. Please help!
Asked by: Lana
Thank you for your question, Lana. Unfortunately, none of our current trim kits will work on an existing 1600 series valve. To use a current trim kit, you would need to install an R10000 rough-in valve. However, the trim parts for the 1600 series are available in the Chrome finish and can be purchased individually. These are the RP7577 escutcheon, RP6081 sleeve, RP196 screws, RP6079 bonnet. The handle may be replaced with the H71 knob or any H7_ lever handle, such as H79. Best regards, Jon
Answered by: DeltaFaucet3
Date published: 2018-10-22

What bonnet and sleeve can be paired with this stem?

I believe I will reuse the escutcheon I have (although it is not preferred). I am also wondering what handle - prefer a knob rather than a lever-type handle.
Asked by: crazyratt
Hi crazyratt, Thank you for your question. The bonnet nut for the 1600 series is RP6079 and the sleeve is RP6081. The knob handle that will work with your model is H71. The escutcheon plate is RP7577 (no diverter hole) or RP7578 (with push-button diverter hole). RP6079: http://www.deltafaucet.com/repairparts/details/rp6079.html RP6081: http://www.deltafaucet.com/repairparts/details/rp6081.html H71: http://www.deltafaucet.com/repairparts/details/h71.html RP7577: http://www.deltafaucet.com/repairparts/details/rp7577.html RP7578: http://www.deltafaucet.com/repairparts/details/rp7578.html Best regards, Jon
Answered by: DeltaFaucet3
Date published: 2018-02-18

can u show me how to install this part thank you

Asked by: littlemike2
Hi littlemike2, Thank you for your question! I have attached the parts diagram for the 1600 series for reference. First, please make sure that the water supplies are turned off to the valve. Remove the handle by removing the Phillips head screw on the front. If you have a clear knob handle, pry the cap off to get to the screw. Unscrew the bonnet nut. You should then be able to pull out the stem unit. You can scoop out the seats and springs using a pencil or Allen wrench. Best regards, Jon
Answered by: DeltaFaucet3
Date published: 2018-09-03

Can you help me to identify what model # my tub faucet is?

I need to know the Model # of my bathtub faucet & lever. I took it to Home Depot but they were unable to help me. They recommended emailing you. Attached are the photos of my shower/tub. What I'm looking for is a new cartridge for a Delta Scald Guard. I understand that has been discontinued. I think the replacement part I need is RP1991 listed below. Can you verify that for me before I place the order? Thanks, Jennifer
Asked by: Jennifer
Hi Jennifer, Thank you for your question! You have a 1600 series tub faucet, which does use the RP1991 Stem Unit. Best regards, Jon
Answered by: DeltaFaucet3
Date published: 2016-03-30

Will Delta part #RP6083 fit my

Please see picture. I have this cartridge RP1991 installed. The crystal knob is very close to the wall, and the hole on the wall is very small. Will plate #RP6083 fit? If it does, do you have a bronze one? if RP6083 won't fit, what do you recommend? Thank you very much!
Asked by: Grace
Hi Grace, Thank you for your question. Delta Faucet model RP1991 is for a 1600 series faucet and model RP6083 is for a 600 series faucet. We do have an escutcheon plate that will fit your 1600 series faucet with model RP7577, but it only available in Chrome finish. Thanks. Jody
Answered by: Delta1
Date published: 2014-12-29

Where can I find a new set of springs for the rubber seats?

The new cartridge comes with new rubber seats, but no springs.
Asked by: Zeb
Hi Zeb, Thank you for your question. The spring is available as a single piece as RP3427. You get 2 seats and 2 springs in RP4993. Most hardware stores or home centers should stock the RP4993 but would have to order the RP3427. Thanks, Dave
Answered by: DeltaFaucet2
Date published: 2016-06-13

Where exactly do the rubber seats and springs get inserted? Thanks

Asked by: Henry
Hi Henry, Thank you for your question. The seats and srings will be located behind the RP1991 stem unit in the valve body itself. The spring's wider end goes in the hole first and the opposite tapered end of the spring is then covered by the rubber seat. Thanks, Dave
Answered by: DeltaFaucet2
Date published: 2016-05-16

is the RP1991 a replacement for the Peerless RP70538?

Asked by: Mike
Thank you for your question. Delta Faucet model # RP1991 is used on the 1600 series tub/shower faucets and is not a replacement for the Peerless Faucet model RP70538.
Answered by: Delta1
Date published: 2014-05-12
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