Frequently Asked Questions

Water Temperature

How can I make sure my shower is safe?

To make sure your shower is safe, follow these tips:

  1. Install a pressure balance tub and shower valve, such as those found in the broad selection of the Delta® Monitor® series.
  2. Set the valve's adjustable rotational limit stop to prevent the temperature handle from being turned to dangerously hot levels. For information on how to set the Adjustable Rotational Limit Stop, watch this how-to video.
  3. Carefully test the tub/shower water with your hand before bathing.

How do I set the adjustable rotational limit stop?

Watch this how to video or follow these steps:

  1. Let the water run until both hot and cold water is fully mixed.

  2. Rotate the handle fully counterclockwise to the hottest position.

  3. Place a thermometer in a plastic tumbler, and hold the tumbler in the water stream.

    cup temp set stop

  4. If the water temperature is above what is allowed by your local plumbing code (110º F or 120º F), remove the handle on 1300/1400 series or temperature knob on 1700/1800 series, and rotate the rotational limit stop:

    1. Counterclockwise if you have a Monitor® 1300 or 1400 series model (handle controls the temperature only, not the volume). For every tooth the rotational limit stop is rotated counterclockwise, the maximum water temperature will decrease approximately 6º F. NOTE: If water temperature is too cool, rotate the limit stop clockwise.


      counterclockwise temp set stop

       

    2. Clockwise if you have a Monitor 1700 or 1800 series model (handle controls volume; temperature knob controls temperature). For every tooth the rotational limit stop is rotated clockwise, the water temperature will decrease approximately 2º F. NOTE: If water temperature is too cool, rotate the limit stop counterclockwise.

    clockwise stop temp set

  5. For 1300/1400 series: Replace the handle. After verifying the water outlet temperature, secure the handle with the screw. Do not over tighten. For 1700/1800 series: After verifying water outlet temperature, snap temperature knob into place.

  6. MAKE SURE COLD WATER FLOWS FROM THE VALVE FIRST. MAKE SURE WATER (AT THE HOTTEST FLOW) DOES NOT EXCEED THE TEMPERATURE ALLOWED (see steps 1-4 above).

Note: Consumer safety is our number one concern. If you do not have experience with plumbing repairs, we recommend that you contact a licensed plumber for tub/shower repairs.

The water in the shower is either hot or cold; I can't get any temperature in-between. What's wrong?

 

The spool and sleeve, the part of the Monitor pressure balance valve that blends the hot and cold water, may not be working properly. This is often caused by mineral deposits that build up over time. To solve, follow the steps below based on your model.


Tools you may need:


temp set stop hot cold tools

 

  1. Shut off water supply.


    temp hot cold set stop

     

  2. There are two types of valves. Choose a or b below depending on your series

    1. 1300/1400 Series: Remove handle.

    2. 1700/1800 Series: Remove temperature knob, cover and handle.

  3. Twist and pull sleeve to remove it.

  4. Unscrew brass bonnet nut.

  5. Remove cartridge.

  6. Soak cartridge in a 50/50 vinegar and water solution for 24 hours to remove any mineral deposits.

 

NOTE: Unless both hot and cold water supplies are turned on, the pressure balance valve will allow only a dribble of water to flow through the valve.

What is the adjustable rotational limit stop?

The adjustable rotational limit stop found on Delta® Monitor® valves, allows you to set a maximum hot water temperature that flows out of the tub/shower. When set correctly, this safety feature ensures that the handle in your tub/shower faucet never goes beyond the set level, resulting in a safe bathing temperature.

It may need to be readjusted if the inlet water temperatures change. For example, during the winter, the cold water temperature is colder than it is during the summer, which could result in varying outlet temperatures. Typical temperatures for a comfortable bath or shower range from 90º F to 110º F.

How do I set the adjustable limit stop? Watch this how to video or follow these steps:

Follow these steps:

  1. Let the water run until both hot and cold water is fully mixed.

  2. Rotate the handle fully counterclockwise to the hottest position.

  3. Place a thermometer in a plastic tumbler, and hold the tumbler in the water stream.

    cup temp set stop

  4. If the water temperature is above what is allowed by your local plumbing code (110º F or 120º F), remove the handle on 1300/1400 series or temperature knob on 1700/1800 series, and rotate the rotational limit stop:

    1. Counterclockwise if you have a Monitor® 1300 or 1400 series model (handle controls the temperature only, not the volume). For every tooth the rotational limit stop is rotated counterclockwise, the maximum water temperature will decrease approximately 6º F. NOTE: If water temperature is too cool, rotate the limit stop clockwise.


      counterclockwise temp set stop

    2. Clockwise if you have a Monitor 1700 or 1800 series model (handle controls volume; temperature knob controls temperature). For every tooth the rotational limit stop is rotated clockwise, the water temperature will decrease approximately 2º F. NOTE: If water temperature is too cool, rotate the limit stop counterclockwise.

    clockwise stop temp set

  5. For 1300/1400 series: Replace the handle. After verifying the water outlet temperature, secure the handle with the screw. Do not over tighten. For 1700/1800 series: After verifying water outlet temperature, snap temperature knob into place.

  6. MAKE SURE COLD WATER FLOWS FROM THE VALVE FIRST. MAKE SURE WATER (AT THE HOTTEST FLOW) DOES NOT EXCEED THE TEMPERATURE ALLOWED (see steps 1-4 above).

Note: Consumer safety is our number one concern. If you do not have experience with plumbing repairs, we recommend that you contact a licensed plumber for tub/shower repairs.

What is wrong in a Monitor valve if the hot water comes on first when rotating the handle counter-clockwise?

When operating a Monitor valve, the cold water should always come on first and rotating the handle counter-clockwise should then increase temperature. If this is not the case, the water lines may have been connected in reverse. This can be corrected by "flipping" the pressure balancing cartridge.


temp cold first


There are two types of valves. Choose A or B below depending on your series


A. 1300/1400 Series (RP19804)

Here are the steps to follow in reversing the operation of your faucet.

  1. Before you begin, make sure that you shut off the water supply to the faucet.

  2. Remove the handle. A clear knobs will have a Phillips head screw located just under the plastic cap; a lever handle usually has a small set screw located on the side.

  3. Slide off the finished metal (chrome, polished brass, white or almond) sleeve that covers the valve.

  4. Unscrew the bonnet nut. The bonnet nut is a large brass ring and should unscrew by hand. If it is too tight, wrap a towel around the bonnet and use a pair of channel locks. Make sure that the entire valve body does not start to rotate as you do this. Remove the bonnet nut.

  5. Do not pry the valve cartridge out of the body with a screwdriver. Place the handle on the cartridge stem and rotate it counterclockwise approximately 1/4 turn after the stop has been contacted. Remove the handle. Grasp the brass stem in the center of the white plastic assembly and pull it directly out, away from the wall. The valve cartridge should slide out of the body.

  6. Reinstall the cartridge after rotating the entire unit 180 degrees. Make sure that the raised plastic stop, marked HOT, is on the right side of the valve.

  7. Reattach the bonnet nut, trim sleeve, and handle.

 

B. 1700/1800 Series (RP32104 or RP32106)

Here are the steps to follow in reversing the operation of your faucet.

  1. Before you begin, make sure that you shut off the water supply to the faucet.

  2. Make sure the water supplies are turned off.

  3. Remove the sleeve, bonnet and cartridge. Pull the cap from the cartridge and rotate it 180 degrees or one half turn. Reinstall the cap on the cartridge.

  4. Reinstall the cartridge making sure that the key is fully engaged with the slot in the brass body. Be sure the HOT SIDE marking on the cartridge is facing toward the right.

  5. Install the bonnet and sleeve making sure the O-Ring is behind the groove on the brass valve body.

  6. Install the volume control handle with the lever to the right, then turn the handle to the ON position. Install the temperature control knob and rotate it to the left. The water should be hotter the further you rotate it to the left.

When or why does the rotational limit stop need to be readjusted?

The adjustable rotational limit stop found on Delta® Monitor® valves, allows you to set a maximum hot water temperature that flows out of the tub/shower. When set correctly, this safety feature ensures that the handle in your tub/shower faucet never goes beyond the set level, resulting in a safe bathing temperature

It may need to be readjusted if the inlet water temperatures change. For example, during the winter, the cold water temperature is colder than it is during the summer, which could result in varying outlet temperatures. Typical temperatures for a comfortable bath or shower range from 90º F to 110º F.

See information on setting the adjustable limit stop.

Watch this how to video for instructions on setting the adjustable limit stop.

Why can't I get enough hot water out of my shower, tub or tub/shower valve?

If hot water supply or temperature is not a problem elsewhere in your house, then it is likely that you have a Delta® Monitor® pressure balance valve. This valve contains an adjustable Rotational Limit Stop, a small plastic device designed to reduce the risk of scalding. You may adjust the temperature yourself by carefully following the instructions below for adjusting the Rotational Limit Stop.

You may adjust the temperature yourself by carefully following the instructions below or in this [how to video] for adjusting the Rotational Limit Stop.

  1. Let the water run until both hot and cold water is fully mixed.

  2. Rotate the handle fully counterclockwise to the hottest position.

  3. Place a thermometer in a plastic tumbler, and hold the tumbler in the water stream.

    temp no water trouble shoot

  4. If the water temperature is above what is allowed by your local plumbing code (110º F or 120º F), remove the handle on 1300/1400 series or temperature knob on 1700/1800 series, and rotate the rotational limit stop:

    1. Counterclockwise if you have a Monitor® 1300 or 1400 series model (handle controls the temperature only, not the volume). For every tooth the rotational limit stop is rotated counterclockwise, the maximum water temperature will decrease approximately 6º F. NOTE: If water temperature is too cool, rotate the limit stop clockwise.


      temp no water clockwise

       

    2. Clockwise if you have a Monitor 1700 or 1800 series model (handle controls volume; temperature knob controls temperature). For every tooth the rotational limit stop is rotated clockwise, the water temperature will decrease approximately 2º F. NOTE: If water temperature is too cool, rotate the limit stop counterclockwise.

    temp no water counterclockwise

  5. For 1300/1400 series: Replace the handle. After verifying the water outlet temperature, secure the handle with the screw. Do not over tighten. For 1700/1800 series: After verifying water outlet temperature, snap temperature knob into place.

  6. MAKE SURE COLD WATER FLOWS FROM THE VALVE FIRST. MAKE SURE WATER (AT THE HOTTEST FLOW) DOES NOT EXCEED THE TEMPERATURE ALLOWED (see steps 1-4 above).

 

Important points to remember:

  • See illustrations to reduce outlet temperature.

  • Make sure cold water flows from the valve first and does not exceed 120 degrees Fahrenheit at the hottest flow.

  • According to industry standards, the maximum allowable temperature of water exiting the valve should not exceed 120 degrees Fahrenheit. (Temperature may vary in your area.)

  • After adjusting water temperature, place a thermometer in a plastic tumbler and hold the tumbler in the water stream to test the temperature. Do not test with hands or any body part.

  • If your water supply or temperature is unacceptable throughout your house, you probably need to adjust the temperature on your water heater. We recommend you follow the instructions of your water heater manufacturer. Typically, water heaters should be set in the "moderate" range, especially if you have small children.


If you have any questions or require further assistance, please contact Customer Service at 1-800-345-DELTA (3358). A representative will be glad to walk you through these steps over the telephone.


Note: Consumer safety is our number one concern. If you do not have experience with plumbing repairs, we recommend that you contact a licensed plumber for tub/shower repairs.

Customer Q & A

(51 Questions : 57 Answers)

Product Q&A

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The flow rate slows to a trickle when I turn to 100% hot water. The hot water temperature is fine, it is the flow rate which is not. I am on city water. I investigated. turned off the integral hot and cold water stops and I removed the cartridge; it looks brand new. I then turned on the hot first and then the cold integral stop (one at a time), the water flow is equal on both sides (it hit the other shower wall like a firehose for both hot and cold trials). Did I get a bad cartridge? Or is there some other reason for the water flow rate to slow to a trickle when 100% hot chosen?
Topics: Performance
5 days ago
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Mark R
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Answer: 
Hi Mark, Thank you for your question. We recommend verifying that the temperature limit stop was adjusted properly. Step 4 on page 7 of the linked manual will cover this process.
http://www.deltafaucet.com/customer...
We also have a How to adjust the rotational limit stop video. The thermostatic cartridge is covered at the 2:48 minute mark.
http://www.deltafaucet.com/tools-re...
Thanks,
Dave
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3 days ago
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need repair manual for older version of Model #470

need to disassemble an older version of Model $470
Topics: Care/Maintenance
Skill Level: Advanced
2 weeks, 2 days ago
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curt
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Answer: 
Hi Curt, Thank you for your question. Here is a link to our website that will take you to the model 470. You can access the parts diagram, manual, and spec sheet for the original 470.
http://www.deltafaucet.com/customer...
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Dave
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2 weeks, 1 day ago
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Shower water now only luke warm

Based on the YouTube video on adjusting the RLS, I have a Delta 17 series faucet (I think). I adjusted the RLS with no change in the water temp. It previously got very hot but after having a water softener installed (VERY nasty water) about 3 months ago, it now gets warm but not hot despite being set on the hottest temp. (Water at every other spigot is fine.)

I tried turning off the shut off for each the hot and cold but with only one open, the water only came out in a trickle.

Any other ideas on how to get a hot shower?
Topics: Performance
Age: 45 to 54
Gender: Male
Project Type: New
Ownership: 2-5 years
Skill Level: Beginner
2 weeks, 6 days ago
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Bee Swiss
Marengo, OH 43334, USA
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Answer: 
Hi Bee Swiss, Thank you for your question. It souds like some debris may have gotten into the cartridge or hot water line leading to the faucet that is restricting the hot water flow. We recommend removing and cleaning the cartridge and flushing the faucet with the cartridge removed. The faucet has to have the hot and cold water on or else the pressure balance function of the faucet will not allow full flow.
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Dave
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2 weeks, 3 days ago
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R10000-UNWSHF

Would there be an advantage to using a rough in valve with stops when using a 17T cartridge?
Is it OK to use a high flow rough in valve with a 17T cartridge?
Topics: Purchase
Skill Level: Advanced
2 weeks, 6 days ago
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Paul
New Hampshire, USA
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Answer: 
Hi Paul, Thank you for your question. The advantage of the rough with stops is that you can shut off the water at the faucet durings repairs without shutting water off to the rest of the house.
You can use the 17T thermostatic cartridge in the high flow rough.
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Dave
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2 weeks, 6 days ago
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Why do I not get hot water out of nyla faucet?

I have a Nyla single hole faucet with riser in bathroom over a vessel bowl. Bought new and installed it in June 2013. Worked fine until last four months. Over that time the hot water pressure has grown less and less until I no longer get any hot water out of the faucet (as of today March 1, 2015, about a year and nine months into use.) I have very good pressure using cold water.

I have not yet disassembled to check the line for clog or debris. I'm guessing that should be my first step, but wondering if you have received other complaints about this problem. Thanks for any and all.
Topics: Warranty, Performance
Age: 45 to 54
Project Type: Replacement
Ownership: 2-5 years
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3 weeks, 4 days ago
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Jeffer
Fort Wayne, IN, USA
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Answer: 
Hi Jeffer, Thank you for your question. Checking for debris on the cartridge and flow restrictor, and flushing the supply lines should help restore the hot water flow. Here is a link to the manual for the model 17708LF that includes the parts diagram to help with the repair.
http://www.deltafaucet.com/customer...
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Dave
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3 weeks, 3 days ago
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I have adjusted the stop mechanism inside of the handle to the maximum but at a loww volumn the water is still cool. as soon as the volumn is turned up, it gets warmer. Is there some other way to increacse the hot/cold water mix at a low volumn of water?
Age: 65 or over
Gender: Male
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Ownership: < 1 year
Skill Level: Intermediate
1 month ago
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Bob
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Answer: 
Hi Bob, We are sorry that you are experiencing a problem with your T17230 faucet. Unfortunately as the flowrate from the valve drops down to approximately 1 gallon per minute or less the temperature will fluctuate. You may want to consider installing a shower arm volume control like our U4760-PK that will allow you to reduce the water flow and not affect the water temperature.
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Dave
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1 month ago
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Topics: Assembly
Age: 55 to 64
Gender: Male
Project Type: New
Skill Level: Intermediate
1 month, 1 week ago
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Bill
cedar grove,nj
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Answer: 
Hi Bill, The Cassidy Floor Mount tub filler will come with a high flow cartridge that does not have a temperature limit stop. You can order a RP46074 cartridge that does have the rotational limit stop that will work with the tub filler.
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Dave
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1 month ago
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Why does water temperature change?

I have a Delta Monitor 1700 series faucet. The temperature does not stay constant throughout a shower. The longer the shower stays on the colder it gets. Adjusting the temperature helps to a point but eventually it is almost all hot. The hot water heater is brand new.
Topics: Care/Maintenance
Age: 25 to 34
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1 month, 1 week ago
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Matt
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Answer: 
Hi Matt, Thank you for your question. There are a couple of factors that lead to the water cooling over the length of the shower. As hot water is drawn from the water heater tank to the shower cold water is being introduced into the water heater to replace the water being used. Also the cold water already in the pipes is going to be warmer at the beginning of the shower than the cold water later drawn from outside the house. These factors along with the your body getting used to the existing water temperature may be what you are experiencing.
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Dave
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1 month, 1 week ago
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Valve compatibility 1700 to 17 series?

We have a moniter 1700 series tub/shower faucet assembly. If we switch to a newer 17 series model are we able to use the same valve assembly ( or whatever you call the part that hooks into the water supply) or does that series use a different type.
Age: 35 to 44
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Project Type: Replacement
Ownership: 6-10 years
1 month, 1 week ago
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Missy
Minnesota
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Answer: 
Hi Missy, Thank you for your question. You can use a new Monitor 17 series trim on your existing 1700 series rough in valve. The new trim will ship with a new cartridge. This cartridge will not work with the 1700 series rough in valve. You will have to continue to use the existing cartridge or replace it with a new RP32104 cartridge.
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Dave
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Is there an instruction video for replacing an RP1991 cartridge?

If not, are there written instructions?
Topics: Care/Maintenance
1 month, 2 weeks ago
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Mimi
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Answer: 
Hi Mimi, Thank you for your question. I have attached the instructions for replacing the RP1991 below. You will need to shut off the water supply to the faucet, remove the handle and bonnet to access the RP1991.
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Dave
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