Frequently Asked Questions

Water Pressure

Are "tankless" water heaters recommended?


Often the outgoing water pressure from a "tankless" water heater is relatively low. As a result, these devices are not generally recommended for use with pressure balanced units due to the possible differences in water pressure from the hot and cold lines. For example, if you were to have 20 PSI on the hot supply line and 50 PSI on the cold, since pressure balancing adjusts to the low pressure, your resulting operating pressure in the shower will be reduced.

Can I change my standard tub, shower or tub/shower faucet to a pressure balance faucet?

Pressure balance faucets use different valve technology than non-pressure balance units. To obtain the benefits of pressure balance, you will need to purchase a new Delta® Monitor® pressure balance faucet.

More details and a demonstration of a pressure balance valve

Can I remove water restrictors in shower heads or aerators?

Flow restrictors are usually found in the neck or threaded end of the shower head exposed when the shower head is removed from the shower arm as shown in the image below.  They would appear in the opening of the aerator when it is removed from a lavatory or kitchen faucet.

While it is possible to remove flow restrictors from shower heads, we strongly advise against it for several reasons.  Flow restrictors for faucets are an integral part of most aerators and it is generally not possible or desirable to remove them.

Our H2Okinetic showering devices are specifically designed to operate most efficiently at the flow rate controlled by the flow restrictor.  Removing the flow restrictor from an H2Okinetic showering device will result in improper operation and a very uncomfortable experience.

For water conservation purposes, most plumbing codes require faucets and showering devices to not exceed a certain maximum flow rate. Removing the flow restrictors could cause these devices to no longer meet these codes.

If you are noticing decreased water pressure or a poor quality flow rate, you may have debris in your flow restrictor or the screen filter in your shower head or aerator.  Often this is easily remedied with a simple cleaning process.


To clean the shower head, first remove it from the shower arm by turning it counterclockwise.  Aerators are removed in the same way, turning counter clockwise.


trouble shoot pressure restrictor


Examine the threaded portion of the shower head or aerator and flush or rub away any debris you find clogging the flow restrictor or filter screen.  You may want to soak it in vinegar overnight to remove any lime deposits.  Once you do this, flush it well with water, rubbing it with a toothbrush if the deposits are stubborn.

Re-install the shower head or aerator by turning clockwise.

I just moved into a newly constructed home. Why would my water pressure be low?

During the first few days you use your faucets, a small amount of debris may be flushed out of your pipe system. This happens even though the plumber flushes the pipes before completing work on your home. In addition, particles of solder, copper chips, Plumber's tape and other installation materials can get caught in aerators and shower heads. Occasionally, a chip might damage the valve seat that provides the watertight seal. The tips below will help you avoid problems. These procedures are a good idea to follow each time the water has been turned off for repairs in your home.


TO FLUSH A KITCHEN OR LAVATORY FAUCET:

  1. Remove aerator and black sealing gasket above it


    trouble shoot pressure new home kit

  2. Turn faucet handle(s) to full on hot and cold mixed position(s) and flush lines for two minutes before turning off water with handle(s)

  3. Replace aerator

TO FLUSH A TUB / SHOWER FAUCET:

  1. Remove shower head if applicable


    trouble shoot pressure hew home tub

  2. Turn handle(s) to full on hot and cold mixed position(s)

  3. Flush spout two minutes without moving handle(s)

  4. If you have a shower head, divert water to it and flush for two minutes. BE SAFE! Make sure cold water flows FIRST and that the rotational handle limit stop is properly set. See information on setting the adjustable limit stop. Also, watch this how to video for instructions on setting the adjustable limit stop.

  5. Replace shower head

Some debris and/or foreign material in the lines may be too large to pass through the faucet whether it is a kitchen, lavatory or tub/shower faucet. To remove this type of debris:

  1. Turn off water supply to both hot and cold.

  2. Remove all internal components.

  3. Turn water supplies back on and let run for 30-60 seconds. (For kitchen and lavatory faucets turn a bucket or similar large container upside down over faucet to deflect the water into the sink.)

  4. Turn water supplies off again.

  5. Reassemble faucet.

  6. Turn water supplies back on.

You can also watch this video for information on how to flush the lines of your tub/shower.

If I have large differences between hot and cold pressure in my house, what effect does that have on operating pressure of a Monitor valve?

The Delta Faucet Monitor Series is equipped with a stainless steel pressure balancing spool. This pressure balancing unit protects the user by equalizing the water pressure inside of the shower valve itself. This protects the user if there is a decrease in pressure from the hot or the cold supply. If that were to occur the faucet will automatically readjust the water pressure from the opposite side so that it is equal with the supply that dropped in pressure. Meaning that if someone is in the shower and the toilet is flushed, the valve will reduce the hot water pressure coming into the faucet to match the cold. This ensures a scald free environment and a constant temperature within + or - 3 degrees Fahrenheit.

If you always have large differences between hot/cold water pressures, then the faucet will only allow the minimum amount of pressure through. If you have a hot water supply of 25 pounds per square inch and a cold water supply of 60 pounds per square inch then the faucet will always operate at 25 pounds per square inch.

Read more on how pressure balancing works.

Why does my faucet have low water pressure?

The flow restrictors required for aerators and shower heads can clog, resulting in greatly reduced flow rates. Remove the aerator or shower head and make sure the flow restrictor is not clogged. Additionally, flushing the system properly will help to reduce the possibility and frequency of occurrences. The tips below will help you avoid problems. These procedures are a good idea to follow each time the water has been turned off for repairs in your home.

The flow restrictors required for aerators and shower heads can clog, resulting in greatly reduced flow rates. Remove the aerator or shower head and make sure the flow restrictor is not clogged. Additionally, flushing the system properly will help to reduce the possibility and frequency of occurrences. The tips below will help you avoid problems. These procedures are a good idea to follow each time the water has been turned off for repairs in your home.


TO FLUSH A KITCHEN OR LAVATORY FAUCET:

  1. Remove aerator and black sealing gasket above it


    trouble shoot pressure low faucet kit

     

  2. Turn faucet handle(s) to full on hot and cold mixed position(s) and flush lines for two minutes before turning off water with handle(s)

  3. Replace aerator

 

TO FLUSH A TUB / SHOWER FAUCET:

  1. Remove showerhead if applicable


    trouble shoot pressure low tub kit

     

  2. Turn handle(s) to full on hot and cold mixed position(s)

  3. Flush spout two minutes without moving handle(s)

  4. If you have a showerhead, divert water to it and flush for two minutes. BE SAFE! Make sure cold water flows FIRST and that the rotational handle limit stop is properly set. See information on setting the adjustable limit stop. Also, watch this how to video for instructions on setting the adjustable limit stop.

  5. Replace showerhead

 

Some debris and/or foreign material in the lines may be too large to pass through the faucet whether it is a kitchen, lavatory or tub/shower faucet. To remove this type of debris:

  1. Turn off water supply to both hot and cold.

  2. Remove all internal components.

  3. Turn water supplies back on and let run for 30-60 seconds. (For kitchen and lavatory faucets turn a bucket or similar large container upside down over faucet to deflect the water into the sink.)

  4. Turn water supplies off again.

  5. Reassemble faucet.

  6. Turn water supplies back on.

You can also watch this video for information on how to flush the lines of your tub/shower.

Why does my new faucet have reduced flow? My old faucet had plenty of volume.


Please keep in mind that all new faucets since 1994 are restricted to conserve water per EPA code mandates. Older faucets had no restrictions. Beyond intentional flow restriction, new installations can sometimes have reduced flow if the lines are not flushed prior to installation of aerators or shower heads. The flow restrictors required for aerators and shower heads can clog, resulting in greatly reduced flow rates. Remove the aerator or shower head and make sure the flow restrictor is not clogged.

Customer Q & A

(32 Questions : 33 Answers)

Product Q&A

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Topics: Care/Maintenance
Age: 65 or over
Gender: Male
Project Type: New
Ownership: 2-5 years
Skill Level: Beginner
4 days ago
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Tom
South Wellfleet, Wellfleet, MA 02667, USA
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Answer: 
Hi Tom,

Thank you for your question! The Cassidy faucet has a cache aerator that you can remove using the included wrench tool.

Thanks,
Jon
2 days ago
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Replace a pressure balanced cartridge with a tempassure cartridge?

Can I replace a Monitor 1700 Pressure Balanced cartridge with a 1700T Tempassure cartridge? It's installed in a single handle Monitor Jetted Shower XO System that was installed in 2005.
Thanks,
Mike
Topics: Performance, Assembly
2 weeks, 2 days ago
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Answer: 
Hi Mike1,

Thank you for your question! Unfortunately, the T17T TempAssure thermostatic cartridge only fits in MultiChoice R10000 valves, which started being made in 2006.

Thanks,
Jon
2 weeks ago
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Monitor 1700 flow options

Hi,

I've just moved into a 2005-built home that has a Monitor 1700 cartridge in a Monitor Jetted Shower system. I've removed the shower head, and I'm not seeing a very powerful flow of water from the shower pipe. Other faucets in the house have higher flow.

Does the Monitor 1700 cartridge restrict flow as part of its operation? If so, can this be modified and/or is a different/upgrade cartridge available with higher flow?

Thanks!
Topics: Performance
2 weeks, 5 days ago
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Answer: 
Hi Mike, Thank you for your question. The shower pipe should be able to flow at approximately 4.5 gallons per minute at your stated 52-55 psi. There may be some debris or build up in the venturi tube that is part of the rough in valve blocking the flow of water. We recommend removing the cartridge and reverse flushing the valve through the shower arm to help remove the debris.
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Dave
Skill Level: Advanced
2 weeks, 2 days ago
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Diminished water flow

I have a Delta Monitor single-handled faucet with a two-piece shower head. It worked fine until today, but suddenly the water pressure in the inner shower head, which detaches from the fixed outer ring, has diminished greatly. I am familiar with how to adjust the flow. Previously the adjustment changed the water flow from a wide pattern to a narrow stream. Now it changes it from just a few drips to a weak narrow stream. No other combinations appear possible. What should I do?
Topics: Care/Maintenance
1 month, 2 weeks ago
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Don
Vancouver BC Canada
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Answer: 
Hi Don, Thank you for your question. If only the handheld showerhead has reduced flow we recommend removing the hand shower from the hose and cleaning the debris screen. You will also want to run the faucet without the hand shower attached to flush the line.
Thanks,
Dave
Skill Level: Advanced
1 month, 2 weeks ago
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I would also like to have a handheld shower for the same tub. Do I need 2 valves? What products do you have that can do both?
Topics: Purchase
2 months, 1 week ago
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Bob
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Answer: 
Hi Bob, Thank you for your question. We do not offer a wall mounted tub/shower valve that can deliver 10-12 gpm. You may want to look at the Brizo Sensori high flow shower systems that have 3/4" inlets for this type of performance.
http://www.brizo.com/search/results...
Thanks,
Dave
Skill Level: Advanced
2 months, 1 week ago
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keep losing pressure on hot water faucet

Delta Kitchen Faucet Lewsiton 21902-SS. I keep losing water pressure for hot water. I have changed stem 3 times. I have changed faucet diverter. I have changed the "O" rings, glide ring, bonnet nut. I have cleaned the aerator. Each time I have changed the stem, the time it works keeps shrinking. The last fix lasted 3 days. The cold water works fine. Running out of Delta parts and right not have spent the equivalent of a new faucets on parts. Any idea what is causing the pressure leak?
Topics: Warranty, Care/Maintenance
Age: 55 to 64
Gender: Male
Project Type: Replacement
Ownership: 2-5 years
Skill Level: Intermediate
2 months, 3 weeks ago
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james
Pittsburgh, PA, USA
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Answer: 
Hi James, Thank you for your question. Based on your description it sounds like there is some type of debris caught in the hot water supply. We recommend flushing the faucet to remove the debris. Here is a link to our Flushing the lines of a kitchen faucet video.
http://www.deltafaucet.com/tools-re...
You will also want to check that the hot water shut off valve is clear of debris and functioning properly.
Thanks,
Dave
Skill Level: Advanced
2 months, 2 weeks ago
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what causes low flow from hot water on single handle shower faucet

5 months ago
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vince
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Answer: 
Hi Vince, Thank you for your question. Some type of debris or blockage is the most common reason for reduced water flow on a single handle shower faucet. You will want to remove the cartridge, make sure that it is free of debris or mineral build up and flush the faucet. Here is a link to our How to flush your tub/shower faucet video.
http://www.deltafaucet.com/tools-re...
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Dave
Skill Level: Advanced
5 months ago
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will water pressure of 75 psi damage a kitchen faucet rated at 60 psi

Topics: Care/Maintenance
5 months, 2 weeks ago
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Rick
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Answer: 
Hi Rick, Thank you for your question. Our faucets are designed to function with working water pressures of 20 to 100 PSI. The 60 psi rating on the spec sheets generally is referring to the max flow rating for the faucet. Your 75 PSI should not damage the faucet.
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Dave
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5 months, 2 weeks ago
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my water pressure is 96 psi incoming at the house
Topics: Warranty, Care/Maintenance
Age: 45 to 54
Project Type: New
Ownership: < 1 year
Skill Level: Beginner
5 months, 4 weeks ago
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bill
Opelika, AL, USA
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Answer: 
Hi Bill, Thank you for your question. The recommended water pressure for our faucets is from 20 to 100 psi.
Thanks,
Dave
Skill Level: Advanced
5 months, 3 weeks ago
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Is it acceptable to run pex to and from the diverter valve.

Shower only application with multichoice valve and 3/6 diverter going to 1 shower head and 1 hand held shower.
Topics: Assembly
Skill Level: Intermediate
6 months ago
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will
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Answer: 
Hi Will, Thank you for your question. You can run pex to and from the R11000 diverter valve in a shower only installation.
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Dave
Skill Level: Advanced
6 months ago
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