Frequently Asked Questions


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What's so special about Dishmaster?

Why Dishmaster? It really is "More than a Kitchen Faucet". It is a hand-held dishwasher. By the time most people scrape, rinse and load their automatic dishwasher, they could have already finished with a Dishmaster. The convenient wand delivers hot, soapy water at the touch of a button then simply release the button for a clear water rinse. Scrape, wash, rinse, done in one easy motion. See how a Dishmaster works.

All your dishes and cookware clean easily with a Dishmaster. Save energy, detergent and water by using only just what you need to get the job done. Great as a pre-rinse for the dishwasher. Safe for china and crystal. Perfect for electric cookware, pots & pans, skillets and coffee pots.


What detergent should I use in my Dishmaster?
  • USE DETERGENT, NOT SOAP. Soaps are made from natural ingredients, which you think sounds great and usually we agree. But...soap is basically fats and oils mixed with a base and it's going to clog the system. If you choose the soap path, you should expect to back flush the system more often.
  • DO NOT USE DETERGENTS WITH LOTION ADDITIVES. Just like soaps, lotion will clog the system and create work for you with increased back flushing.
    • Choose a detergent that is transparent; avoid anything cloudy or opaque.
    • Avoid detergents that advertise "lotion", "makes hands soft", or similar wording.
  • DO NOT USE DETERGENTS THAT CONTAIN CITRUS ADDITIVES (CITRIC ACID). The acid will deteriorate the copper tubing in your hose assembly and you will have to replace it.
  • LIQUID ONLY! DO NOT USE POWDERED DETERGENT OR POWDERED SOAP.
  • START WITH THE RECOMMENDED MIXING RATIO OF: 1 tablespoon of detergent per 16 ounces of water. Your water conditions and experience will determine if you want to increase or decrease the amount of detergent.

How much detergent should I add to the tank?
  • START WITH THE RECOMMENDED MIXING RATIO OF: 1 tablespoon of detergent per 16 ounces of water. Your water conditions and experience will determine if you want to increase or decrease the amount of detergent.
    • For faucets that have the detergent tank in the faucet body, begin by using one tablespoon of detergent per tank of water.
    • For faucets with a 72-oz reservoir beneath the sink, start with four tablespoons of detergent per tank of water.
  • Your water conditions and experience will determine if you want to increase or decrease the amount of detergent. Use of thicker solutions will require that you back flush more often.

Why does water run from my arced spout after the valve is closed?

The water flow may not immediately stop after the lever handle is closed. This is a normal characteristic of any arced spout. After the valve is closed there is still residual water between the high point of the arc of the spout and the aerator. Gravity will pull this water from the spout. If your water pressure is high enough and/or water volume great enough it may (immediately or over time) force the air from the peak of the spout and create a vacuum. If so, the water flow will stop immediately when the lever handle is closed.

Watch this video on our M70 Sapphire Support Page to stop the flow. Thank You Jay M from Bridgeman, MI for this great tip: Arced Spout Video

www.moen.com "This is a normal characteristic of any faucet with a high-arc spout. After the handle (or handles) are shut off, there is still water inside of the spout.  Any residual water past the arc of the spout will slowly drip out of the spout. Gravity will pull this water from the spout; however, it should stop after several minutes."

www.plbg.com/forum "It is the water in the "down side" of the faucet's "loop". Without the aerator it would drain out instantly, but the aerator restricts the air that has to enter the faucet so that water can drain, so it takes a minute or so to happen."


Can I put a water filter on the spout?

Although many users put a water filter or automatic dishwasher adapter on the spout, the spout is intended to support only the weight of an aerator. Damage to the spout or faucet resulting from any device other than an aerator is not covered under warranty.


Where can I find a schematic of my faucet?

Call it a schematic, an illustration, an assembly, a diagram, etc, we do not provide an all inclusive drawing of the faucet. Our intent and focus is to provide the necessary instructions, illustrations, videos, etc to address the repair at hand. Access these resources at your faucet's support page and/or parts page. See faucet specifications at each individual faucet page.


Can I make an adjustment to make the water flow faster?

With passage of the federal Energy Policy Act in 1992, the United States has uniform water efficiency standards for nearly all toilets, urinals, showerheads, and faucets manufactured after January 1994. This law placed strict regulations on flow rates. All manufacturers must adhere to these standards and no adjustments can be made.

In some cases, you may be receiving less than the maximum allowable water flow rate due to low water pressure or a blockage in the plumbing or in the faucet. Check for sediment, particles and lime buildup in the aerator. Click here for other possible causes and corrections


Why does a Dishmaster cost so much?

"More Than a Kitchen Faucet" is not just a slogan. A Dishmaster faucet is a hand-held dishwasher with more features than a typical kitchen faucet. Compare features! Also, Dishmaster is a 'boutique' brand. Other brands you are likely to compare to sell more faucets in a day than we do in a year.

Here are some examples of what those great prices from the 'good old days' would be in today's dollars (last updated May 2022).

  • 1950 Deluxe $49.50 - today $624.14
  • 1959 Imperial $39.50 - today $403.60

see for yourself at CPI Inflation Calculator


Why do some Dishmasters have plastic covers?

Because plastic does not rust or pit. It's the same reason your car has plastic bumpers and panels. Since 1976 we have successfully used chrome plated ABS in place of chrome plated metal. Prior to 1976, the covers were made from metal and, just like older vehicles, the cover eventually rusted/pitted. The weight of metal may feel more substantial while in your hands, but once installed, you can't tell the weight and the plastic cover functions just as well and lasts much longer.


What is the difference between Imperial Four and Imperial Four XL?

The Imperial Four can be installed on the wall or on the sink/countertop. When not in use, the wand is stored on top of the faucet. Sink or countertop installation requires two holes on 8" centers and fits all standard 3-hole and 4-hole sinks. Wall installation requires two 1/2" MIP threaded pipes on 8" centers.

Imperial Four

The Imperial Four XL can be installed on the sink/countertop only, NOT on the wall. When not in use, the wand is stored next to the faucet and the hose is out of sight beneath the countertop. Four holes are required. Fits all standard 4-hole sinks.

Imperial Four XL
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