Kingslinger Soft Wash System

Kingslinger Air Diaphragm System-RSKSAD

$995.00 for 5GPM pump without compressor, hose, or hose reel option. 

$1095.00 for 10GPM pump without compressor, hose, or hose reel option. 

Hose and hose reel options can be chosen below. You can buy your own compressor and SAVE $$$, or select Compressor Option below, and we will handle compressor shipment for you. 



Kingslinger Soft Wash System 

See video below about how to install the mixing station on your compressor….VERY EASY!

The one and only Kingslinger Soft Wash System Air Diaphragm includes a Flo-Jet air diaphragm pump (you choose 5GPM or 10GPM); the GF Valve Mixing Station for metering your bleach, water, and soap; and the Tsunami Air Water Separator. All you have to supply are your plumbing kits from the mixing valves to your tanks and hose reel and bulkhead fittings for the tanks. Or you can choose the Plumbing Package that comes with all the fittings and hose you need. You can easily mount the pump station to the compressor following our video directions below.

Please specify in your order if you will use 1/2″ or 3/4″ hose from the mixing station to your tanks so that we can send the right size cam lock fittings. Bulkhead fittings are also available to purchase as an option.

Optional 4 GPM portable pontoon air compressor:

  • 5 HP Honda Industrial OHC/OHV premium residential gas engine
  • 155 PSI Max Pressure
  • Maximum Pressure:  CFM at 90 PSI: 5.0;   CFM at 40 PSI:6.9;
  • Comes with a Quart of Engine Oil that you must put in prior to using.
  • Dimensions L x W x H (in) 24-1/2″ x 21-1/2″ x 20″
  • We suggest you purchase the Compressor yourself directly from Northern Tool. You can save between $100-$150. If you would like us to facilitate the compressor purchase for you, we are happy to do that.  Any warranty or repair issues will have to be handled between you and Northern Tool.
  • Here is the Link to the Compressor we recommend.

Be sure to rinse the pump out thoroughly after each use. Pumps are not warrantied due to bleach use, but if you care for them properly and maintain them, they should last awhile. Compressor should not be run over 90-100PSI.  If you see only one screw connecting the pumps, don’t worry, this is how they are built. One on the top, one on the bottom.

The Kingslinger Soft Wash System is a great space-saver for truck and trailer rigs.  See video below about how to install the mixing station on your compressor….VERY EASY!

Mixing Valve Settings

We only sell the GF valves and no longer sell the Pentair Valves due to them cracking easily and other quality control issues.  The GF valves are much better and last way longer. When the water dial is full open and the bleach dial full open, you are using a 50/50 mix. Always use the Valves with the water full open. In fact my water valve never even get’s shut off. You want to get full flow of water at all times. The only time you adjust the water down, is if you need a stronger mix than 50/50.

To adjust my bleach %, I always go by bleach valve and water valve full open gives you a 50/50 mix. While this may not be exact on the number % you are getting, it is a guide that I follow.  Adjust your bleach valve 1/4 turn and you’ll slowly decrease your mix by about 10% mix. Adjust as needed to get a stronger or lighter mix.

You really have to play around with the settings to get them to the desired mix you like for various surfaces that you will clean. Porous, really dirty surfaces like roofs, stucco, brick, etc will require a stronger mix, like 30%-50%, while smooth surfaces like vinyl, hardie, metal, etc., will require lighter mixes, like 10%-20%.  Again, you just have to play around with it as you use it to figure out what settings work for you. The type of surface you are cleaning and the degree of staining will determine the mix percentage you will use. Green Algae comes off easy and requires a lower percentage. Black mildew stains require stronger percentage.  

For the surfactant setting, the smaller diameter hose you use, the better. I’ve never needed to put my soap dial on more than 2. Using too much soap can cause longer rinsing time. It can also cause longer cleaning times. I suggest you use 1/4″ or 3/8″ hose for your surfactant tank. Presently I do not use the surfactant valve on my Kingslinger.  I add my surfactant to my bleach. My surfactant valve is capped off and is ready to use as a spare should one of the metering or check valves fail. It is also available to use to apply some other type of chemical like a degreaser or a liquid plant food if needed. We use it mostly for applying our RAP to gutters for gutter brightening or to surfaces for removing and restoring Oxidation.  We also have it plumbed to a separate tank, other than our main bleach tank, in case we need to carry more than 70 gallons of bleach for larger jobs.   Lot of versatility and flexibility with this system

Using King’s Kling or Dougie Fresh surfactant: Whether you are mixing it directly into your bleach tank or using a surfactant tank and running through the mixing station, for Kings Kling mix at 1 ounce per gallon of bleach or water.  Kings Kling is a basic low priced HE Laundry Soap with a fresh scent.  If your looking for a great low price soap this is it.

Dougie Fresh, does not have a scent, but is an engineered surfactant, and is what I use.  It’s the best surfactant I have used and works great on windows.  It’s more expensive because there is no water added to it, so you can mix it 1-2 ounces per 5 gallons of water, mix well, then add a cup or two to your mix. Adjust either accordingly to your liking.  

Be sure to check out Doug Rucker’s online pressure washing school

More Pressure Washing and Soft Washing Equipment options.


Additional information

Input Size

1/2", 3/4"

Pump Size


Downgrade to Pentair Valves

Yes, No

Add Compressor

Yes, No

Add Hose

Yes, add 200 ft. x 1/2" Hurricane Hose, No Hose

Add Hose Reel

Yes, add 12" Kings Aluminum Hose Reel, Yes, add 18" Kings Aluminum Hose Reel, No Hose Reel


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