The Silencer - Foaming Injector + Nozzle Kit

Nozzle Size (See Chart at Bottom of Page if Unsure)

The Silencer  Foaming Kit

Our bare bones foaming system. This professional but affordable package is completely plug and play. The Suttner ST-160 Single Chemical Injector is the most efficient and durable foam injector on the market, with a dilution range from 12:1 to 200:1. The chemical gets injected back at the power washer fully eliminating foam cannons at the gun. To engage foam mode, simply switch from your rinse nozzle to the Foam Nozzle and get ready to lay it on real thick. Use 4-5 times less soap than your standard injector, in return that equals 4-5 times more money in your pocket. Not only do you get the benefit of efficiency but you also get further cling time allowing work on larger areas and less soap run off.


  • Suttner ST-75s Foaming Nozzle
  • Suttner ST-160 Foaming Chemical Injector
  • 1 Gallon of Foam - Neutral Foaming Mitt Soap


  • Plug and Play
  • Dosing nozzles offer a dilution range from 12:1 to 200:1
  • Works On Any Power Washer
  • Uses 4-5x Less Soap Than Traditional Style Injectors 
  • Super Streamlined Design For Large Fleet Washing
  • Stainless Steel Components + Universal Fitting
The Suttner ST-160 Single Chemical Injector is the most efficient and durable foam injector available, with a dilution range from 12:1 to 200:1. Constructed completely from high quality stainless steel and no moving parts this injector was built to last. MORE INFO HERE.


  • Plug + Play
  • Uses 4-5x Less Soap Than Traditional Style Injectors
  • 9 Dosing Nozzles Included
  • Durable Stainless Steel Construction

*Other downstream injectors must be removed from your machine.
*Limited to 150' of power washer hose after the injector.
*ST-160 injectors come standard with a 3/8" QC Plug on the inlet and a 3/8" QC Coupling on the outlet. QC orientation can be reversed upon request.

Creates thick foam when used with the Included ST-160 Injector. The Installed quick connect plug make swapping from foam nozzle to rinse nozzle quick and easy. 


  • Can Be Attached At Gun Or At End Of Lance
  • Produces Thick Foam 
  • Durable Construction 
  • Installed 1/4" Quick Connect Plug
  • Easy To Use
  • Safe On Wax And Ceramics.
  • Neutral pH And Body Shop Safe
  • Can Be Applied In A Wide Range Of Ratios From 25:1 To 150:1

    How to Install:

    1. Connect ST-160 injector after power washer and before your high psi hose. 
    The ST-160 will be made ready with a stainless 3/8" quick connect plug on the inlet and a stainless 3/8" quick connect socket on the the outlet.
    2. Place chemical pick up tube directly into soap
    3. Foam all of the things!

    • Injector will be set to run at 100:1 unless specified otherwise, this can be changed by simply changing metering tip inside injector barb.
    • If using a hot water machine, scale build up from your coil can plug injector or foam head. On start up always run with injector in rinse mode for about 30-60 seconds to flush out any build up.
    • If a jumper hose is needed to go from your power washer to ST-160 injector please see our selection of hoses in accessories.

    nozzle size chart


    -Must be sized according to your current nozzle size. If nozzle size is unknown, please call us with the gpm and psi of your power washer.


    • Stainless Steel Injector (9 metering/dosing nozzles included)
    • Min/Max Flow Rate: 1-6gpm
    • Min/Max PSI: 1000-4000psi
    • Rated for 194 degree water
    • Uses one chemical at a time