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  • The Silencer Kit: Suttner ST-160 Foam Injector + ST-75 Foamer

    Choose Your Gallon

    The Silencer kit

    This simple, efficient and durable foaming system features the Suttner ST-160 Foaming Injector and the Suttner ST-75 Foamer. This system solves the biggest problem with all foam cannons which is the refills by injecting the chemical at the outlet of the power washer. The ST-160 utilizes dosing nozzles for automatic dilution with a range of 10:1 to 200:1, completely eliminating all guess work when it comes to the strength of your soap. We set these injectors to draw at 100:1 which is 1% of the GPM, perfect for our super concentrated soaps. This equals 4-5 times less soap than standard injectors. 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.
    This professional but affordable package is completely plug and play. To install, plug the ST-160 Injector onto the outlet of your power washer. To engage foam mode, attach your ST-75 Foamer to the gun or lance outlet. To switch back to rinse, reattach your rinse nozzle.


    1. Suttner ST-160 Single Foaming Chemical Injector
    2. Safe Flow Lid Pick Up Tube
    3. Suttner ST-75 Foamer Complete with 1/4" QC Plug
    4. Gallon of Your Choice


    The Suttner ST-160 Single Chemical Injector is the most efficient and durable foam injector available, with a dilution range from 10:1 to 200:1. Constructed completely from high quality stainless steel and no moving parts this injector was built to last.

    • 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.



    The compact ST-75 produces thick foam for an easy application with out any mixing or refilling. The quick connect plug makes swapping from the ST-75 to your rinse nozzle quick and easy.
    • Can Be Attached At Gun Or At End Of Lance. (Lance & Gun Not Included)
    • Produces Thick Foam 
    • Durable Construction 
    • Installed 1/4" Quick Connect Plug
    • Easy To Use



    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.


    How To Repair Common Issues on Suttner Foam Gear


    SUTTNER ST-160

    • 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 

    SUTTNER ST-75 Foamer

    • Pressure: 4000 PSI
    • Flow Rate: 1-6 GPM
    • Temperature: 212° F