MJJC Foam Cannon S V3.0 for K Brand/Bxxch/Apacxx/ (1/4″) Quick Connector Snow Wash

What it does

MJJC S V3.0 is a pressure-washer foam cannon for applying a suitable foaming car-wash shampoo. It combines smooth spray-direction adjustment with a quick-attach bottle system, making filling and handling convenient during your wash routine.

Suitable for vehicle washing with a compatible cold-water pressure washer, the correct connection and a shampoo intended for foam-cannon use. Select the package to suit the equipment you already own.

Key benefits

• Flexible spray direction: smooth 360° adjustment helps position the foam pattern around the vehicle.
• Convenient refilling: the quick-attach bottle and cap make attaching the bottle straightforward.
• Solution pickup: the redesigned pickup tube helps draw liquid from the bottle.
• Stable handling: the bottle base is designed to reduce tipping when set down.

What is included

• Cannon: 1 MJJC S V3.0 foam cannon with bottle and your selected cannon connector. No trigger gun is included.
• Adapter Only: 1 selected foam-cannon adapter. No foam cannon, bottle or trigger gun is included.
• Cannon + Gun Set: 1 MJJC S V3.0 foam cannon with bottle and 1 MJJC short trigger gun, with your selected hose-inlet connection. The cannon connects to the supplied gun through a 1/4-inch quick connection.
• Pressure washer, hose and shampoo are not included.

Essential specifications

• Washer type: compatible cold-water pressure washer.
• Metal components: brass.
• Spray controls: 360° spray-direction adjustment and top foam-adjustment knob.
• Standard fitted orifice: 1.25 mm.
• Bottle system: quick-attach bottle and cap, with a redesigned pickup tube.

Choose the correct connection

Cannon and Adapter Only choices: K-Series, AQT/Aquatak, Apacxx-type or 1/4-inch quick connection. Match this connection to the attachment outlet on your existing pressure-washer gun.

Cannon + Gun Set choices: K-Series hose connection, 3/8-inch quick connection, 8 mm, 9 mm, M22 x 1.5 mm with 14 mm inner bore, or M22 x 1.5 mm with 15 mm inner bore. Match this connection to the hose end that attaches to the supplied gun.

The 8 mm and 9 mm choices refer to the hose-end connector, not the outside diameter of the hose. M22-14 mm and M22-15 mm have different inner bores. The gun’s 1/4-inch outlet is a different connection from its hose inlet.

Check the exact washer model, connector shape and size. A brand name alone does not confirm compatibility. If unsure, send us your washer model and a clear photo of the gun outlet or hose end before ordering.

For Adapter Only, match both the washer-side fitting and the foam-cannon connection. Different colours of the same compatible adapter perform the same connection function; colour is not a performance upgrade.

Adjusting the foam

Rotate the spray direction to position the foam pattern for the area you are washing. The 360° adjustment describes rotation of the pattern, not a 360° spray cone.

Use the top knob to adjust foam output. Start with the shampoo maker’s recommended foam-cannon dilution and adjust gradually. Foam appearance depends on the shampoo, dilution, washer and orifice, so a thicker-looking foam is not a universal measure of cleaning performance.

Orifice selection

The internal orifice is a separate component from the external hose or gun connector. Its size must suit the pressure-washer setup; a smaller orifice is not an automatic upgrade. If you need a different size, ask for guidance with your exact washer model and operating specifications before changing it.

Use the equipment limits stated for every component in your system. A connection that fits physically does not establish pressure compatibility.

Directions for use

1. Switch off the pressure washer and release trapped pressure as directed in its manual before fitting the cannon or changing connections.
2. Prepare the shampoo solution in the bottle using the shampoo maker’s foam-cannon dilution. Secure the bottle, attach the correct connector and check that all connections are locked.
3. Start the washer according to its instructions. Test the output away from people and the vehicle, then adjust the foam control for suitable coverage.
4. Test a small, inconspicuous area first using a suitable pressure, spray pattern and distance. Apply according to the shampoo instructions and do not allow the solution to dry on the surface.
5. Stop and depressurise before changing to a suitable rinsing attachment. Rinse and continue the wash process as directed by the shampoo and pressure-washer manufacturers.
6. After use, run clean water through the cannon for 30 seconds to flush shampoo residue, then rinse the bottle and shut down the washer as directed.

Precautions and care

• Use with cold-water pressure washers only. Do not connect to a hot-water machine.
• Never direct the spray at people, animals or electrical equipment. Wear suitable eye protection and keep children away.
• Do not exceed the rating of the lowest-rated gun, hose, connector or attachment. Never disconnect a pressurised fitting.
• Check seals, connections and the bottle for damage or leaks before use. Stop if the connection does not secure correctly.
• Follow the shampoo’s surface, dilution and dwell-time instructions. Keep a suitable distance from paint, trim, seals and delicate components.
• Rinse after every use. If the foam output changes, check the dilution, water supply and cannon condition before changing orifice size.