X-Jet Kits and Chemical Injection Nozzles

Your pump was never built to taste bleach. An X-Jet kit draws chemical from a bucket and mixes it at the nozzle, downstream of everything expensive, so full-strength soft wash mix reaches the wall without ever touching your pump, hose, or unloader. We keep M5 kits, proportioner tips, and replacement orifices on the shelf in Gaithersburg. Call 301-519-9274 with your machine's GPM and we will set you up with the right kit the first time.

How an X-Jet Works and Why Soft Wash Crews Carry One

The X-Jet is a venturi nozzle. High pressure water rushing through the orifice creates suction that pulls chemical up a 15 foot hose from your bucket, blends it into the stream, and throws the mix 30 to 40 feet depending on your flow. Because the draw happens at the gun end, you can switch from chemical to rinse by dropping the pickup hose in clean water, and you can run mixes far hotter than a downstream injector allows. House siding, second-story gables, and gutter lines all come into range with your feet still on the ground.

Original vs M5 vs DS Twist

The Original X-Jet uses fixed pattern sleeves and throws the tightest stream, worth roughly 3 to 5 extra feet of height over the M5. The M5 trades a little reach for a twist collar that adjusts the fan from a near pin stream to about 60 degrees without leaving the ladder-free comfort of the lawn. The DS Twist models are built as dedicated downstream soapers with the same twist adjustment, sized by flow range instead of orifice number. If you do mostly house washes, the M5 is the one we hand across the counter.

Kit and Part Lookup

Get the Orifice Number Right

An X-Jet only draws correctly when the orifice matches your machine's flow. The common breakpoints run #7 for machines under 3 GPM, #9 for 3 to 3.5, #13 for 4 to 4.5, #16 for 5 to 6.5, #20 for 7 to 8, and #25 above that. Too big an orifice and pressure drops with weak draw. Too small and you choke the machine. The #9 kit and #16 kit cover the two most common contractor machine sizes.

Proportioners Set Your Strength

The color-coded proportioner tips press into the hose barb and meter how much chemical the venturi can pull, which sets your dilution before the water ever leaves the gun. Stronger mix for a north-facing algae wall, weaker mix for painted trim, all by swapping a two dollar tip. Trust the chart as a starting point, then confirm with a bucket draw test on site, because hose length and lift height shift the real ratio.

From the Field

We sell far more replacement orifices and proportioner tips than complete kits, and that tells you two things. First, X-Jet bodies last for years when you rinse the unit with clean water at the end of every job. Dried hypochlorite crystals are what eat orifices and stick twist collars. Second, tips walk off. They are small, they ride loose in cup holders, and the one you need is always the one missing. Buy the 15 piece kit, keep it zipped in the truck, and replace singles for two bucks as they vanish. When draw gets weak on an older unit, swap the orifice before you blame the machine. It is a $24.99 fix nine times out of ten.

Related Soft Wash Gear

• All X-Jets and M5 X-Jets
• Soft wash equipment
• Downstream chemical injectors
• House washing chemicals and roof cleaning chemicals
• SharpShooter nozzles and holders for downstream reach
• Soap and foam tips and foam cannons
• Chemical hoses
• Try before you buy at our Gaithersburg pressure washer store

Frequently Asked Questions

What is the difference between an X-Jet and a downstream injector?

A downstream injector installs at the machine and sends diluted chemical through your whole hose, which limits strength and rinse speed. An X-Jet draws at the nozzle from a bucket you carry, so the mix is stronger, the switch to rinse is instant, and nothing corrosive travels through your hose or fittings.

Should I buy the Original X-Jet or the M5?

Buy the M5 if you want one tool for most soft wash work, since the twist collar adjusts the pattern on the fly. Buy the Original if maximum vertical reach matters, because its fixed stream carries about 3 to 5 feet higher on the same machine.

What orifice size do I need?

Match it to flow: #7 under 3 GPM, #9 for 3 to 3.5, #13 for 4 to 4.5, #16 for 5 to 6.5, #20 for 7 to 8, and #25 for bigger rigs. Wrong orifice is the number one cause of weak draw and sad spray patterns.

How high will an X-Jet spray?

Plan on 30 to 40 feet of throw on typical 4 to 8 GPM contractor machines, which puts most second-story work and many third-story peaks in reach from the ground. More GPM and a tighter pattern buy more height. Wind takes it away.

How do the color-coded proportioner tips work?

Each color has a different hole size that limits how much chemical the venturi pulls, changing your dilution ratio. Seat the tip in the hose barb before attaching the pickup hose. Verify the real ratio with a timed bucket test since lift and hose length affect draw.

Why did my X-Jet stop pulling chemical?

Check the simple stuff in order: clogged pickup filter, cracked pickup hose sucking air, dried chemical in the proportioner tip, then a worn orifice. Rinsing with fresh water after every job prevents nearly all of it.

Can I use an X-Jet with roof wash strength mix?

You can draw strong hypochlorite mixes, and that is a core use. Watch overspray on plants and metal, wet down landscaping first, and rinse the unit well afterward. For dedicated roof work at very low pressure, look at our soft wash systems too.