X-Jet M5 Chemical Injection Nozzles

The X-Jet puts house wash mix on a third story dormer while your boots stay on the driveway. This collection has the M5 and Original X-Jet nozzles plus every wear part that keeps them drawing: orifices, proportioner kits, hose assemblies, and replacement heads. We stock them at the Gaithersburg counter, and if you are between orifice sizes, call 301-519-9274 with your machine's GPM before you order.

How an X-Jet Works and Why Contractors Still Use One

An X-Jet injects chemical at the nozzle instead of running it through your machine. High pressure water passing through the orifice creates suction that pulls mix up a 15 foot hose from a bucket at your feet. The soap never touches your pump, hose, unloader, or gun internals, so strong sodium hypochlorite mix does not eat your expensive parts from the inside. Lift the hose out of the bucket or flip the ball valve and you are rinsing with plain water in one second, no waiting for soap to clear the line like a downstream injector.

The trade is that the bucket travels with you around the house. Crews that hate dragging a bucket run a downstream setup instead. Crews that want the hottest mix on the wall with the least gear on the trailer keep an X-Jet in the box.

M5 or Original

The M5 has a twist-adjustable head that changes the fan from a tight stream out to roughly a 60 degree pattern, so one tool covers rinsing high gables and fanning soap across siding. The Original uses fixed patterns and throws the tightest, longest stream of the family, which is why some roof and high-reach crews still prefer it. Either style reaches around 40 feet vertically on a typical 4 GPM machine when the pattern is narrowed down. The M5DS Twist is the oddball: same adjustable head, but built to pair with a downstream injector so the mix arrives through the hose instead of a bucket.

Match the orifice to your machine

The orifice inside the X-Jet must match your flow or the venturi will not pull. The maker's sizing runs #7 for 1 to 2.8 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 8.5 GPM. An oversized orifice is the most common reason a new X-Jet will not draw. If you upgrade your machine, budget the $24.99 orifice swap along with it.

Getting the mix ratio right

Color coded proportioner tips restrict the chemical line to set the water to mix ratio. As a working example, 12.5 percent sodium hypochlorite drawn through a roughly 3 to 1 tip lands on the wall near 4 percent, which is stronger than most downstream setups can deliver. Actual ratios shift with your GPM and PSI, so run a bucket draw-down test once with your machine and write your real numbers on the lid. The full tip set comes in the proportioner replacement kit for about twenty five dollars.

Skip the guesswork. The free SH Mix Calculator has an X-Jet / M5 mode built on the X-Jet proportioner chart. Pick your GPM, orifice, and proportioner color (or none) and it tells you what to put in the bucket to land your target strength on the wall.

Nozzles and Parts Compared

Most of these are on the shelf right now. Prices can move, so check the product page for today's number.

From the Field

Look at what we reorder most and the maintenance story writes itself: orifices, proportioner tips, and draw hoses. Bleach crystals are what kill all three. The crews whose X-Jets last five years drop the draw hose in a bucket of clean water at the end of the day and pull a minute of rinse through the tool. The crews who bag the tool wet buy parts every season. When draw gets weak, work the checklist in order. Wrong orifice for your GPM, crystal buildup in the proportioner tip, an air leak where the hose meets the barb, or a bucket sitting too far below the gun. It is almost never the nozzle body itself.

Related Collections

• SH Mix Calculator with X-Jet / M5 proportioner mode
• All X-Jets
• X-Jet Kits
• Soft Wash Equipment
• Downstream Chemical Injectors
• House Washing Chemicals
• Roof Cleaning Chemicals
• Chemical Hoses
• Foam Cannons and Foamers
• Sharp Shooter Nozzles
• 12 Volt Soft Wash Pumps

Washing houses around Montgomery County? Grab nozzles and mix the same morning at our Gaithersburg shop.

Frequently Asked Questions

Does an X-Jet damage my pressure washer pump?

No, and that is the point. The chemical enters at the nozzle, after every component of your machine. Your pump, hose, and gun only ever see plain water, which is why X-Jets are popular with crews spraying strong bleach mixes.

How high will an X-Jet M5 spray?

Around 40 feet vertically on a typical 4 GPM machine with the pattern twisted down to a stream. Flow, pressure, wind, and pattern width all change the number. More GPM throws farther than more PSI does.

Which orifice size do I need?

Match your machine's GPM: #7 for 1 to 2.8, #9 for 3 to 3.5, #13 for 4 to 4.5, #16 for 5 to 6.5, #20 for 7 to 8, #25 for 8.5 and up. Too big an orifice and the tool will not pull chemical.

What ratio does an X-Jet put on the wall?

It depends on the proportioner tip and your machine. With 12.5 percent sodium hypochlorite and a mid-range tip you can land around 4 percent on the surface. Do a one minute bucket test with your own machine to learn your true draw rate.

Why did my X-Jet stop drawing chemical?

Check four things in order: orifice too large for your GPM, crystallized bleach in the proportioner tip, an air leak at the hose barb, and lift height from the bucket. Soak crusted parts in warm water before you replace anything.

X-Jet or downstream injector for house washing?

X-Jet delivers a hotter mix and rinses instantly, but you carry a bucket. Downstream injection frees your hands and stays on the reel, but the mix is weaker and the soap takes time to clear the hose. Plenty of crews run both and pick per job.