1/8" MEG Nozzles

A five dollar nozzle decides how well your five thousand dollar rig cleans. 1/8" MEG nozzles are the threaded stainless tips that screw into surface cleaner bars, water brooms, whirlaways, and specialty wands. Sun Brite Supply keeps the common angles and orifice sizes on the shelf in Gaithersburg, MD. If the sizing math below makes your head hurt, call 301-519-9274 with your machine specs and we will do it for you.

How to Size 1/8" MEG Nozzles

MEG nozzles thread straight into the fixture instead of snapping into a quick coupler. The 1/8 inch male pipe thread is the standard on most surface cleaner spray bars and water broom manifolds, while wands usually take the bigger 1/4" MEG size. Same numbering system, different thread. Grab the wrong one and it rattles loose or never seats.

Reading the Number on the Nozzle

Every MEG nozzle carries a four or five digit code. The first two digits are the fan angle and the rest is the orifice number. A 2503 sprays a 25 degree fan through a number 3 orifice. The orifice number equals the GPM that nozzle flows at 4,000 PSI. Bigger orifice, more flow and less pressure. Smaller orifice, more pressure until you choke the machine. Zero degree tips drill, 15 degree tips cut, 25 degree tips sweep, and 40 degree tips rinse wide and gentle.

The Surface Cleaner Math

Here is the part that ruins results when it is wrong. A surface cleaner splits your machine flow across every nozzle on the bar, so you divide the orifice size, not repeat it. Find your machine total on a nozzle chart first. A 4 GPM, 4,000 PSI machine wants a number 4 orifice in total. On a two nozzle bar that is a pair of number 2 tips. An 8 GPM machine running two nozzles takes two number 4 tips. If the division lands between sizes, round up. A slightly larger orifice costs you a little pressure. A smaller one overloads the pump and unloader, and those parts cost real money. Streaks in your flatwork usually mean worn or mismatched tips, not a bad machine.

1/8" MEG Nozzle Lineup

Spraying Systems WashJet tips are hardened stainless and hold their spec longer than bargain tips. At these prices, buy spares. The job site always eats one.

From the Field

Nozzles are wear items, and worn tips are the most common reason a healthy machine cleans badly. Water and grit slowly open the orifice, pressure drifts down, and nobody notices because it happens over months. The counter test is simple: if your gauge reads 10 percent under spec with a fresh water supply, put new tips on before you touch the pump. On surface cleaners, replace both bar tips together, always in the same size and angle, or the machine leaves zebra stripes. When a tip clogs on site, do not poke it with a paper clip and do not crank the pressure to blast it clear. A proper unclogger tool clears the debris without scarring the orifice, and a scarred orifice fans crooked forever.

Related Collections

• All pressure washer nozzles
• 1/4" MEG nozzles for wands and lances
• Quick connect tips
• Rotating turbo nozzles
• Soap and foam tips
• Surface cleaners and Whirlaway machines
• Water brooms
• Nozzle holders and nozzle accessories
• See the full nozzle wall at our Gaithersburg store.

Frequently Asked Questions

What is a MEG nozzle?

A MEG nozzle is a one piece stainless spray tip with a male pipe thread instead of a quick connect body. You thread it into a spray bar, broom manifold, or nozzle holder with a wrench. The 1/8 inch thread version fits most surface cleaner bars.

What do the numbers like 2503 mean?

First two digits are the spray angle, the rest is the orifice number. A 2503 is a 25 degree fan with a number 3 orifice, which flows 3 GPM at 4,000 PSI. Angle spreads the water, orifice sets flow and pressure.

What size nozzles does my surface cleaner need?

Look up your machine PSI and GPM on a nozzle chart to get its total orifice number, then divide by the number of nozzles on the bar. A 4 GPM at 4,000 PSI machine with a two nozzle bar takes two number 2 tips. Round up when you land between sizes.

What is the difference between 1/8 and 1/4 MEG nozzles?

Thread size only. The spray angle and orifice numbering work the same. Surface cleaner bars and water brooms usually take 1/8 inch, wand nozzle holders usually take 1/4 inch. Check what your fixture is tapped for before ordering.

How often should I replace spray nozzles?

When operating pressure falls about 10 percent below spec, the orifice has worn open and it is costing you cleaning speed. For daily commercial use that can be every few months. Replace surface cleaner tips in matched pairs.

How do I unclog a pressure washer nozzle?

Pull the tip, push the debris backward through the orifice with an unclogger tool, and rinse it out. Never enlarge the hole with wire or a drill bit. A deformed orifice sprays off pattern and never seals a clean fan again.