Repair Kit for St-357 3.0 Turbo Nozzle
Repair Kit for St-357 3.0 Turbo Nozzle
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- Item# 5357
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Rotating Turbo Nozzle - Professional Grade
This rotating turbo nozzle is built for professional pressure washing contractors and commercial cleaning operations, with commercial-grade specifications. Designed for the demands of daily commercial use - not weekend homeowner projects. Available at Sun Brite Supply in Gaithersburg, MD - stocked and ready to ship.
Every component at Sun Brite Supply is the same equipment our team has used and trusted across 30 years in the pressure washing industry. We don't stock consumer-grade parts with professional labels - if it's in our catalog, it's contractor-tested.
Where Contractors Use This Rotating Turbo Nozzle
Application and Compatibility
Turbo nozzles concentrate a zero-degree pencil jet into a high-speed rotating pattern that delivers aggressive cleaning on hard surfaces. They're the go-to tool for concrete driveways, parking garages, loading docks, and paint removal jobs. Match the nozzle orifice to your machine's GPM output - undersized turbo nozzles restrict flow and damage pumps. If you're not sure about compatibility, call (301) 519-9274 - we match parts to machines every day.
The performance gap between professional-grade and consumer-grade equipment shows up on every job. Contractors who invest in commercial components spend less on replacements, finish jobs faster, and deliver results that earn repeat business and referrals. That's the math that matters when you're running a pressure washing company - not just the upfront price tag.
Installation and Setup
Match Orifice to GPM
The orifice number determines flow capacity. Using too small an orifice creates backpressure that damages your pump. Too large drops your cleaning power.
Thread onto Your Wand
Apply two wraps of PTFE tape to the male threads. Hand-tighten, then snug with a wrench - don't overtighten brass fittings.
Test Before Full Operation
Squeeze the trigger and listen for smooth rotation. If it wobbles or stalls, check for debris in the inlet screen before continuing.
Compatible With
Specifications
| Product Type | Rotating Turbo Nozzle |
| Available Options (Orifice Size) | 3.0, 3.5, 4.5, 5.5, 6.0 |
| Ships From | Gaithersburg, MD |
Maintenance and Troubleshooting
Flush the nozzle with clean water after every use, especially after chemical applications. Store it in a dry toolbox where it won't bounce against other tools. When cleaning performance drops at the same machine pressure, the orifice is worn - replace the nozzle rather than compensating with higher pressure.
When to Replace vs. Repair
If this rotating turbo nozzle shows signs of wear but is still functional, a rebuild kit or replacement seals may extend its service life at a fraction of the full replacement cost. However, if you see cracks, cross-threading, severe corrosion, or complete failure under pressure, replacement is the safer and more economical choice. Call (301) 519-9274 and we'll help you decide. Always follow OSHA pressure washing safety guidelines when working with high-pressure equipment.
Frequently Asked Questions
Need Help Choosing the Right Part?
30+ years of industry experience. We match parts to machines every day.
Why Buy From Sun Brite Supply?
Sun Brite Supply has served pressure washing contractors from our Gaithersburg, MD location since 2011. We stock the professional-grade parts and equipment you won't find at big box stores. Every in-stock order ships within 24 hours. Local customers can pick up the same day. Call (301) 519-9274 and talk to someone who knows this equipment - not a call center.