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Stainless Steel Soft Wash JRod with Nozzles Installed
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ST‑2305 Easy‑Pull Spray Gun 5,000 PSI
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Suttner ST-2315 Chemical Resistant Pressure Washer Gun
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Whirl-A-Way & Telescoping Wand Replacement Gun
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About Us
Situated just 10 minutes south of Portland in Oregon City, Expert Power Wash specializes in crafting premium, high-quality custom pressure washing skids and soft wash equipment.
As a local, family-owned business, we place our trust in God and uphold values of hard work, morals, and integrity. We firmly believe that by consistently adhering to these principles, we deliver the finest equipment to enhance your business.
With over 10 years of hands-on experience operating various pressure washing setups, including trailers, box trucks, flatbeds, vans, and skids, we gained invaluable insights into equipment functionality. Faced with breakdowns and failures, the commitment to resolving issues and continual improvement became paramount. Years of field experience have instilled confidence that Expert Power Wash produces the ultimate in pressure washing equipment—no flashy stickers or hype, just unwavering quality.
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Building the right gun, lance and nozzle setup
The gun end of the hose is where most of the frustration on a job comes from - a trigger that is heavy after eight hours, a lance that is the wrong length for the work, or a nozzle that is quietly the wrong size for the machine. All three are cheap to get right and expensive to live with wrong.
Guns
Match the gun to the machine's flow and pressure, then to how long you hold it. A gun rated for 12 GPM on a 4 GPM machine is unnecessary weight; a gun under-rated for an 8 GPM machine is a failure waiting to happen. Easy-pull triggers matter more than people expect on a full day of flatwork. For chemical work, use a gun built for it - a standard pressure gun run on sodium hypochlorite will not last.
| Use | Type of gun |
|---|---|
| General pressure washing, all day | Easy-pull trigger gun rated above your machine's PSI and GPM |
| High flow, 8 GPM and up | High-flow gun - check the GPM rating, not just PSI |
| Downstreaming and house wash | Chemical-resistant gun with a downstream setup |
| Soft wash, 12V or gas | Dedicated soft wash gun with a 1/2 inch inlet and a swivel |
Lances
A 36 inch lance is the default for most work. Go shorter for detail and vehicle work where control matters more than reach; go longer, or add an extension, for second-story rinsing and gutters where a ladder is the alternative. Add a swivel between gun and lance and your wrist will thank you by mid-afternoon.
One finding worth knowing before you buy: a short stainless extension between the gun and a J-Rod measurably increases reach compared with threading the J-Rod straight into the gun. We tested it back to back - see guns, J-Rods and the M5 compared.
Nozzles - the part that sets your pressure
Nozzle orifice size, machine GPM and PSI are one equation, not three settings. A nozzle that is too small spikes pressure and works the unloader; too large and you lose pressure at the surface. Buy the orifice size that matches your machine's flow and rated pressure, then choose spray angle by the job: 0 degrees for spot work only, 15 for stripping, 25 for general cleaning, 40 for rinsing and delicate surfaces, and a soap tip for downstream draw.
Turbo nozzles spin a zero-degree stream in a cone and are the fastest way to remove heavy buildup from concrete - pick one rated at or above your machine's pressure. For downstreaming, a J-Rod holds several nozzles on one rod so you can switch from chemical to rinse to long-range without walking back to the truck.
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Further reading
- Pressure washing guns, J-Rods and the M5: what we actually ran
- Choosing the right nozzles for your 12V soft wash system
- Mastering downstreaming with a pressure washer
- 4 GPM vs 5.5 GPM vs 8 GPM: what size do you need?
Common questions
What do pressure washer nozzle numbers mean?
The first part is the spray angle in degrees and the second is the orifice size. The orifice has to match your machine's flow and pressure - the same 25 degree angle comes in many orifice sizes, and picking the wrong one either spikes your pressure or loses it at the surface.
Which nozzle angle should I use?
0 degrees for spot removal only, 15 for stripping and heavy work, 25 as the general purpose tip, 40 for rinsing and delicate surfaces, and a soap or black tip to drop pressure enough for a downstream injector to draw.
Why is my downstream injector not pulling chemical?
Almost always nozzle choice. A downstream injector needs low pressure at the nozzle to create draw, so it will not pull with a standard cleaning tip fitted. Fit the soap nozzle. After that, check for a blocked filter on the chemical pickup and a worn or wrong-size injector orifice.
Do I need a swivel on my gun?
You do not need one, but after a full day of flatwork you will want one. A swivel stops the hose twisting against your wrist and takes a surprising amount of fatigue out of the job.
Can I use a regular pressure washer gun for soft washing?
For downstreaming through the machine, yes, provided the gun is chemical resistant. For a dedicated 12V or gas soft wash system, use a soft wash gun - it has a larger inlet suited to high flow at low pressure, and a standard pressure gun will restrict it.
