Aqua-Rocket vs Aqua-Rocket PRO Turbo Nozzle: Which One for Your Truck?
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Hydra-Flex makes the Aqua-Rocket turbo nozzle in two versions: the standard Aqua-Rocket with a yellow cover and the Aqua-Rocket PRO with a blue one. They look nearly identical and share the same 1/4" inlet, but they are rated for different pumps and different water temperatures, and their parts don't interchange. Here is how to pick the right one for your truck.
The short answer
- Buy the standard Aqua-Rocket if your pump runs 3,600 PSI or less, your water stays at or under 150°F and you need no more than about 5.7 GPM through the nozzle.
- Buy the Aqua-Rocket PRO if you run heated water above 150°F, a pump above 3,600 PSI, or more flow than the standard model's largest size can pass.
- Stay with the standard model for low-pressure work. It runs from 750 PSI; the PRO needs at least 1,500 PSI.
Aqua-Rocket vs Aqua-Rocket PRO specs
| Aqua-Rocket | Aqua-Rocket PRO | |
|---|---|---|
| Cover color | Yellow | Blue |
| Inlet pressure | 750 to 3,600 PSI | 1,500 to 5,600 PSI |
| Max water temp | 150°F | 212°F |
| Flow range | 0.9 to 5.7 GPM | 1.8 to 11.8 GPM |
| Sizes | #2.0, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0 | #3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 8.0, 10.0 |
| Spray pattern | 0° stream rotating to a 24° cone | 0° stream rotating to a 22° cone |
| Inlet | 1/4" FNPT | 1/4" FNPT |
| Build | Stainless housing, tungsten carbide tip and seat, rubber cover | Stainless housing, tungsten carbide tip and wear surfaces, brass boot, rubber cover, inlet screen |
| Hydra-Flex part #s | 1003517-020 to -060 | 1002402-030 to -100 |
| Nozzle price | $164.40 | $262.00 |
| Repair kit price | $110.30 | $175.10 |
Specs from Hydra-Flex listings and dealer catalogs. Some dealer literature lists the standard model's pattern as 22 to 24°. HydroVac Supply prices as of November 2026.
Pressure: check both ends of the range
Most people look only at the top number. The PRO's 5,600 PSI ceiling is the highest of the hydrovac nozzles in our comparison guide, so it covers any pump that pushes past the standard model's 3,600 PSI limit.
The bottom number matters just as much. A turbo nozzle needs enough pressure to spin. The PRO is rated from 1,500 PSI, the standard Aqua-Rocket from 750 PSI. If you turn pressure down for delicate work, the standard model is the one that keeps turning. Below its rated minimum, a turbo nozzle may not spin properly.
Heat: the 150°F line
For crews that heat their water, this spec decides it. The standard Aqua-Rocket is rated to 150°F. If your truck heats water for frozen ground or hard clay and the water at the nozzle runs hotter than that, you need the PRO, rated to 212°F.
Check your heater's outlet temperature before the first cold snap, not after a cover or seal fails.
Flow: the size range sets the ceiling
Both models use the industry sizing standard: the size number is the flow in GPM at 4,000 PSI, and flow drops with pressure. The standard Aqua-Rocket tops out at a #6.0. At 3,000 PSI that is about 5.2 GPM. If your pump makes more water than that at your dig pressure, no standard size will match it, and the pressure will climb to your unloader setting while the extra flow bypasses. The PRO goes up to a #10.0, about 8.7 GPM at 3,000 PSI.
On a phone, swipe the table sideways to see every column.
| Size | Model | 1,500 PSI | 2,500 PSI | 3,000 PSI | 3,600 PSI | 5,000 PSI |
|---|---|---|---|---|---|---|
| #2.0 | Standard | 1.2 | 1.6 | 1.7 | 1.9 | n/a |
| #3.0 | Both | 1.8 | 2.4 | 2.6 | 2.8 | 3.4 |
| #3.5 | Both | 2.1 | 2.8 | 3.0 | 3.3 | 3.9 |
| #4.0 | Both | 2.4 | 3.2 | 3.5 | 3.8 | 4.5 |
| #4.5 | Both | 2.8 | 3.6 | 3.9 | 4.3 | 5.0 |
| #5.0 | Both | 3.1 | 4.0 | 4.3 | 4.7 | 5.6 |
| #5.5 | Both | 3.4 | 4.3 | 4.8 | 5.2 | 6.1 |
| #6.0 | Both | 3.7 | 4.7 | 5.2 | 5.7 | 6.7 |
| #8.0 | PRO | 4.9 | 6.3 | 6.9 | 7.6 | 8.9 |
| #10.0 | PRO | 6.1 | 7.9 | 8.7 | 9.5 | 11.2 |
GPM from the standard nozzle formula, which matches Hydra-Flex's published ranges for both models (0.9 to 5.7 GPM and 1.8 to 11.8 GPM). The standard model is rated to 3,600 PSI and the PRO from 1,500 PSI, so stay inside each model's range.
Quick sizing math: nozzle size = 2 × pump GPM ÷ √(PSI ÷ 1,000). Round up to the next size you can buy so you stay under your pressure target.
The 1/4" inlet on a hydrovac lance
Both Aqua-Rockets thread on with a 1/4" FNPT inlet, smaller than the 1/2" connection on most hydro excavation lances. You'll need a reducer rated for your working pressure, and on a PRO running above 3,600 PSI, every fitting between the pump and the nozzle has to carry that rating too. We stock high-pressure fittings in Hose and Fittings.
The Aqua-Rocket is an industrial cleaning nozzle, not a dedicated digging nozzle. Neither model has the non-conductive coating of a purpose-built hydro excavation nozzle like the Ripsaw HD. Many crews run an Aqua-Rocket for washdown and cleanup and a dedicated nozzle for digging near utilities. Our best hydrovac nozzle guide compares the options.
Rebuilding an Aqua-Rocket or Aqua-Rocket PRO
Both models are fully rebuildable with Hydra-Flex repair kits, but the kits are not interchangeable. Order by model and by size:
- Match the model. Aqua-Rocket repair kits fit the yellow standard nozzle only. Aqua-Rocket PRO repair kits fit the blue PRO only.
- Match the size. The size is laser engraved on the end cap. A nozzle marked 3.0 takes a 3.0 kit. The internal parts are sized, so a kit in another size won't fit correctly.
- What's in the kit: the PRO kit includes the rubber boot, O-ring, tip insert, inlet screen, rotor assembly and seat retainer. The standard kit covers the same internal wear parts for the yellow nozzle.
- Tools: an adjustable wrench that opens to at least 1-1/2", small needle-nose pliers, and small Phillips and flathead screwdrivers.
Rebuild or replace? A kit costs about two-thirds of a new nozzle for either model ($110.30 vs $164.40, and $175.10 vs $262.00). That still saves money, but less than on nozzles with cheaper wear parts. If the housing is cracked or the threads are damaged, replace the nozzle.
Signs your Aqua-Rocket needs attention
| Symptom | Check first | Then |
|---|---|---|
| Nozzle won't spin or spins unevenly | Pressure is above the model's minimum (750 or 1,500 PSI); inlet screen is clean | Repair kit for your size |
| Pressure lower than normal at the same throttle | Leaks at the reducer or fittings | Worn tip lets more water through: repair kit |
| Pressure high, unloader cycling | Clogged inlet screen; nozzle too small for the pump | Clean the screen or go up a size |
| Cover damaged after hot-water use | Water temperature against the 150°F standard rating | Switch to the PRO if you run water above 150°F |
| Water leaking at the inlet | Thread sealing on the 1/4" connection | Re-seal or replace the reducer |
A pressure gauge at the handle gives you a baseline reading with a fresh nozzle, so you can see wear before it costs you digging time.
Which Aqua-Rocket should you buy?
| Your truck | Pick |
|---|---|
| Cold water, pump up to 3,600 PSI, up to about 5.7 GPM | Aqua-Rocket |
| Heated water above 150°F | Aqua-Rocket PRO |
| Pump above 3,600 PSI | Aqua-Rocket PRO |
| More flow than a #6.0 passes at your pressure | Aqua-Rocket PRO (#8.0 or #10.0) |
| Low-pressure work under 1,500 PSI | Aqua-Rocket |
| Lowest upfront cost | Aqua-Rocket |
Shop both on our Hydra-Flex page, or see every option in Hydro Excavation Nozzles. Repair kits for both are in Nozzle Rebuild Kits.
Aqua-Rocket FAQ
What's the difference between the Aqua-Rocket and the Aqua-Rocket PRO?
The PRO is rated for higher pressure (1,500 to 5,600 PSI vs 750 to 3,600), hotter water (212°F vs 150°F) and more flow (up to 11.8 GPM vs 5.7). The standard model has a yellow cover; the PRO's is blue.
Can I use an Aqua-Rocket with hot water?
The standard Aqua-Rocket is rated to 150°F. For hotter water, use the Aqua-Rocket PRO, rated to 212°F.
Do Aqua-Rocket and Aqua-Rocket PRO repair kits interchange?
No. Each kit fits its own model only, and kits are sized to the nozzle. Order the model and the size engraved on the end cap.
What inlet size is the Aqua-Rocket?
Both models have a 1/4" FNPT inlet. On a 1/2" hydrovac lance, use a reducer rated for your working pressure.
Why won't my Aqua-Rocket PRO spin?
Check that you're above its 1,500 PSI minimum and that the inlet screen is clean. If both check out, the internal parts are likely worn and the nozzle needs a PRO repair kit in its size.
What size Aqua-Rocket do I need?
Use nozzle size = 2 × pump GPM ÷ √(PSI ÷ 1,000), then round up. For example, a 5 GPM pump at 3,000 PSI works out to a #5.8, so run a #6.0.
Not sure which one fits your truck?
Call 402-237-1914 or email info@hydrovac-supply.com, Monday to Friday, 7 AM to 4 PM. Tell us your pump's GPM and PSI and your water temperature, and we'll match the model and size. We ship anywhere in the US.