Home        Store        Docs        Blog

Has anyone mounted a pressure washer wand/nozzle on an ROV before?


#1

We need to pressure wash the walls inside of a water tank - just wondering if anyone has mounted a pressure washer spray wand/nozzle onto an ROV before? Other option is divers doing the pressure washing.


(Etienne Demers) #2

This is a type of HP water blaster you would normally install on an ROV: https://www.caviblaster.com/caviblaster-1030-rov

You need to power this with hydraulics.

The BR2 can’t handle it.

The only option I can think of is a surface unit with a balanced gun so you don’t get pushed off the wall.

You could try and rig a pressure washer you get in a hardware store. Some people have done it. Not sure how BR2 would handle this.

Cavitation cleaning is by far the best way.


#3

Many thanks for the reply. From what you have said it sounds like putting one of these on the end of a surface unit and then mounting securely on the BlueROV might work with a bit of practice and adjustment.

Cavit Gun


(Etienne Demers) #4

Yeah and you would also not point it straight. Angle it about 30 degrees. This will also divert the back flow away from the ROV.

I would personally get the hand grip / trigger off and put a swivel fitting instead. Then you just build a simple bracket.

You’ll be limited by the amount of hose from the surface unit VS output pressure.


#5

Thanks for the tip about mounting it at 30 degrees - one less bit of trial and error to solve.

Certainly would be removing the hand grip/trigger unit and putting a swivel fitting on - will make things much simpler.

We can get 20hp 4800 psi pressure washers with 30 metres of hose quite easily - hopefully the pressure loss through 30 metres of hose won’t drop the pressure lower than the minimum required to operate the cavit nozzle


(Etienne Demers) #6

I think you need about 1800psi at the nozzle.

I higher hose ID will help you. Ensure it is rated to your operated pressure.

I would have the hose end up and nozzle pointing down and outward with a bracket secured at the top of the ROV. This way you can see what you’re doing.