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UHP / Ultra High Pressure Cleaning Equipment

Water jetting at ultra-high pressures (as classified by the SSPC when exceeding 25,000 psi) is effective in removing rust, resins, chemical residues, paints, and epoxies. Unlike using chemicals, solvents, and abrasives, this method doesn’t require special disposal procedures.

UHP Vacuum Head
Contains the removed coatings and contaminants

VertiDrive Vacuum Head

Ultra High Pressure
Surface Cleaning Without Abrasives

VertiDrive UHP

Pressure Washing
Fast and Powerful Single Operator Solution

Pressure Washing - Ship

Best Scenarios Benefits Disadvantages Driving Speed Weight lbs/kgs Payload Capacity UHP Metrics Can Rent Options to Select
VertiDrive V400 UHP Closed Head Robot

VERTIDRIVE V400 CLOSED-LOOP UHP ROBOT

  • An immediate dry surface is required
  • Flash rust is a not allowed
  • Noise is required to be reduced
  • Other trades are in near proximity
  • Flying debris is prohibited
  • Wastewater is required to be collected
  • ATEX zone 2 is required
  • Closed-system vacuum reduces clean-up
  • Only supports UHP application
  • Requires a much larger radius than M7/V700
  • In general slower than an open application
  • Full set with vacuum has a higher CAPEX than an open solution (V300/V700)
Max. 16.4 ft (5m) / min 194 lbs (88 kgs) 330 lbs (150 kgs)
  • Cleaning width 15.75 inches
  • Max 3000 bar /10.5 gal min – 43.5k psi
  • Self-rotating cross with 16 x M10 nozzles
  • Average up to 484ft² per hour (45m²)
YES Cooled or non-cooled control box, Transport frame, Fall arrest descender 30 meters, Light arrangement (V400 Series), V400 Series Spare Part Kit, UHP Cross TetraCORE configuration package, Range Extension Set (V400/700 Series), Vacuum System Skid mounted ATEX Zone II Certified, Big Bag Holder with discharge valve for use with Vacuum System Skid mounted ATEX Zone II Certified.
VertiDrive M7 UHP Robot

VERTIDRIVE M7 BLASTING ROBOT

  • When all stages of surface prep are needed (washing, coating removal, removal/new profile creation)
  • When there are strict quality standards required (step timer to assure this).
  • When nozzles up to #7-8 are enough.
  • When one wants a blasting robot for a lower price.
  • Pressure Washing Capable
  • UHP Capable
  • Abrasive Blasting Capable
  • Does not have cooled control box option,
  • Wears quicker (compared to v700), less holding force than v700 (decreasing the height it can go up with heavy hoses, the higher the heavier)
  • Not available in ATEX Zone 2
Max. 15 ft (4.5m) / min 120 lbs (54 kgs)
  • Working width 60 inches
  • 2500 bar / 12 gal min – 36k psi
  • Self rotating nozzle bar with 8 x M10 nozzles
YES Transport frame, Fall arrest descender 30 meters, Light arrangement, M7 Spare Part Kit, Range Extension Set

Payload: 80 kg

VertiDrive v700 UHP Robot VERTIDRIVE V700 BLASTING ROBOT
  • When all stages of surface prep are needed (washing, coating removal, removal/new profile creation)
  • Better capability to drive on uneven thicknesses due to the adjustable rear magnet
  • When one wants to use up to 3x #10 Snakebite nozzles
  • When there are strict quality standards required (step timer to assure this).
  • When the steel asset is considerably high
  • Pressure Washing Capable
  • UHP Capable
  • Abrasive Blasting Capable
Not available in ATEX zone 2 Max. 16.4 ft (5m) / min 137 lbs (62 kgs) 397 lbs (180 kgs)
  • Working width 60 inches
  • Max 3000 bar /10.5 gal min – 43.5k psi
  • Self rotating nozzle bar with 8 x M10 nozzles
  • Achieve up to 646ft² (60m²)
YES Cooled & non cooled control box option, Transport frame, Fall arrest descender 30 meters, Light arrangement (V700 Series), V700 Series Spare Part Kit, Range Extension Set (V400/700 Series)

  VertiDrive V400 UHP Closed Head Robot VertiDrive M7 UHP Robot VERTIDRIVE V700 BLASTING ROBOT
VERTIDRIVE V400 CLOSED-LOOP UHP ROBOT

VERTIDRIVE M7 BLASTING ROBOT

VERTIDRIVE V700 BLASTING ROBOT
Best Scenarios
  • An immediate dry surface is required
  • Flash rust is a not allowed
  • Noise is required to be reduced
  • Other trades are in near proximity
  • Flying debris is prohibited
  • Wastewater is required to be collected
  • ATEX zone 2 is required
  • When all stages of surface prep are needed (washing, coating removal, removal/new profile creation)
  • When there are strict quality standards required (step timer to assure this).
  • When nozzles up to #7-8 are enough.
  • When one wants a blasting robot for a lower price.
  • When all stages of surface prep are needed (washing, coating removal, removal/new profile creation)
  • Better capability to drive on uneven thicknesses due to the adjustable rear magnet
  • When one wants to use up to 3x #10 Snakebite nozzles
  • When there are strict quality standards required (step timer to assure this).
  • When the steel asset is considerably high
Benefits
  • Closed-system vacuum reduces clean-up
  • Pressure Washing Capable
  • UHP Capable
  • Abrasive Blasting Capable
  • Pressure Washing Capable
  • UHP Capable
  • Abrasive Blasting Capable
Disadvantage
  • Only supports UHP application
  • Requires a much larger radius than M7/V700
  • In general slower than an open application
  • Full set with vacuum has a higher CAPEX than an open solution (V300/V700)
  • Does not have cooled control box option,
  • Wears quicker (compared to v700), less holding force than v700 (decreasing the height it can go up with heavy hoses, the higher the heavier)
  • Not available in ATEX Zone 2
  • Not available in ATEX zone 2
Driving Speed Max. 16.4 ft (5m) / min Max. 15 ft (4.5m) / min Max. 16.4 ft (5m) / min
Weight lbs/kgs 194 lbs (88 kgs) 120 lbs (54 kgs) 137 lbs (62 kgs)
Payload Capacity 330 lbs (150 kgs) 397 lbs (180 kgs)
UHP Metrics
  • Cleaning width 15.75 inches
  • Max 3000 bar /10.5 gal min – 43.5k psi
  • Self-rotating cross with 16 x M10 nozzles
  • Average up to 484ft² per hour (45m²)
  • Working width 60 inches
  • 2500 bar / 12 gal min – 36k psi
  • Self rotating nozzle bar with 8 x M10 nozzles
  • Working width 60 inches
  • Max 3000 bar /10.5 gal min – 43.5k psi
  • Self rotating nozzle bar with 8 x M10 nozzles
  • Achieve up to 646ft² (60m²)
Available to Rent YES YES YES
Options to Select Cooled or non-cooled control box, Transport frame, Fall arrest descender 30 meters, Light arrangement (V400 Series), V400 Series Spare Part Kit, UHP Cross TetraCORE configuration package, Range Extension Set (V400/700 Series), Vacuum System Skid mounted ATEX Zone II Certified, Big Bag Holder with discharge valve for use with Vacuum System Skid mounted ATEX Zone II Certified. Transport frame, Fall arrest descender 30 meters, Light arrangement, M7 Spare Part Kit, Range Extension Set

Payload: 80 kg

Cooled & non cooled control box option, Transport frame, Fall arrest descender 30 meters, Light arrangement (V700 Series), V700 Series Spare Part Kit, Range Extension Set (V400/700 Series)

When You Should Use Ultra High Pressure Water Jetting

What is Ultra High Pressure (UHP) water?

UHP water is 29,000 psi and above. In general, you should use UHP water for removal when the coating is thicker. UHP water is great for 40 mil coatings because the water is able to slice through the coating and remove it from the substrate. This is a better solution compared to abrasive blasting because abrasives have to erode the coating all the way down from the surface.

The possibility of using Ultra High Pressure water becomes distinct when removing abrasion resistant coatings. Examples of abrasion resistant coatings are Glass-Flake Epoxy, Coal-Tar Epoxy, and Chlorinated Rubber.

With UHP water jetting, you will complete the project faster, reduce the clean-up time, and save abrasive.
After you’re finished removing the rust or coating, all that’s left to do is complete a fast whip blast in order to make sure the profile is prepped.  UHP water will deep clean any pollution or contamination on the profile, but it will not ruin any profile on the substrate.

RECOMMENDED UHP APPLICATIONS

Removing rubber linings or any other linings that protect from wear from the inside of the pipes and spools is important. Scarification of concrete is another recommended UHP application, in order to secure the bond of coatings and overlays that have been applied.

Understanding UHP Water Blasting Systems

Water working for you.

An Ultra-High Pressure (UHP) water blasting system can be used for your hardest commercial and industrial stripping/cleaning jobs. With UHP water systems, there is low impact on the environment and it is a cost effective way to prepare a blasting surface.

Best uses for UHP systems would be for removing rust, resins, chemical residues, scale and tick or abrasion resistant coatings. The abrasion resistant coatings could include coal-tar epoxies, chlorinated rubber, glass-flake coatings and polyurethanes. These systems work by cutting directly through the coating or rust, which dis-bonds it from the exterior and then washes it off. This results in a completely clean surface.

KEY COMPONENTS IN UHP WATER SYSTEMS

UHP water jetting systems have a high pressure pump that is extremely important. The pumps deliver pressures between 6,000psi and 40,000 psi and have power ratings up to 1,000  horsepower. These systems can be powered by electric or diesel, and skid, trailer or container mounted.

For hazardous environments, special models are obtainable. The Protective Apparel for the workers operating the UHP equipment. This apparel is designed specifically for UHP Water Jet Operators to protect them from a high pressure water stream.

The UHP pump connects to a hose that connects to the cleaning tools. There are many tools that are available for lots of different applications, including:

  • Vacuum-attached crawlers
  • Internal tank cleaning head
  • Internal pipe and tube cleaning tools
  • Floor and grate cleaners
  • Remote-controlled robotic cleaning systems

USING ULTRA HIGH PRESSURE (UHP) FOR SURFACE PREPARATION

Using UHP water for surface preparation is becoming more popular. Not only is UHP jetting dustless, it also decreases the amount of waste from the project due to the fact that there is no abrasive media being used. Other tasks can be completed around the blasting site with UHP as well since no abrasive has to be used.

A great thing about UHP is that the clean surface does not get blasted with any contaminants. It actually makes it even cleaner after taking off contaminants and soluble salts. UHP stripping will wash the surface and transform it back to its’ original profile. Note that is does not create a new surface profile.

Water jetting systems are also commonly used among other tools to take paint and coatings off, get abrasive blast wet, slice slag out of drain lines, take coatings from floors and grates, demolish concrete, wash interiors of tanks, and cut steel plates.

BLASTING WITH HP & UHP

The Society for Protective Coatings (SSPC) and NACE International have created four surface preparation standards for water jetting. The highest standard is SSPC-SP WJ-1/NACE WJ-1. SP WJ-1 requires cleaning metals to bare substrate using HP.

The other three standards in this set are:

  • SSPC-SP WJ-2/NACE WJ-2
  • SSPC-SP WJ-4/NACE WJ-4
  • SSPC-SP WJ-3/NACE WJ-3

NACE/SSPC produced a guide that shows uncoated and coated rusted steel surfaces cleaned to WJ-4, WJ-3. WJ-2 and WJ-1 finishes. The other photos show degrees of heavy, moderate and light flash rusting after the UHP process.

PERSONAL PROTECTIVE EQUIPMENT APPROPRIATE TO WATER JETTING

Before starting UHP work, a risk assessment and identification has to be done in order to choose PPE. The correct PPE has to be worn in hazardous areas.

Why Use UHP?

For industrial surface prep, contractors constantly seek methods that are efficient, cost-effective, and environmentally responsible. One solution that checks all these boxes is Ultra High Pressure (UHP) cleaning. With water jet pressures exceeding 25,000 psi, UHP cleaning has revolutionized the way surfaces are prepared and maintained. From removing stubborn coatings and contaminants to preparing surfaces for new paint, UHP cleaning offers unparalleled efficiency. It eliminates the need for harsh chemicals, which not only reduces costs but also minimizes environmental impact. Additionally, the precision and reduced abrasive nature of UHP cleaning ensure that surfaces aren’t unduly worn or damaged in the process.  NOTE:  although UHP doesn’t create a surface profile, it does restore the current profile.

Moreover, the benefits of UHP cleaning extend beyond the immediate results. For contractors, adopting this method translates to faster project turnaround times due to the reduced need for secondary cleanup – there’s no sand or grit residue to deal with as in traditional abrasive methods. Plus, with an increased focus on eco-friendly practices in various industries, UHP cleaning positions contractors at the forefront of sustainable solutions, giving them an edge in the competitive market. In a nutshell, incorporating UHP cleaning into one’s service offerings is not just a good practice; it’s a strategic move for contractors aiming for top-notch results and long-term business growth.

Common Issues With UHP

Ultra High Pressure (UHP) cleaning, while an impressive advancement in industrial cleaning, isn’t without its set of challenges. One of the foremost concerns with UHP cleaning is equipment wear and tear. Given the extreme pressures involved, the machinery and nozzles can experience rapid degradation. Regular maintenance checks become essential, and failing to do so can lead to reduced efficiency, or worse, equipment failure. Furthermore, while the method itself is less abrasive on the cleaning surface, it demands a high degree of skill from the operator. An untrained hand can easily damage the substrate or inadvertently remove materials that were meant to stay intact, especially when working on delicate or thin materials.

Safety, too, is a significant concern when working with UHP systems. The immense force exerted by the water jets can pose serious injury risks if mishandled. Operators must be adequately trained and always equipped with safety gear like goggles, gloves, and protective suits. Additionally, while UHP cleaning minimizes the use of chemicals, the high pressure can aerosolize harmful substances present on the surface, making them inhalable and posing health risks. Ensuring proper ventilation and protective measures are crucial to safeguard against this. In essence, while UHP cleaning offers a plethora of benefits, understanding its challenges is crucial for its safe and efficient application.

Considerations For The Right UHP Equipment?

UHP water pumps are the heart of Ultra High Pressure (UHP) cleaning systems, responsible for generating the immense pressures that make such deep cleaning possible. When using one, it’s crucial to consider several factors. Firstly, the pump’s design and materials should be tailored for longevity given the high-stress environment of UHP applications. Opting for a pump with corrosion-resistant materials can significantly enhance its lifespan. Secondly, the pump’s capacity should match the job’s requirements. An overpowered pump might lead to wastage and unnecessary wear, while an underpowered one can reduce efficiency. Maintenance is another crucial aspect; regular checks for wear and tear, lubrication, and seal integrity are essential to keep the pump running optimally. Additionally, operators should be mindful of the water quality fed into the pump. Impurities or debris in the water can cause blockages or damage the pump’s internal components. In essence, while UHP water pumps are robust machines, their performance and longevity heavily depend on mindful usage and diligent upkeep.

When selecting hoses, it’s paramount to ensure they’re rated for the specific pressures in use, while also being flexible enough for maneuverability and made of materials resistant to abrasion and wear. Seals play a vital role in maintaining the system’s integrity; they must be crafted from high-quality materials that can withstand the extreme pressures without degradation, and regular inspections are necessary to prevent catastrophic failures. Nozzles, the direct interface with the cleaning task, require careful selection based on the surface and cleaning requirement. Their design determines the water’s spray pattern and force, which can significantly influence the cleaning efficiency and potential surface damage. In essence, when it comes to UHP cleaning, a keen eye on these critical components is the key to balancing performance, safety, and equipment longevity.

Case Studies

ABRASIVE CONSUMPTION REDUCED BY 80% BY USING UHP

Application: Tank Coating removal

Equipment: Vertidrive M4

VERTIDRIVE BLASTS GIGANTIC WATER TANK

Client: Yarra Water Valley

Location: Doncaster East, Victoria, Australia

Application: Tank Coating removal

Equipment: Vertidrive M4

NAVY HULL PROJECT NEARLY 3X PRODUCTIVITY WITH VERTIDRIVE M4

Client: Eptec
Industry: Oil & Gas
Location: Australia
Equipment: VertiDrive M4 UHP / NLB 300hp – 10 gallon per minute pump

UHP and VertiDrive M7 Deliver 1,345 Ft2/Day Productivity

Client: BME Services
Industry: Marine
Equipment: VertiDrive M7 UHP / 2500 Bar – 6.8 gal (26 l) per minute pump

VertiDrive M4: Average Production Rate of 3,200-4,300 ft2 per 8-Hour Shift

Client: Persy Steel Protection
Industry: Oil & Gas
Location: Rotterdam, Netherlands
Equipment: VertiDrive M4 / 2500 bar – 8.5 gal (32 l) per minute pump / Vacuum system

VertiDrive: pressure washing 10, 764 ft2 per day production

Client: Snowy Hydro Penstocks
Location: New South Wales, AU
Equipment: VertiDrive M7 – Pressure Washing

Frequently Asked Questions

  • What is Ultra High Pressure (UHP) cleaning?

    UHP cleaning is a method where water is propelled at pressures exceeding 25,000 psi to clean surfaces. This method is highly effective at removing tough coatings, contaminants, and residues without the use of chemicals.
  • What are the primary applications of UHP cleaning?

    UHP cleaning is used in a variety of industries, including ship maintenance (removing marine growth and paint from ship hulls), concrete demolition, surface preparation before painting, tank cleaning, and the removal of rust, scale, and other contaminants from metal structures.

  • Is UHP cleaning environmentally friendly?

    Yes, UHP cleaning is often considered more environmentally friendly than traditional cleaning methods because it typically uses only water without the need for harmful chemicals. Additionally, it produces less waste, which reduces the need for disposal of hazardous materials.

  • How does UHP cleaning compare to sandblasting or other abrasive methods?

    UHP cleaning is less abrasive than methods like sandblasting. It minimizes damage to the substrate, reduces the risk of embedding contaminants, and preserves the integrity of the material being cleaned. Additionally, there’s no secondary waste like sand or grit, which means cleanup is easier and more environmentally responsible.
  • Is it safe to use UHP cleaning on any surface?

    While UHP cleaning is versatile, it’s crucial to understand the material you’re working with. Some delicate or thin materials might be damaged by the high pressure. Always consult with an expert or test a small, inconspicuous area first to ensure the process won’t harm the surface.
  • What are the safety precautions one should take while using UHP cleaning systems?

    Operators should always wear protective equipment, including safety goggles, gloves, and protective suits. It’s essential to ensure that the equipment is in good working condition and to be aware of one’s surroundings to avoid accidental injury. Always read and follow the manufacturer’s safety guidelines and recommendations.

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