High-pressure pump (water jetting pump unit for industrial cleaning, surface preparation and hydrodemolition, 275 to 2,800 bar and above)
Water jetting pumps and units for industrial cleaning and surface preparation · triplex and quintuplex plunger pumps up to 2,800-3,000 bar, pressure conversion kits, power from flow and pressure, skid or trailer, EN 1829-1 safety
A high-pressure pump here is the water jetting pump and the unit built round it for industrial cleaning: a triplex or quintuplex plunger pump driven by an electric motor or diesel engine through a gearbox, on a skid or trailer, delivering water at hundreds to thousands of bar to lances, nozzles and cleaning tools. Ask three things first: what pressure and flow the cleaning job needs at the nozzle, what power that takes and whether the unit runs electric or diesel, and which safety standard the machine and its controls must meet.
Water jetting pumps and complete units for industrial cleaning, surface preparation, hydrodemolition and cutting, electric or diesel, skid-, trailer- or container-mounted. Plunger pump units for hot-mill descaling are covered on the High-pressure pump units for hot-mill descaling page; pulsation dampeners and drilling mud pumps have their own pages; household and commercial pressure washers up to 35 MPa are outside this page.
CNFX editorial research · Sources checked October 12, 2026 · 3 sources
NLB lists its water jetting pump series by pressure and flow: the 125 series at 6,000-40,000 psi (415-2,800 bar) and 3-32.5 gpm (15-125 lpm), the 225 at 4,000-40,000 psi and 6-82 gpm, the 605 at 4,000-40,000 psi and 18-200 gpm (68-757 lpm), and the 1005 at 4,000-20,000 psi (275-1,400 bar) and 56-333 gpm (211-1,262 lpm). It notes that "actual pump capacity is approximately 95% of the displacement" and gives the power as BHP = GPM × PSI / 1715. Its fluid cylinders are nickel-plated carbon steel with stainless valves, and older triplex and quintuplex units can be retrofitted with convertible pumps. [1]
Editorial calculation with NLB's formula: 10 gpm at 40,000 psi needs 10 × 40,000 ÷ 1,715 ≈ 233 hp at the pump; the same 233 hp at 10,000 psi would move about 233 × 1,715 ÷ 10,000 ≈ 40 gpm. The flows are assumed examples. [1]
Give the unit supplier the cleaning task and tools, nozzle pressure and flow, number of operators working at once, hose length, electric supply or diesel preference, skid, container or trailer mounting, water supply quality and inlet pressure, site temperature and noise limits, and the safety standard and controls required.
02
Skid, container or trailer, and the safety standard for jetting machines
WOMA builds individual high-pressure water jetting systems as skid units, in containers, on trailers, trucks or flat wagons, "with up to 3,000 bar, and approximately 1,700 l/min", driven by diesel engines or by electric motors for stationary use, with multi-consumer valves for "pressure surge-free, safe working with several consumers with one device", a Twin-Jet option running two pumps from one drive, and frequency-converter pressure control. [2]
EN 1829-1:2021 contains safety requirements for high pressure water jet machines "with drives of all kinds" for cleaning, surface preparation, material removal, readjustment of concrete and cutting, for mobile and fixed machines whose maximum working pressure exceeds the upper limit of EN 60335-2-79 (currently 35 MPa); high pressure cleaners under EN 60335-2-79 are outside it, and it covers ambient temperatures from 5 °C to 40 °C. [3]
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Compiled and source-reviewed by the CNFX editorial team.
Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review
· Page last updated 13 October 2026
Buyer questions
How is this different from a descaling pump unit?
This page covers water jetting pumps for cleaning and surface preparation; plunger units feeding hot-mill descaling headers are on the High-pressure pump units for hot-mill descaling page. [1][2]
How much power does a jetting pump need?
NLB gives BHP = GPM × PSI / 1715; 10 gpm at 40,000 psi works out at about 233 hp. [1]
What pressures are available?
NLB lists series up to 40,000 psi (2,800 bar); WOMA builds units up to 3,000 bar. [1][2]
Which safety standard applies?
EN 1829-1:2021 covers high pressure water jet machines above the 35 MPa limit of EN 60335-2-79. [3]
Sources and what still needs a direct check
Sources checked 2026-10-12. NLB publishes its water jetting pump series; WOMA describes its individual high-pressure units; the Estonian standards centre publishes the scope of EN 1829-1:2021.
