Hughes Pumps: high pressure plunger pumps and water jetting units

Supply of Hughes Pumps high pressure triplex plunger pumps and turnkey water jetting packages. Matching operating pressures up to 2800 bar and flow rates up to 425 lpm for industrial applications.

Hughes HP40 high pressure plunger pumps

Compact triplex high-pressure plunger pump designed for tube bundle cleaning, vessel washing, surface preparation and hydrostatic pipeline pressure testing. Rated at 30 kW (40 HP) input power.

Built for demanding heavy-duty continuous industrial service featuring an integrated reduction gearbox for direct mounting to electric motors or diesel engines without belt drives.

Maximum operating pressure: 1000 bar at 16 lpm
Maximum flow capacity: 103 lpm at 160 bar
Input power rating: 30 kW (40 HP), internal gearbox
Splash lubricated crankcase, twin heavy-duty roller bearings

Hughes HP65 high pressure plunger pumps

Versatile triplex plunger pump rated at 48 kW (65 HP) engineered for industrial mobile water jetting rigs, shipboard cleaning and plant surface treatment.

Delivers an optimum combination of high discharge pressure and volumetric flow to remove hard mill scale, epoxy marine coatings, bitumen deposits and concrete slurry with minimal maintenance downtime.

Maximum operating pressure: 1000 bar at 27 lpm
Maximum flow capacity: 103 lpm at 250 bar
Input power rating: 48 kW (65 HP), ductile SG iron crankcase
In-line valve arrangement, solid ceramic or carbide plungers

Hughes HP120 high pressure plunger pumps

Heavy-duty triplex plunger pump rated at 90 kW (120 HP) with pressure capabilities up to 1400 bar, specifically designed for petrochemical bundle cleaning, refinery distillation column washing and offshore drill pipe descaling.

Rigid pump heads cast in 431 or duplex stainless steel resist cyclic hydraulic stresses and severe marine environments.

Maximum operating pressure: 1400 bar at 35 lpm
Maximum flow capacity: 277 lpm at 175 bar
Input power rating: 90 kW (120 HP), forged alloy steel crankshaft
Self-adjusting high pressure packings with spring preloading

Hughes HP220 high pressure plunger pumps

High-power triplex plunger pump rated at 160 kW (220 HP) engineered for heavy-duty civil hydrodemolition, abrasive cutting systems, bitumen coating strip-off and industrial washdown plants.

Equipped with full-flow forced pressure lubrication system including integrated lube pump, spin-on oil filter and dedicated liquid-to-liquid oil cooler.

Maximum operating pressure: 1400 bar at 62 lpm
Maximum flow capacity: 277 lpm at 310 bar
Input power rating: 160 kW (220 HP), forced lubrication with oil cooling
Steel backed white metal plain bearings between every connecting rod

Hughes HP300 high volume plunger pumps

High-capacity triplex plunger pump delivering 225 kW (300 HP) input rating with flow rates up to 484 lpm, developed for steel mill descaling, centralized foundry casting knockout, subsea pipeline injection and multi-gun industrial cleaning networks.

Engineered for multi-year 24/7 continuous duty cycles under harsh factory conditions.

Maximum operating pressure: 1400 bar at 77 lpm
Maximum flow capacity: 484 lpm at 250 bar
Input power rating: 225 kW (300 HP), heavy torque transmission
Forged steel connecting rods with lead bronze small end bushes

Hughes HP500 flagship high pressure plunger pumps

Extra heavy-duty flagship triplex plunger pump boasting 375 kW (500 HP) input power and an impressive maximum discharge volume of 806 lpm (over 48 m³/h) at pressures reaching 1400 bar.

Deployed on heavy steel descaling lines, secondary oil recovery water injection systems, large-scale dam hydrodemolition and supertanker hull cleaning in dry docks.

Maximum operating pressure: 1400 bar at 129 lpm
Maximum flow capacity: 806 lpm (48.3 m³/h) at 250 bar
Input power rating: 375 kW (500 HP), reinforced power frame
SAE direct flange adaptors for large industrial diesel engines

Hughes Ultrabar 30 ultra high pressure plunger pumps

Dedicated ultra-high pressure (UHP) plunger pump operating at pressures up to 2800 bar (40,600 psi) with 160 kW (220 HP) input power.

Designed for precision cold abrasive waterjet cutting of titanium, high-tensile steels and composites, thermal barrier ceramic coating stripping, autoclave decontamination and vibration-free micro-crack-free hydrodemolition.

Operating pressure: up to 2800 bar at 30 lpm
Flow capacity at 2000 bar: 44 lpm (160 kW / 220 HP power)
Solid ultra-fine grain tungsten carbide plungers
Pneumatically actuated UHP dump valves rated for 2800 bar

Hughes Pumps spare parts, repair kits and valves

Genuine factory replacement parts, overhaul kits and fluid-end valves for routine maintenance and rebuilding of Hughes pump systems.

The spare inventory encompasses solid tungsten carbide and ceramic plungers, high and low pressure self-adjusting packing sets, in-line suction and discharge valve assemblies with lapped seats, crankshafts, connecting rod bearings, and diverter valves rated to 2800 bar.

Tungsten carbide and alumina ceramic plungers for all bore sizes
Self-adjusting high-pressure packing seal kits with support rings
In-line stainless steel suction and discharge valve cartridges
Diverter valves (2800 bar) and pneumatic pressure unloader valves

Engineering features of Hughes high pressure fluid ends and in-line valves

The fluid-end pump heads of Hughes Pumps are precision-machined from high-strength martensitic chromium stainless steel grade 431, vacuum heat-treated to eliminate internal stresses and enhance fatigue resistance.

For marine offshore platforms, coastal shipyards and process plants handling mineralized or saline water, heads are manufactured from AISI 316 austenitic stainless steel or super duplex stainless steel, guaranteeing superior pitting and crevice corrosion resistance.

A paramount technical advantage of Hughes pump design is the proprietary in-line suction and discharge valve arrangement situated along the common plunger axis. In traditional cross-bore fluid heads, intersecting pressurized channels generate cyclic stress peaks that provoke fatigue cracking.

The Hughes in-line coaxial geometry guides hydraulic forces linearly, eliminating stress concentration notches and delivering volumetric efficiency exceeding 95 percent up to 2800 bar.

Solid tungsten carbide plungers and self-adjusting dynamic packing seals

Plungers across the Hughes Pumps lineup are fabricated as solid cylindrical rods from ultra-fine grain tungsten carbide or high-density alumina ceramic.

Unlike ceramic-coated plungers which can suffer from coating flaking under violent pressure shocks, solid carbide plungers provide uniform microstructure, maximum fracture toughness, and an ultra-smooth ground finish below Ra 0.05 microns.

The high-pressure dynamic seal assembly utilizes self-adjusting packing seals preloaded by internal stainless steel disc springs.

This continuous spring energization automatically compensates for minor lip wear and thermal expansion, relieving site technicians from routine manual packing gland readjustment, while integrated drain ports protect the power end from wash fluid ingress.

Power end construction, full-flow lubrication and integrated gearboxes

The power frame of Hughes Pumps is cast from high-grade spheroidal graphite ductile iron (SG iron), providing optimal rigidity, shock damping and acoustic noise attenuation.

The drop-forged alloy steel crankshaft is supported by heavy-duty cylindrical roller main bearings, with additional white metal plain bearings between every connecting rod on HP220, HP300 and HP500 models.

Pumps rated at 160 kW and above feature an integral gear-driven oil pump supplying full-flow pressurized lubrication through a spin-on filter and water-to-oil plate cooler.

Built-in helical reduction gearboxes offer selectable gear ratios to match diesel engines (1500 to 2100 rpm) or electric motors (1000 to 1500 rpm) without belt drives.

Turnkey water jetting packages: diesel and electric powered configurations

Hughes Pumps designs and manufactures fully integrated water jetting packages powered by industrial diesel engines (Deutz, Perkins, Cummins, Volvo Penta) or three-phase electric motors with standard or explosion-proof ATEX / IECEx certification for hazardous industrial environments.

Units can be mounted on channel steel skids for stationary plant installations, tubular crashframes for construction site handling by crane, or highway-legal road trailers.

For offshore drilling rigs and platforms, Hughes delivers certified containerized systems built in strict accordance with DNV 2.7-1 / EN 12079 standards.

Ultra-high pressure valves, diverters and operational safety systems

Operating safely at pressures up to 2800 bar requires severe duty flow control valving with high safety factors.

Hughes Pumps manufactures pneumatic and manual diverter valves rated to 2800 bar, allowing operators to instantly divert the high-velocity water stream into an atmospheric bypass line when releasing the lance trigger.

Pneumatic pressure regulating unloader valves allow seamless stepless pressure adjustment from zero to full rating without stopping the prime mover.

Every pump discharge manifold is fitted with high-precision bursting disc assemblies or spring-loaded safety relief valves tested to 1.5 times the maximum rated working pressure.

Availability, price, delivery lead time and technical compliance are confirmed for each specific order enquiry. This page does not replace official factory test reports and operating manuals.