Hughes Pumps HP40 Pump | High Pressure Seawater Pump up to 1000 Bar

The Hughes Pumps HP40 Pump is a high pressure plunger pump designed for demanding seawater and industrial pressure applications. Rated up to 1000 bar at 16 lpm and capable of flows up to 103 lpm at 160 bar, the HP40 gives operators a versatile solution where high pressure water delivery and robust pump construction are required.

Built with a 316 stainless steel pump head for seawater applications, the HP40 is suited to harsh marine and offshore environments where corrosion resistance is important. An optional 431 stainless steel pump head is also available, allowing the pump to be configured to suit different operating requirements.

The pump is available with a choice of gear ratios to suit either diesel engine or electric motor drive arrangements. For compact installations, an SAE adaptor housing in SAE 3, 4 or 5 can be supplied for flange mounting to a diesel engine flywheel housing. This provides a compact, aligned installation while enclosing moving parts. The HP40 can also be supplied as a bareshaft pump only or as part of a complete unit build.

Internally, the HP40 uses an in-line valve arrangement for high efficiency and to reduce the adverse effects of cyclic stress in the pump head. It also features interchangeable plunger kits, a hardened alloy steel crankshaft, heavy duty roller main bearings, an SG iron crankcase with splash lubrication, and forged connecting rods with shell type big end bearings and lead bronze lined small end bushes. The pump is gear driven, removing the need for belt drive.

The unit may be supplied with options such as a pressure gauge, safety valve or burst disc, and solid ceramic or hard coated stainless steel plungers with self-adjusting seals. The datasheet also highlights strong seal, plunger, and valve service life, helping support dependable operation in high pressure duty cycles.

Key Features

• Maximum pressure up to 1000 bar

• Maximum flow up to 103 lpm

• Maximum power 30 kW / 40 HP

• 316 stainless steel pump head for seawater applications

• Optional 431 stainless steel pump head

• Choice of gear ratio for diesel engine or electric motor drive

• Optional SAE adaptor housing for compact engine mounting

• Available as bareshaft pump or complete unit build

• In-line valve arrangement for efficiency and reduced cyclic stress

• Interchangeable plunger kits

• Hardened alloy steel crankshaft

• Heavy duty roller main bearings

• SG iron crankcase with splash lubrication

• Gear driven design

• Optional pressure gauge

• Optional safety valve or burst disc

• ATEX compliant

Typical Applications

The Hughes Pumps HP40 Pump is suitable for a range of high pressure duties, including:

• High pressure seawater pumping

• Offshore and marine pressure systems

• Industrial high pressure water applications

• Engine driven or motor driven pump packages

• Applications requiring compact flange-mounted pump arrangements

• Systems requiring variable pressure and flow combinations across different plunger sizes and gear ratios

Why Choose the Hughes Pumps HP40 Pump?

The HP40 offers a broad operating window, allowing users to configure the pump for either higher pressure or higher flow depending on the plunger size and gear ratio selected. This makes it suitable for integrators and operators who need flexibility across a range of duties rather than a single fixed operating point.

Its seawater-compatible materials, compact drive options, and heavy duty mechanical construction also make it well suited to offshore, marine, and industrial installations where reliability and service life matter.

Technical Specification

Performance Range

The performance table on page 2 shows multiple configurations depending on plunger diameter, gear ratio, and input speed. The available plunger diameters are 14 mm, 18 mm, 22 mm, 25 mm, 30 mm, and 35 mm, with maximum pressure reducing as plunger size increases and flow rising accordingly.

Example Operating Points

These figures are taken from the upper range of the performance table and represent the pump’s broad operating envelope shown on page 2. The datasheet notes that flowrates are theoretical and reduce by approximately 7.5% at full pressure, with a 45 mm pump stroke.

Frequently Asked Questions

What is the maximum pressure of the Hughes Pumps HP40 Pump?

The HP40 is rated up to 1000 bar at 16 lpm.

What is the maximum flow of the HP40?

The maximum listed flow is 103 lpm at 160 bar.

Is the HP40 suitable for seawater use?

Yes. The standard pump head is 316 stainless steel for seawater applications.

Can the pump be driven by either an engine or an electric motor?

Yes. The HP40 is available with a choice of gear ratio to suit diesel engine or electric motor drive.

Is there a compact engine mounting option?

Yes. An SAE adaptor housing is available in SAE 3, 4 or 5 for flange mounting to a diesel engine flywheel housing.

Is the HP40 available as a pump only or as a package?

Yes. It can be supplied as a bareshaft pump only or as a complete unit build.

What materials and design features support durability?

The pump uses an in-line valve arrangement, hardened alloy steel crankshaft, heavy duty roller main bearings, SG iron crankcase, and forged connecting rods. Optional ceramic or hard coated stainless steel plungers are also available.

Is the Hughes Pumps HP40 Pump ATEX compliant?

Yes. The datasheet lists the HP40 as ATEX compliant.

Enquire about the Hughes Pumps HP40 Pump

For technical details, pricing, or project support:

Email: info@isubc.com

Phone: +44 (0)1253 767788

Hughes Pumps HP40 Pump | High Pressure Seawater Pump up to 1000 Bar

The Hughes Pumps HP40 Pump is a high pressure plunger pump for seawater and industrial applications, delivering up to 1000 bar and 103 lpm with stainless steel pump head options and compact engine or motor drive configurations

Product SKU: HP40 Pump

Product Brand: Hughes Pumps