High-pressure hydraulics

The term “high pressure” is usually used to refer to the pressure range above 450 bar. High pressure is primarily required in situations where heavy weights need to be moved or powerful movements need to be carried out with precision in tight spaces. High-pressure components can be used to build solutions with a high degree of weight and space optimisation. If a system can be expected to experience pressure peaks of up to 1000 bar, for example, high-pressure components are selected, as they can withstand these conditions without any problems. Not all typical hydraulic components are suited to high-pressure applications. We have put together a large selection using the HAWE Hydraulik modular system.

High-pressure pumps

The high-pressure pumps from HAWE Hydraulik are characterised by their compact and robust design. They are suitable for demanding applications and very high pressure levels. Models suited to the high-pressure range include radial piston pumps, air-driven hydraulic pumps and dual-stage pumps.

Radial piston pump type R

Thanks to the radial configuration of its small piston pump elements, the radial piston pump is suitable for generating pressures of up to 700 bar. The elements are arranged in multiple rings, which enables the pump to generate higher flow rates with lower pulsation.

Technical data

P_max: 700 bar
Q_max: 91.2 lpm
V_g: 64.18 cm³/rev

To product page: Radial piston pump type R

Air-driven hydraulic pump type LP

The type-LP pumps are valve-controlled, alternating plunger pumps based on the principle of a pneumatic-hydraulic pressure amplifier. Depending on the transmission ratio (surface ratio – hydraulic piston : pneumatic piston), they can attain hydraulic pressures of up to 630 bar at an air pressure of 6 bar, for example.

Technical data

p_{hydraulic max}: 1500 bar
p_{air max}: 10 bar
Q_max: 12 lpm

To product page: Hydraulic power pack type LP

Dual-stage pump type RZ

If you want to combine speed with powerful movements (rapid traverse – creeping), a compact, dual-stage system is the right choice for your application. A gear pump feeds the system with a high delivery flow at low pressure, and a radial piston pump with high pressure but a low delivery flow. The two pumps and flanged directly onto one another to form a compact unit.

Technical data

P_max: 700 bar
Q_max: 91.2 lpm
V_g: 64.18 cm³/rev

To product page: Dual-stage pump type RZ

Pump element type PE

The pump elements form the basis of the radial piston pump. When working in extremely tight spaces, they can also be installed separately. This allows the user to build almost any form of high-pressure system imaginable.

Technical data

P_max: 700 bar
Q_max: 4.2 lpm
V_max: 1.52 cm³/rev

Product data sheet: Pump element types MPE and PE

Double pump element type DMPE

The double pump element type DMPE integrates both a low-pressure and a high-pressure piston. As soon as the low-pressure limit is reached, an in-built valve depressurises the low-pressure piston. Multistage pumps which can be adapted to a variety of demands can be designed by the user.

Technical data

P_max: 700 bar
Q_{max HP}: 0.2 l/min
Q_{max LP}: 0.65 l/min
V_max: 0.46 cm³/rev

Product data sheet: Double pump element type DMPE

High-pressure valves

Many directional valves for high-pressure applications are designed as seated valves. These are zero-leakage and completely resistant to fluid contamination. The HAWE product range also includes other types of valve that allow you to safeguard or regulate the system pressure.

Valve bank (directional seated valve) type VB

The valve bank type VB consists of several directional seated valves, connected in parallel. As a ball valve, it is tightly sealed with zero leakage in the closed state. 2/2, 3/2, 4/2, 3/3 and 4/3 directional seated valves can be provided. The valve bank can be fitted directly onto hydraulic power packs with connection blocks.

Technical data

P_max: 700 bar
Q_max: 120 l/min

To product page: Valve bank type VB

Directional seated valve type G

This is a zero-leakage, ball seated valve. 2/2, 3/2, 4/2, 3/3 and 4/3 way functions are available. A suitable connection block makes a direct pipeline connection possible. The directional seated valves can also be provided as chained valves in a valve bank type VB.

Technical data

P_max: 700 bar
Q_max: 120 l/min

To product page: Directional seated valve type G

Directional seated valve type NBVP

This is a zero-leakage, cone-seated valve. 2/2, 3/2, 4/2 and 4/3 way functions can be provided. Equipped with the NG6 (Cetop 3) standard connection pattern, the NBVP allows operating pressures of up to 400 bar. Additional options such as position monitoring and a 12 W solenoid are also available.

Technical data

P_max: 400 bar
Q_max: 20 l/min

To product page: Directional seated valve type NBVP

Directional seated valve type BVP17

The BVP17-type directional seated valve can be operated as a 2/2, 3/2, 4/2 or 4/3-way valve at operating pressures of up to 700 bar. Direct actuation options include electro-magnetic, pneumatic and manual (hand lever).

Technical data

P_max: 700 bar
Q_max: 20 lpm

To product page: Directional seated valve type BVP 17 L

Pressure control valves type MV

Pressure-limiting valves reliably protect the hydraulic system from being subjected to excessive system pressure. The MV type comes in a wide range of designs and pressures of up to 1000 bar for the high-pressure range.

Technical data

P_max: 700 bar
Q_max: 160 lpm

To product page: Pressure control valves type MV

Proportional pressure-limiting valve type PMV

This valve can be actuated using electric proportional control. It is used for pressure limitation, and also to limit the load pressure on the actuators in the system. It is available as a manifold mounting and as a piping insert valve.

Technical data

P_max: 700 bar
Q_max: 120 lpm

To product page: Proportional pressure-limiting valve type PMV

Releasable check valve type RHC

The RHC-type check valve is available as an insert valve in 6 different sizes. Thanks to its range of pilot ratios and optional hydraulic release, it can be used in similar applications to load-holding valves.

Technical data

P_max: 700 bar
Q_max: 200 lpm

To product page: Releasable check valve type RHC type RHC

System solutions

Here at HAWE Hydraulik, we can configure custom system solutions quickly and easily using our modular system. If our modular system doesn’t cover what you need, an experienced HAWE engineering team is ready to provide comprehensive assistance with your project, from consultation, design, installation and on-site commissioning to maintenance during operation. You can see a small selection of our range of products below:

Compact hydraulic power pack type KA

The KA-type compact hydraulic power pack is designed for intermittent operation. Its housing contains a tank, an oil-immersed motor, and a high-pressure or dual-stage pump. Valve banks of types BA and VB can be mounted directly on it to form an incredibly compact system solution.

Technical data

P_max: 700 bar (radial piston pump), 180 bar (gear pump)
Q_max: 7 lpm (radial piston pump); 24.1 lpm (gear pump)
V_{usable max}: 30 l

To product page: Compact hydraulic power pack type KA

Compact hydraulic power pack type HKL

The compact hydraulic power pack type HKL enables you to work in both intermittent and continuous operation. Here too, it is possible to mount valve banks of types BA and VB directly on the power pack. This type of power pack is used primarily for hydraulic tools.

Technical data

P_max: 700 bar (radial piston pump), 180 bar (gear pump)
Q_max: 13 lpm (radial piston pump); 24 lpm (gear pump)
V_{usable max}: 11.1 l

To product page: Compact hydraulic power pack type HKL

Standard power pack type FXU

For applications with more demanding flow rate requirements, the standard power pack type FXU is the perfect choice. Thanks to its simple modular configuration, it is available with many options as standard, including high-pressure functions.

Technical data

P_max: 700 bar (HP); 280 bar (LP)
Q_max: 64 lpm (HP); 80 lpm (LP)
V_{t max}: 560 l

To product page: Hydraulic power pack type FXU

SYSTEC

HAWE Hydraulik’s Engineering and Installation team will help you with any problem, from application-specific manifolds to entire systems. We have already produced countless successful projects, including in the high-pressure range. Click here to find out more about SYSTEC solutions.

Technical data

P_max: 700 bar
Q_max: 500 lpm

To product page: SYSTEC solutions

If you have any enquiries about the products shown here, please contact: sales partner.