HC75W versions: 10 different intensification factors

PIN: 20 – 207 bar

PH: 2,000 bar maximum

PRETURN: As low as possible (return pressure to tank)

POUTLET: PH = (PIN – PRETURN) x intensification factor

Mounting: Inline tube

Weight: 2.5 kg.

Model versions:

A model = no dump valve
B model = with dump valve

Material certificate 3.1 on request


The HC75W is a very compact high-pressure miniBOOSTER stainless steel 316L unit weighing only 2.5 kg. It is ideal for use in a variety of applications where building and maintaining high pressure is required.

The HC75W incorporates a counterbalance valve (external parts in stainless steel), which allows fast-forward movement of a cylinder by directing the full inlet flow to pass directly through the booster section until the set pressure has been reached. Then the counterbalance valve opens, and the booster starts oscillating.

The HC75W booster will automatically stall when the high-pressure side H is reached. The booster will continuously compensate for media consumption to maintain the high pressure. Adjustment of the outlet pressure is carried out by varying the supplied pressure.

An optional orifice can be mounted in the R-port of the booster to prevent overspeeding.

Flow rates

Intensification factor
Max. intensified outlet flow
Max. inlet flow


The basic operation is illustrated in the function diagram. Media is fed through the directional valve (in the customer system) to the IN port, flowing freely through the internal check valves to the high-pressure side H.

When pump pressure is reached on the high-pressure side H, the internal check valves will close. The end pressure will be achieved by the oscillating pump unit OP. The unit will automatically stall when the high-pressure side H is reached. If a pressure drop on the high-pressure side exists due to consumption or leakage, the OP valve will automatically operate to maintain the end pressure.

Function diagram



Dimension drawing 7W-129-01

Connection types

ConnectionIN / R H1H2H3
111/4" BSPPM22 x 1.5--
121/4" BSPPM22 x 1.59/16-18 UNF-
131/4" BSPPM22 x 1.59/16-18 UNF9/16-18 UNF

High-pressure adapters

High-pressure adapter ordering codes and specifications are shown in the PDF-file: 7W-900-08

Fluids and materials

Additional information is available on the website under Products → General specifications.

Ordering an HC75W

Ordering example of an HC75W with i = 13.0, H1 M22 x 1.5 and H2 9/16-18 UNF, DV incorporated and BSPP connections:

HC75W – 13.0 – B – 12S for media > 5 cSt (mm2/s) tested in hydraulic oil

Attention notes!
High-pressure adapter is required, please specify ordering code – see high-pressure adapter table.
High-pressure adapters will be factory mounted.

Valve pre-setting is required, please specify when ordering the intensifier.



  • HC75W

Intensification, i

  • Select factor
  • See flow rate table

Model version

  • Select type
  • A = without DV
  • B = with DV


  • Select thread
  • See table below
  • 1_S = BSPP, media > 5 cSt

  Ordering codeIN / RH1H2H3
  HC75W-___-__-111/4" BSPPM22 x 1.5--
  HC75W-___-__-121/4" BSPPM22 x 1.59/16-18 UNF-
  HC75W-___-__-131/4" BSPPM22 x 1.59/16-18 UNF9/16-18 UNF

Max. tightening torque BSPP

IN / R
1/4" BSPP
with stainless steel washer4.0 da/Nm