HC72W versions: 10 different intensification factors

PIN: 20 – 207 bar

PH: 2,000 bar maximum for media > 5 cSt (mm2/s)

PH: 1,035 bar maximum for media < 5 cSt (mm2/s)

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
G model = direct proportionally controlled

Material certificate 3.1 on request


The HC72W is a very compact high-pressure miniBOOSTER stainless steel 316L unit capable of delivering pressure up to 2,000 bar weighing only 2.5 kg. It is ideal for use in a variety of applications where building and maintaining high pressure is required.

The HC72W raises supplied pressure to a higher outlet pressure and automatically compensates for media consumption to maintain the high pressure.

The HC72W incorporates a Pressure Reducing Valve (PRV) to control inlet pressure to the booster section, and an optional orifice to reduce inlet flow to the maximum allowed for the intensification ratio selected.

The integrated Pressure Reducing Valve (PRV) protects both booster and high-pressure tool against too high pressure. It secures a stable high pressure regardless of changes in the tank line pressure.

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 PRV (pos. 5) and 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 end pressure on 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-128-01

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 HC72W

Ordering example of an HC72W with i = 13.0, H1 M22 x 1.5 and H2 9/16-18 UNF, DV incorporated and BSPP connections:

HC72W – 13.0 – B – 12 for media < 5 cSt (mm2/s) tested in water
HC72W – 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.

The G-model is available in 2 variants, when ordering please specify accordingly:

  • Dynamic – low hysteresis: Ordering example of an HC72W with i = 13.0 RV incorporated, H1 M22 x 1.5 and H2 9/16-18 UNF and BSPP connections: HC72W – 13.0 – G – 12
  • Fail safe – high hysteresis: The RV valve opening ratio is to be determined on individual basis. Contact our technical support. Ordering example of an HC72W with i = 13.0 RV with opening ratio x.x incorporated, H1 M22 x 1.5 and H2 9/16-18 UNF and BSPP connections: HC72W – 13.0 – G – x.x – 12


  • HC72W

Intensification, i

  • Select factor
  • See flow rate table

Model version

  • Select type
  • A = without DV
  • B = with DV
  • G = with proportional valve


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

  Ordering codeIN / RH1H2H3
  HC72W-___-__-111/4" BSPPM22 x 1.5--
  HC72W-___-__-121/4" BSPPM22 x 1.59/16-18 UNF-
  HC72W-___-__-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