HC7W-FF 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: Flange, manifold system miniBOOSTER pattern

Weight: 2.0 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 HC7W-FF is a very compact high-pressure miniBOOSTER stainless steel 316L unit capable of delivering pressure up to 2,000 bar weighing only 2.0 kg. The HC7W-FF is a variant of the HC7W for flange mounting on both high- and low pressure side. The entire pattern is a miniBOOSTER design. It is ideal for use with very thin (low viscosity) medias and for use in various applications like on power packs.

The HC7W-FF raises supplied pressure to a higher outlet pressure and automatically compensates for consumption of oil to maintain the high pressure. Adjustment of the outlet pressure is carried out by varying the supplied 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 CV to the IN port, flowing freely through the check valves KV1, KV2 and DV to the high-pressure side H. In this condition, maximum flow through the booster is achieved, giving a fast-forward function.

When pump pressure is reached on the high-pressure side H, valves KV1, KV2 and DV 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




Connection types

ConnectionIN / RH

Fluids and materials

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

Ordering an HC7W-FF

Ordering example of an HC7W-FF with i = 13.0, H, IN and R flanged and H2: 9/16-18 UNF and DV incorporated:

HC7W – 13.0 – B – FF2 for media < 5 cSt (mm2/s) tested in water

HC7W – 13.0 – B – FF2S for media > 5 cSt (mm2/s) tested in hydraulic oil

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

  • Dynamic – low hysteresis: Ordering example of an HC7W-FF with i = 13.0 RV incorporated, H, IN and R flanged and H2: 9/16-18 UNF : HC7W – 13.0 – G – FF2S
  • Fail safe – high hysteresis: The RV valve opening ratio is to be determined on individual basis. Contact our technical support. Ordering example of an HC7W with i = 13.0 RV with opening ratio x.x incorporated, H, IN and R flanged and H2: 9/16-18 UNF: HC7W – 13.0 – G – x.x – FF2S


  • HC7W

Intensification, i

  • Select factor
  • See flow rate table

Model version

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


  • Select thread
  • FF_   = BSPP, media < 5 cSt
  • FF_S = BSPP, media > 5 cSt

  Ordering codeIN / RH1H2H3
  HC7W-___-__-FF2FlangeFlange9/16-18 UNF-
  HC7W-___-__-FF3FlangeFlange9/16-18 UNF9/16-18 UNF