HC9D2W versions: 5 different intensification factors

PIN: 20 – 207 bar

PH: 1,380 bar maximum

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

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

Drain connections: Max. 10 bar

Mounting: Inline tube

Weight: 25.0 kg.


Model version:

A model = no dump valve

Material certificate 3.1 on request


The HC9D2W is a dual media miniBOOSTER stainless steel 316L unit which is capable of delivering up to 6.5 l/min flow on the high pressure end. Like other miniBOOSTER models, the HC9D2W 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. Relative to its flow capability, the HC9D2W is a compact unit weighing 25 kg.

Flow rates

Intensification factor
Max. intensified outlet flow
Max. inlet flow


The basic operation is illustrated in the function diagram. Media 1 is fed through the IN port flowing freely through the bistable valve BV1 driving the LP pistons. From the suction inlet IN Media 2 is drawn through the check valves 2 x KV1, and pumped through the 2 x KV2 to the high-pressure side H. In this condition maximum flow through the booster is achieved giving a fast-forward function.

The unit will automatically stall when end pressure on high-pressure side H is reached. If a pressure drop on the high-pressure side exists due to consumption or leakage, the HP1 and HP2 units will automatically operate to maintain the end pressure.

Function diagram



Dimension drawing 9D2W-120-06

Connection types

ConnectionIN / RH1 / H2S1 / S2D1 / D2
11/2" BSPPM30 x 1.51/2" BSPP1/8" BSPP

High-pressure adapters

High-pressure adapter ordering codes and specifications are shown in the PDF-file: 6DW-900-02

Dynamic seals

CodeSeal material media 1 / 2Outlet pressure
HHH-PUR / H-PURMax 1,380 bar HP
HPH-PUR / PEEKMax 1,380 bar HP
EEEPDM / EPDMMax 500 bar HP
EPEPDM / PEEKMax 1,380 bar HP

Fluids and materials

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

Ordering an HC9D2W

Ordering example of an HC9D2W with i = 7.1, with BSPP connections and H-PUR seals:

HC9D2W – 7.1 – A – 1HH

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



  • HC9D2W

Intensification, i

  • Select factor
  • See flow rate table

Model version

  • Select type
  • A = without DV


  • Select thread
  • 1 = BSPP

Dynamic seals

  • Select seal type
  • See dynamic seal table

Max. tightening torque BSPP

IN / RS1 / S2D1 / D2
1/2" BSPP1/2" BSPP1/8" BSPP
with stainless steel washer13.0 da/Nm13.0 da/Nm2.0 da/Nm