HC4 – H – NG versions: 11 different intensification factors

PIN: 20 – 207 bar

PH: 500 bar maximum

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

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

Mounting: NG6 (D03) or NG10 (D05) stacking manifold system

Weight: NG6: 6.0 kg. / NG10: 6.2 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 HC4-H-NG is a variant of the HC4 for flange mounting with the topside closed and the P, T and A port open, not needing a top plate. It is designed for use in NG6 (D03) or NG10 (05) stacking manifold systems. The HC4-H-NG is ideal for use in applications where a higher volume of high-pressure fluid is required. The HC4-H-NG is a compact unit, but it delivers up to 16.3 l/min outlet flow.

Like the HC4, it raises supplied pressure and automatically compensates for consumption of oil to maintain the high pressure. Maximum outlet pressure is 500 bar in standard versions. Adjustments 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. The oil is fed through the connecting plate and the filter to the IN port of the HC4-H-NG flowing freely through check valves KV1, KV2 and DV to the high- pressure side H.

From the high-pressure side H oil is fed to port A on the connecting plate. 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 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 HC4-H-NG6


Function diagram HC4-H-NG10


Dimensions HC4-H-NG6

Dimension drawing 4-122-01

Dimensions HC4-H-NG10

Dimension drawing 4-126-01

Fluids and materials

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

Ordering an HC4-H-NG

Ordering example of an HC4 – H – NG  with i = 4.3, DV incorporated and NG6 (D03) manifold: HC4 – 4.3 – B – H – NG6

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

  • Dynamic – low hysteresis: Ordering example of an HC4-H-NG with i = 4.3 RV incorporated and NG6 (D03) manifold: HC4 – 4.3 – G – H – NG6
  • Fail safe – high hysteresis: The RV valve opening ratio is to be determined on individual basis. Contact our technical support. Ordering example of an HC4-H-NG with i = 4.3 RV with opening ratio x.x incorporated and NG6 (D03) manifold: HC4 – 4.3 – G – x.x – H – NG6


  • HC4

Intensification, i

  • Select factor
  • See flow rate table

Model version

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


  • Select manifold
  • H-NG6
  • H-HG10