vertical micro power pack

Micro Pack

Delivering up to 5LPM from an 87mm body

HPR Reversible Power packs and HPU Uni-directional hydraulic Power pack for single and double acting actuators

standard hydraulic power pack

Standard Unit

Hydraulic Power units up to 55kW

Applications include:- Injection moulding machines, Auger Drives, Concrete moulding, Test Rigs and Drilling Rigs

vertical mini power pack

Mini Pack

AC and DC system to 30LPM DC Power packs for Tipper trucks, Tail lifts, Recovery Lifts and Trailer ramps etc AC Power pack hydraulics for Scissor lifts, Car lifts, Dock Levelers and Security barriers etc

Oil Pipe Diameter

A guide to the appropriate sizing of Hydraulic pipes can be carried out here. It should be noted that the purpose of the pipe must be known, is it Suction Pipe, Return Pipe or Pressure Pipe? A guide to “normal” fluid speeds within these types of pipes are shown below. Calculated values for Fluid Speed v (m/s) should fall within these ranges.

To calculate Fluid Speed v(m/sec), you must enter the following figures:-

  1. Diameter d(mm), this is internal pipe diameter.
  2. Pump Flow Q(lpm)

Then press v to calculate, this will be shown in the result box.

Diameter (d) mm
Fluid Speed (v) m/sec
Pump Flow (Q) l/min

Calculate Q Calculate d
Calculate v    
Pipe/connection TypeSpeed Possible Speed values
Suction Pipev from 0,5 to 1 m/sec
Return Pipev from 1,25 a 3 m/sec
Pressure Pipev 3,25 m/sec for Pressure up to 100 Bar
Pressure Pipev From 3,5 to 5 m/sec for Pressure up to 150 Bar
Pressure Pipev From 5,25 to 7 m/sec for Pressure up to 200 Bar
Pressure Pipev From 7,25 to 9 m/sec for Pressure up to 350 Bar


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