• Single acting
  • Single air drive head
  • Pressures to 4,500 bar (65,295 psi) 
  • They are suitable for use in zone 1, category 2G/2D IIC TX explosion-proof areas (Temperature class depending on medium temperature).


Examples of application for the G Series hydraulic pumps include:


  • Hydrostatic tests: Valves, tanks, pressure vessels, pressure switches, hoses, pipes & tubing, pressure gauges, cylinders, transducers, well casings, BOPs, gas cylinders and components from the Aerospace technology.
  • Burst and Cycle fatigue testing for parts mentioned above
  • Calibration: Pressure gauges and transducers
  • Water jet cutting and cleaning
  • Leak testing
  • Emergency shutdown systems for Oil & Gas Wells
  • Pressurisation of accumulators for testing numerous components
  • Operation and Control of well service and well head equipment


We specialise in custom System Design and manufacture to suit your requirements. You can see some of our range of systems in the below links:





Contact us for more information or let us size and design a system to suit your requirements.


Water or oil operation - G Series
General Information
Technical Data

G Pumps


  • single acting
  • single air drive head
  • Pressures to 4,500 bar (65,295 psi) 

G pumps have stainless steel bodies and plungers. All G pumps have polyurethane seals. For strictly water service, UHMWPE seal option is recommended. This seal is an option because the standard polyurethane seal provides significantly better service life in non-straight water applications. G pumps come standard with bottom inlet. Side inlet is available as option. Model G500(S) is only available with side inlet.


Options for G series


  • Seal material for oil use (standard pump): Order code: G35 – (L)
  • Seal material for water use: (not available for G500 and G500-2) Order code: G35 – (L)VE / G37D – VE
  • Special seal material to handle special fluids: Order code: See fluid compatibility guide
  • Side inlet (G500, G500-2 and G60 – G150 come standard with side inlet) Order code: G35(L) – S / G35(D)VE – S
  • Special inlet and outlet ports (i. e. NPT): Order code: G35 – NPT
  • Air control unit for G series with filter pressure regulator, control pressure gauge and shut-off valve: Order code: G35(L) with C2
  • To protect the pump against excessive outlet pressures, an air safety valve can be fitted to the air control unit: Order code: G35(L) with C2/SVair (The outlet pressure has to be indicated.)
  • Other options available on request.