Bladder type hydro pneumatic accumulators / pulsation dampeners, made of carbon steel or stainless steel AISI 304L/316L, welded construction. The advantage of this series is the simplicity of the bladder replacement through the disassemble of the top flange.

Technical Features:

  • Maximum working pressure (PS): 14 bar 
  • Test Pressure (PT): PS x 1,43 / 1,3 / 1,5 
  • Material: carbon steel / stainless steel Working temperature (TS): -20°C to +80°C 
  • Standard bladder: can be used with mineral oils and non corrosive fluids
  • Installation: vertical (nitrogen valve upward) 

Compression ratio:

  • recommended: P2/P0 = 2.5
  • maximum: P2/P0 = 4

Mechanical life: the number of cycles is inversely proportional to the increase of the compression ratio. For pulsation dampener applications, the nitrogen value must be from 60% to 80% of the working pressure also in relation with the type of pump and the working temperature

  • Outside epoxy painted as per standard FOX procedure or as project specification
  • Bladders in HNBR, NBR, FPM, Polyurethane
  • Connection with flange SAE 3000 – SAE 6000, ANSI B16.5 or UNI/DIN
  • Special connection on request
  • HGX series in AISI 304L/316L
  • High pressure version till 25 barg
  • Volume up to 5000 litres


HG100 - HG150 - HG200 - HG250 - HG300 - HG350 - HG400 - HG450 - HG500 - HG1000

Hydraulic Systems and Components