To maintain system performance HYDAC recommends that the gas precharge pressure is checked regularly. The inevitable loss of gas precharge pressure due to permeability will change the system effectiveness (performance) and could cause damage to the bladder, diaphragm, or piston accumulator.
HYDAC charging and gauging units allow hydro-pneumatic accumulators to be precharged with dry nitrogen. For these purposes, a charging and gauging unit is connected to a commercially available nitrogen bottle via a flexible charging hose.
These units also allow maintenance personnel to check the current gas precharge pressure of an accumulator. For critical systems, consider the use of a permanent gauging block which will provide for continuous monitoring.
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Part Number

Model Code Description

Gauge / Gas Pressure [Max]

Charging Hose Length

Adapter / Country

Additional Adapter Type

Core Products

N/A FPS 10 F2.5 G2 K N/A 10 bar145 psi N/A 8 ft2.5 m N/A G2 / Great Britain G2 / India N/A
N/A FPS 10 F2.5 G4 K N/A 10 bar145 psi N/A 8 ft2.5 m N/A G4 / USA (CGA 580) N/A
N/A FPS 10 F2.5 G6 K N/A 10 bar145 psi N/A 8 ft2.5 m N/A G6 / Japan N/A
N/A FPS 10 F2.5 G8 K N/A 10 bar145 psi N/A 8 ft2.5 m N/A G8 / Brazil G8 / Columbia G8 / Peru N/A
N/A FPS 10 F4 G4 K N/A 10 bar145 psi N/A 13 ft4 m N/A G4 / USA (CGA 580) N/A
N/A FPS 100 F10 G4 K N/A 100 bar1400 psi N/A 10.0 m N/A G4 / USA (CGA 580) N/A
N/A FPS 100 F2.5 G10 K N/A 100 bar1400 psi N/A 8 ft2.5 m N/A G10 / Russia G10 / Venezula N/A
N/A FPS 100 F2.5 G2 K N/A 100 bar1400 psi N/A 8 ft2.5 m N/A G2 / Great Britain G2 / India N/A
N/A FPS 100 F2.5 G4 K N/A 100 bar1400 psi N/A 8 ft2.5 m N/A G4 / USA (CGA 580) N/A
N/A FPS 100 F2.5 G7 K N/A 100 bar1400 psi N/A 8 ft2.5 m N/A G7 / South Korea N/A
N/A FPS 100 F2.5 G9 K N/A 100 bar1400 psi N/A 8 ft2.5 m N/A G9 / Taiwan N/A
N/A FPS 100 F4 G1 K N/A 100 bar1400 psi N/A 13 ft4 m N/A G1 / Germany N/A
N/A FPS 100 F4 G4 K N/A 100 bar1400 psi N/A 13 ft4 m N/A G4 / USA (CGA 580) N/A
N/A FPS 25 F2.5 G1 K N/A 25 bar350 psi N/A 8 ft2.5 m N/A G1 / Germany N/A
N/A FPS 25 F2.5 G4 K N/A 25 bar350 psi N/A 8 ft2.5 m N/A G4 / USA (CGA 580) N/A
N/A FPS 25 F4 G4 K N/A 25 bar350 psi N/A 13 ft4 m N/A G4 / USA (CGA 580) N/A
N/A FPS 250 F2.5 G1 K N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G1 / Germany N/A
N/A FPS 250 F2.5 G10 K N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G10 / Russia G10 / Venezula N/A
N/A FPS 250 F2.5 G11 K N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G11 / China N/A
N/A FPS 250 F2.5 G2 K N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G2 / Great Britain G2 / India N/A
N/A FPS 250 F2.5 G3 K N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G3 / France G3 / Mexico N/A
N/A FPS 250 F2.5 G4 N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G4 / USA (CGA 580) N/A
N/A FPS 250 F2.5 G4 K N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G4 / USA (CGA 580) N/A
N/A FPS 250 F2.5 G4 K/D7 N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G4 / USA (CGA 580) N/A D7
N/A FPS 250 F2.5 G6 N/A 250 bar3500 psi N/A 8 ft2.5 m N/A G6 / Japan N/A
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