United States

Change country website

Most popular HYDAC websites

Show all countries
Contact
Contact Finder Location Finder Feedback for the President Contact us
myHYDAC
Search
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 bottlemore
Unit of Measure

Specifications

Type

 Charging and Gauging Units

Model Code Description

 FPK 25 F4 G4 A3 K

Series

 FPK

Gas Valve Version

 Version 1 (M28 x 1.5) and Version 4 for SBO, SK, & SB, SB Top Repairable

Gauge / Gas Pressure [Min]

 0 bar0 psi

Gauge / Gas Pressure [Max]

 25 bar350 psi

Charging Hose

 With Cap Screw G1 (Thread W24, 32x1/14 - DIN477)

Charging Hose Length

 13 ft4 m

Connection Type

 G4

Adapter / Country

 G4 / USA (CGA 580)

Case

 Plastic Carrying Case (Standard)

Connection Size

 Thread W24, 32 x 1/14 - DIN477

Additional Adapter Type

 A3

Valve Type

 Bleed

BUn

 EA

Division

 ACCUMULATORS

Product Group Family

 CHARGING AND GAUGING UNITS

Product

 ACCUMULATORS ACCESSORIES

Includes

N/A The standard FPS & FPK Charging and Gauging kits include a hose with the G1 bushing and a G4 adapter for North America. Other "G" adapters are available separately or included in kit.

Additional Accessories

N/A 6 mm Allen Wrench
14 mm Open End Wrench
O-Ring (PN - 601032)
Seal-Ring (PN - 601228)
Gauge 10 (0 to 145 psi) (PN - 606759)
Gauge 25 (0 to 350 psi) (PN - 606760)
Gauge 100 (0 to 1400 psi) (PN - 606761)
Gauge 250 (0 to 3600 psi) (PN - 606762)
Gauge 400 (0 to 5800 psi) (PN - 606763)
Check Valve (PN - 610004)
Manual Bleed Valve (PN - 236445)
O-Ring - FPS (PN - 626488)
O-Ring - FPK (PN - 601049)
2.5 m Hose (PN - 236514)
4 m Hose (PN - 236515)
10 m Hose (PN - 373405)
ADAPTER G4 (PN - 2068737)
ADAPTER A3 (FPK/SB) (PN - 291533)
O-Ring - ADAPTER A3 (FPK/SB) (PN - 601964)

Additional Information

N/A Gas Valve Version 1
Metric, M28 x 1.5
Used on Diaphragm Accumulators w/ E1 gas valves and Piston Accumulators w/ VA or VB gas valves.

Adapter A3 (FPK/SB)
Part No. 291533
The A3 (FPK/SB) adapter can be used with the FPK to connect to any HYDAC version 4 gas valve for both bottom and top repairable bladder accumulators. The A3 adapter also serves as the required spacer for top repairable bladder accumulators.

All HYDAC charging and gauging units incorporate a gauge and check valve in the charging connection, and a manual bleed valve with a T-handle.
HYDAC offers charging and gauging units:

  • FPK for use with HYDAC version 1 gas valve

Note

N/A Operating and Installation Instructions are included with each charging kit.

SB Top repairable bladder accumulators must use FPK with Adapter A3 (FPK/SB), PN 291533.

Only qualified persons should perform maintenance on any type of accumulator.