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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.
Accum-ChrgNGage-Spareparts
Unit of Measure
1 2 3 

Part Number

Model Code Description

Connection Type

Adapter Type

Hose Length

Core Products

2067646 N/A Adapters D4/D7 with O-Ring (7.5x2) N/A N/A D4 & D7 N/A
2068737 N/A Adapter G4 Assembly N/A G4 N/A N/A
236369 N/A Adapter D7 N/A N/A D7 N/A
236376 N/A Adapter G2 N/A G2 N/A G2 N/A
236445 N/A Manual Bleed Valve FPS/FPK N/A N/A N/A
236515 N/A Hose FPS/FPK 4M N/A G1 N/A N/A 4 m
291531 N/A Adapter A5 (FPK TO M8X1) N/A N/A A5 N/A
291533 N/A Adapter A3 (FPK/SB) N/A N/A A3 N/A
361605 N/A Adapter A2 (FPK TO 5/8-18UNF) N/A N/A A2 N/A
361619 N/A Adapter A1 (FPK TO M16X1.5-MINIMESS) N/A N/A A1 N/A
366374 N/A Adapter D4 N/A N/A D4 N/A
373405 N/A Hose FPS/FPK 10M N/A G1 N/A N/A 10.0 m
2128849 N/A Adapter A10 (FPK TO 7/8-14UNF,SPECIAL) N/A N/A A10 N/A
3018210 N/A Adapter A11 (FPK TO M16 X 2) N/A N/A A11 N/A
3203185 N/A Adapter A12 (FPK TO M16x2 MINIMESS) N/A N/A A12 N/A
3911267 N/A Adapter A13-5/8-18UNF N/A N/A A13 N/A
291536 N/A Adapter A4 (FPK TO 7/8-14UNF,SPECIAL) N/A N/A A4 N/A
2108819 N/A Adapter A6 (FPK TO G3/4A) N/A N/A A6 N/A
2110629 N/A Adapter A7 (FPK TO G1/4) N/A N/A A7 N/A
2124524 N/A Adapter A8 (FPK to G3/4) N/A N/A A8 N/A
2128638 N/A Adapter A9 (FPK TO VG8) N/A N/A A9 N/A
2701356 N/A Adapter B-682 (CGA680 F - 1/2"NPT M) N/A N/A N/A
2701355 N/A Adapter B-70 (CGA580 F - 1/4"NPT M) N/A N/A N/A
2103427 N/A Adapter G10 N/A G10 N/A G10 N/A
3018678 N/A Adapter G11 FPU - G5/8-ISO228 N/A G11 N/A G11 N/A
Unit of Measure
1 2 3