INT 3.501.BA13/12.21
39
EN
2. Design
The HYDAC FPU is a connection unit for
bladder, piston, diaphragm and metal bellows
accumulators The following parts are built on
as standard:
–
Valve body
–
Spindle
–
Non-return valve
(only FPU‑1
)
–
Release valve
–
Pressure gauge
–
Charging hose
–
Adapter A3
(FPU‑1
) /
adapter A3H
(FPU‑2
)
only for bladder accumulators
2.1
FPU‑1 diagram
G1
M
N
2
N
2
Adapter G
Pressure reducer
FPU‑1
Charging hose
Adapter A
Nitrogen bottle
Hydraulic accumulator
Fluid connection
NOTICE
Key to fold‑out pages:
2 I = Table "Adjustment of the nitrogen
pre‑charge pressure as a function of
the accumulator temperature"
Our tool can be used to determine
additional values:
3 I =
FPU‑1 (with sectional view)
3 II = Adapter A3 for bladder accumulators
3 III = Gas charging connection for bladder
accumulators
3 IV = Gas charging connection for piston,
diaphragm and metal bellows
accumulators
4 I =
FPU‑2 (with sectional view)
4 II = Adapter A3H for bladder
accumulators
4 III = Gas charging connection for bladder
accumulators
4 IV = Gas charging connection for piston,
diaphragm and metal bellows
accumulators
5 I = G adapters (part number)
FPU‑1 for nitrogen bottles up to
200 bar
5 II = Charging hoses F, FM, FW for FPU‑1
5 III = Charging hose FH for FPU‑2
