1. Safety
1.1 General
This document applies exclusively to Freudenberg diaphragm accumulators. Careful reading of
the following safety instructions and process descriptions before commissioning, maintenance
or repair is absolutely essential. Documents supplied must be kept carefully; they are required
for recurring inspections.
The legal regulations applicable at the place of installation are mandatory for commissioning
and continuous intended use of the diaphragm accumulators. The operator is solely responsible
for compliance with these regulations.
1.2 Technical Data
Diaphragm accumulators are pressure vessels according to the European directive 2014/68/EU
and used to charge and supply hydraulic energy in applications such as pressure fluid storage,
pulsation dampening and shock absorption. Its diaphragm acts as a separator between the
pressure fluid of a hydraulic system and the pressure-energy-storing nitrogen gas volume of the
diaphragm accumulator. Diaphragm accumulators are designed in accordance with generally
accepted technical regulations and standards.
Diaphragm accumulator ≤ 1 liter: according to directive 2014/68/EU it is not allowed to put CE
sign on Accumulators with an nominal volume up to one liter and max. permissible working
pressure up to 1000 bar.
Diaphragm accumulator >1 liter : according to directive 2014/68/EU accumulators with a
nominal volume more than one liter have to be marked with an CE–identification.
Type [D ...]
Volume [V]
Perm. working pressure [PS]
Perm. working temperature [zul. J (°C)]
Year of manufacture
Working fluid
Security valve
D ...(V) - ... (PS)
0,07 ... 3,5 [L]
PS 40 ... 350 [bar]
-10...+80 °C
Other temperatures please request or see stamp on
accumulator
See stamp on accumulator
Mineral oil (other liquids please request)
Is not included in the delivery capacity
10