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Membrane Filter Elements
Status: 06/2001/01 Operating Manual 35
6.3.2 Compressible squeeze media
Compressed gas (referred to as air in the following) can be used to squeeze the
membranes with an external or internal inflation system by observance of all safety
precautions.
Figure 6-5 Air squeezing system
Squeezing pressure limitation
The compressed air flows through a shut-off valve and then through an automatic pressure
controller/reducer into the manifold to limit the squeezing pressure. To safeguard the
compressed air against thermal expansion and possible malfunctions of the pressure
reducer, a safety valve must also be installed in the manifold line to limit the operating
pressure to the permissible maximum pressure.
Warning
Use only suitably approved components in the compressed air system. Your supplier
can provide you with DVGW, TÜV or other national or international certifications of the
required approvals.
WARNING