Danfoss APP W HC Series, Operation Manual

Page: 28 / 80

Data sheet | APP W HC 15 -30
28 180R9410 | AQ282628894589en-000801 | IOM APP W HC 15-30 Pumps | 01.2022
Media filter
M
Brine
Permeate Feed
PI PI PI PT
PI
PI
PI
Fresh water
permeat flush
Preferred design - see section 9.2
High pressure safety or relief valve:
i) As the Danfoss APP pump begins to create
pressure and flow immediately after
start-up and regardless of any counter
pressure, a safey or pressure relief valve (8)
should be installed after the non-return
valve to prevent system damage and to
avoid high pressure peaks .
Note: If a non-return valve is mounted in the inlet
line, a low-pressure relief valve is also required
between the non-return valve and
pump as protection against high-pressure peaks .