Cleaning - SPX APV DELTA DF plus 2 Operating Manual

DELTA DFplus2 - UK1 / qxd.12.2004
flow chambers
sealing
surface
CIP
D
leakage
chamber
ring nozzle
7
5.

Cleaning

With the cleaning of the DFplus2 valves it is necessary to
distinguish between three areas:
The flow area
The upper and lower passages are cleaned by the flowing
cleaning liquid during the cleaning of the connected pipelines.
The seal surfaces in the seat area
The seat seals (7) and (5) are cleaned through valve actuation
and lifting of the individual valve seats during the cleaning of the
resepective passage. The seal surfaces are flushed and cleaned
by the cleaning liquid.
The leakage chamber
The cleaning of the leakage chamber is effected by CIP spraying.
Cleaning connection (D).
Spraying does not produce pressure built-up in the leakage
chamber and should preferably be undertaken in closed valve
position. The flow of the cleaning liquid provides for perfect
hygienic cleaning of the leakage chamber.
Under standard conditions 15 valves 1,5" to 4" can be cleaned via
one 1" spray distribution line.
10 valves can be cleaned via one 1" spray distribution line.
Cleaning recommendation:
Cleaning step
Pre-flushing
o
Caustic flushing 80
Intermediate flushing
Acid flushing
Final flushing
seat lifting
C 3 x 5 sec.
2 x 5 sec.
3 x 5 sec.
2 x 5 sec.
UK
CIP spraying
3 x 10 sec.
3 x 10 sec.
2 x 10 sec.
3 x 10 sec.
2 x 10 sec.
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1