Cleaning; Flow Area; D4 Sl Valve: Seat Area; Seat Area And Leakage Chamber - SPX FLOW APV D4 Instruction Manual

APV
APV_D4_D4SL_GB-3_022024.indd
fig. 6.3.
free drain
CIP liquid
Double Seat Mix Proof Valve
APV DELTA D4 / D4 SL
Instruction Manual: GB - rev. 3
6.

Cleaning

In the cleaning process of the valves, distinction is made between
the following areas: Flow areas, Seat area, and Leakage chamber.
6.1.

Flow area

The CIP-fluid cleans the upper and lower passages of the valve
during CIP.
6.2. D4 SL valve: Seat area (chapters 6.5. and 6.6.)
The seat area and leakage chamber are cleaned through lifting
of the individual valve shafts during cleaning of the respective
passage.
6.3.

Seat area and Leakage chamber

CIP spraying cleans the seat area and the leakage chamber. The
cleaning connection is at item C in fig. 6.3.
D4 valve: CIP spraying must generally be undertaken.
CIP spraying does not produce pressure build-up in the leakage
chamber. SPX FLOW recommends performing CIP-spraying in
the closed valve position; however, it can also be done in the open
valve position.
Under standard conditions 15 valves DN 40-100 / 1,5"-4", 10 valves
DN 125-150 / 6" can be cleaned via one spray distribution line DN
25.
6.4.

Cleaning recommendation

C
Cleaning steps
pre-flushing
caustic flushing 80°C
CIP spraying
intermediate flushing
acid flushing
subsequent flushing
- D4 SL Valve:
- Depending on the pressure ratio, cleaning temperatures, cleaning
steps and degree of soiling, time and number of cycles must be
adjusted.
- Flushing quantities per CIP spraying cycle:
DN40-100/1,5-4"
DN125-150/6"
- Cleaning pressure at CIP cleaning connection:
Caution!
!
The cleaning liquid applied must be compatible with the respective
seal material.
Seat lifting cycle
(D4 SL)
–
3 x 5 sec.
2 x 5 sec.
3 x 5 sec.
2 x 5 sec.
The lifting cycles refer to a cleaning pressure of
p = 2-5 bar.
about 1,2 ltr/10s
about 5,0 ltr/10s
GB
CIP spraying
3 x 10 sec.
3 x 10 sec.
2 x 10 sec.
3 x 10 sec.
2 x 10 sec.
min. 2 bar
max. 5 bar
11