Cleaning - SPX FLOW APV DELTA SD4 Series Instruction Manual

APV
APV_SD4_ATEX_UK-0_122018.indd
Double seal valve
DELTA SD4-ATEX
Instruction Manual: UK - rev. 0
6.

Cleaning

For the cleaning of SD4 valves, distinction is made between two
areas.
6.1. The flow chambers
The passages of the valve are cleaned by the cleaning liquid during
cleaning of the connected pipelines.
6.2. The leakage chamber (fig. 6.2.)
Cleaning of the leakage chamber is undertaken via the leakage
valves. The cleaning liquid is supplied via one leakage valve and
discharged to the atmohsphere in a closed process via the second
leakage valve.
The restraint passage of the cleaning liquid provides for a perfect
cleaning of the whole leakage chamber.
- Flushing quantity per CIP cycle:
- Cleaning pressure at CIP cleaning connection:
Under standard operating conditions, 15 valves DN 25/1" - 100/4"
can be cleaned via one spray distribution line DN 25.
fig. 6.2.
CIP IN
6.3. Cleaning (leakage chamber)
Recommendation of cleaning cycles with standard operating
conditions and CIP liquids.
Cleaning steps
Pre-flushing
Caustic flushing 80°C
Intermediate flushing
Acid flushing
Subsequent flushing
UK
about 1.2 tr / 10 s
min. 2 bar
max. 5 bar
CIP OUT
G ⅛
CIP-spraying
3 x 10 sec.
3 x 10 sec.
2 x 10 sec.
3 x 10 sec.
2 x 10 sec.
8