Keofitt W9, User Manual, Page: 19 / 50

KEOFITT W9 USER MANUAL V.4 PAGE 19
5. VALVE OPERATIONS
This chapter provides clear instructions on how to operate the sampling valve in different situations.
Before sampling the valve must be cleaned followed by disinfection or sterilisation, depending on your
requirements.
NOTE!
For the initial cleaning before a new batch please refer to chapter 4.1 “Batch change
cleaning” and integrate the valve cleaning in your standard CIP procedure.
Valve bodies with hose piece connectors (Quick Couplings) are supplied with rubber caps (part no.
600062) to protect the inlet/outlet ports and the valve chamber from being contaminated by the
environment between samples.
A rubber cap placed at the inlet port (top port) during sampling also protects the sample and prevents it
from flowing through the top port in case of high pressure/flow.
To place a rubber cap simply press it axially against the hose piece until it “clicks in”. Remove it by pulling
it outwards axially.
Caps in stainless steel are available as accessories (part no. 800061). They are mechanically more robust,
withstand higher pressure and may be autoclaved.
To fit the steel cap compress the spring loaded lock pin, place the cap over the hose piece and release
the lock pin. Make sure the lock pin has moved fully back to its initial position for a secure locking.
IMPORTANT
• All illustrations show a sampling valve with Keofitt hose piece connections. All instructions
also apply to valve versions with clamp connections; only make sure to use the corresponding
fittings.
• All illustrations in the following sub-chapters show a valve head with a turn knob (type H),
but the instructions also apply to valve heads with a key (type K), a handle (type Q) or a
pneumatic actuator (type N). Please see chapter 3.3 for a description of the different valve head
configurations.