pharmaceutical industry K Controls products are predominately used to
accurately monitor or control the position of on/off valves. Most of
these valves are used on primary process plants that produce active
ingredients in batches via chemical synthesis, fermentation or
monitoring and control has to be accurate and reliable in order to
ensure consistent standards of product purity and quality.
alcohol, methanol and other potentially ignitable solvents are used in
chemical synthesis and also in the solvent extraction stage of the
fermentation process. Finished products can be in fine powder form so
combustible dust hazards can also be created. For these reasons K
controls products are often supplied with Exi intrinsically safe
certification, to the very latest standards, for use in hazardous gas
and dust Zones 1,2, 21 and 22. Water can be present in areas that are
washed down, so enclosures are rated IP66 or IP67.
be close to one another in the area of the reactors or fermentation
vessels and this leaves little space for valve actuators. To overcome
this problem 007 switchboxes have compact, low profile enclosures. In
addition optional highly visible position indicators have been
engineered into the space between the actuator and switchbox.
valves are sometimes located in remotely sited panels but this can lead
to problems with valve identification and lags in actuator response
times. K Controls combines one or more pilot solenoid valves for
actuator control with the position switches in the same compact
enclosure local to each actuator. The result is the 007C Control Monitor.
Envelope dimensions of the 007C and actuator assembly remain the same,
the solenoid is protected from the environment and if solenoid manual
override is specified it is “tamperproof” because it can only be
accessed by deliberately removing the cover.
switches can be mechanical or “Namur” proximity, depending on the type
of safety interface being used. Solenoid function can be 3/2 single
acting, 5/2 double acting or 5/2 double acting stay put. Low powered
solenoid valves are available for use with virtually all remote I/O
systems or field bus valve couplers.
“Checktite” swing check valve is widely used in the pharmaceutical
industry. It is available with the same range of end connections, seats
and seals as three piece ball valves. The K44 has a very low cracking
pressure and pressure drop. Optional FDA approved PTFE seats and seals,
and or chemically polished internals are available.
list of K Controls pharmaceutical clients is available on request.