Plastics
Rota Val provides the chemical and plastics processing industry specialist solutions for bulk flow control.
One key concern in the
manufacture of potentially harmful pure
chemicals
is the Occupational Exposure Level (OEL) to which employees are
subjected. In designing
rotary
valves
for use within isolation boxes, Rota Val
has had to consider the need to consistently maintain OELs of
between 0.01gms/m3 and 0.001gms/m3 under normal production
conditions over a very long time.
This involved the design of
valves
with extremely close operating tolerances and seals to virtually
eliminate product loss. Further reductions in leakage are made
possible by the introduction of an inert gas at positive pressure
into the seals. These features have proven value in reducing the
waste of expensive pure
chemicals, lower
disposal costs, and better containment with a subsequent improvement
in working conditions. Ease of manual strip-down without special
tools and effortless cleaning can also result in reduced system
downtime and a consequent improvement in productivity with lower
maintenance costs.