Midland-ACS has launched a highintegrity
pressure regulator for the
pneumatic systems widely used for
valve actuation in processing. OPD
Stemsaver guards against failure of
the filter-regulator that controls
compressed air pressure by providing
dual-redundant over-pressure
protection. It ensures downstream
actuators cannot be accidentally
exposed to over-pressures that could
be high enough to shear a valve stem
or cause other damage.

The device provides a safeguard
against a failure mechanism that
could lead to a costly process
shutdown or injury.

Pneumatic actuation is used widely
for controlling and sequencing
process valves. In hazardous areas,
such valves are often elements of a
plant’s emergency procedures, such
as the safety instrumented system
that controls emergency shutdown.