Modular pneumatic
April 1st 2011 Fortress has redeveloped its
Pneumatic Valve+ (PV+) unit into a
modular design that allows the
configuration of an array of valves,
trapped key interlocks and key
switches in any combination.
The PV+ is suitable for the
isolation of a pneumatic power
source and is conventionally keyfree,
but the revised modular design
allows the unit to be used in
conjunction with other functional
modules, giving the user flexibility.
The PV+ has been designed to
complement the Fortress mGard
range of mechanical key interlocks
for heavy applications, which work
by releasing and trapping keys in a
predetermined sequence to ensure
safe operation of dangerous machinery;
access is not permitted until a
safe condition has been achieved.
With the new PV+, a
combination of isolation/access
keys is possible, with sequential or
non-sequential key operation
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