Modular pneumatic valve+
March 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 key-free, 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 available. More articles from Fortress Interlocks Ltd: | 
