Simple tofitadd-on gearbox
May 1st 2009 Dutch valve safety specialist
Netherlocks B.V has designed a
direct-mounting, add-on gearbox to
reduce torque for handwheel
operated valves. The Nethergear unit
can be fitted on-site without taking
the valve offline.
Most standard hand-operated gate
or globe valves have no flange upon
which to mount a gearbox. The
stainless steel AISI 316 Nethergear
unit mounts directly on to the valve
stem without altering the actual
valve itself.
The adaptor is based on the
company's interlock design. Once
attached, the handwheel can be
simply fitted on to the unit in one of
two positions. One of these will
provide the torque reduction
benefits of the gear mechanism; the
Saint Gobain Glass UK has a fire
suppression system from Nobel Fire
Systems at its float glass
manufacturing plant near Selby,
The SpectrAlarm
family from E2S
offers high
performance audible
and visual signalling
in a single unit.
Sound outputs of up
to 126dB can be
combined with a
powerful beacon
with a choice of
rotating mirror,
flashing Xenon or
LED technologies.
According to E2S, until now most
products available were limited to a
5 Joule Xenon beacon, which is not
powerful enough for outdoor use,
especially in bright sunlight. The
AB121, with its choice of 15 Joule
Xenon or rotating
mirror beacons,
provides effective
signalling in all
conditions.
The integral design
is not only more
aesthetically pleasing
than separate units, it
also saves on
installation time,
reducing cost. The
sounder and beacon
can be connected
separately, allowing the user to
silence the alarm but leave the
beacon flashing until the emergency
or fault has been cleared.
other lets it function as it would have
originally.
A Netherlocks pneumatic drive
unit can also be attached for
automatic valve operation that can
be up to 25 times faster than doing it
by hand. More articles from Netherlocks BV: | 
