Ventilators > Natural Ventilation
Natural Ventilation > High Capacity Weathered Roof Ventilators
A range of high capacity natural ventilators available with or without damper
control. Some units are also suitable for the addition of sound attenuation
equipment.
These
large volume units are commonly used for natural ventilation in high heat industrial
applications such as steelworks, glass production or even food industries
where high process heat loads are expected.
Natural Ventilation > Twin Flap Roof Ventilator with weathered side ventilation
This unit is identical to the NKVD-PS unit but has additional side wing ventilators
that can provide continuous ventilation in rainfall conditions.
Typical applications: Used where smoke / fire ventilation plus continuous daily
ventilation regardless of weather conditions is required. The side ventilators
can be open or fitted with operable dampers. Also suitable for special purpose
applications.
Natural Ventilation > Twin Flap Roof Ventilator with Sloping Flap Panels
This unit is identical to the NKVD-PF unit except that the top flaps are sloping.
This improves water shedding and prevents water pooling when installed on Flat
roof constructions. Typical applications: As for the NKVD-PS but specified
where high rainfall expected or where the ventilator is on a flat roof with
glazed insert panels,
to improve drainage and minimise build up of deposits on the glass. Also suitable
for Smoke ventilation.
Natural Ventilation > Twin Flap Flat Profile Roof Ventilator
A high capacity natural extract ventilator with two flaps each operated by a
linear pneumatic or electric actuator. Available with a range of solid or glazed
panel inserts to provide very high levels of insulation or sealing when required.
Bases are available in single skin aluminium, insulated construction or thermally
broken and insulated construction. Typical Applications: Generally specified
for use on built up and cladded roof constructions where they are mounted on
a suitable builders work up-stand.
The units provide a large free ventilation area to minimise the total number
required. Glazed units are not normally specified on flat roofs or where the
roof slope is less than 5 degrees as inadequate drainage causes mould build
up over
time. Often specified for combined Smoke Extract and daily ventilation systems.
Also suitable for special purpose applications.
Natural Ventilation > Casement Window Ventilator
A modular operable top hung window unit available with solid aluminium single
skin or insulated infill panels or a variety of glazed panels. Mounted in a
frame that can be thermally insulated or broken as required. Operation may
be by direct acting linear pneumatic or electric actuators or with chain actuators
where actuator penetration into the space below is
undesirable. Typical Applications: Suitable for building into Patent Glazing
Systems where flanges can be manufactured to match the glazed panel the ventilator
is to replace. Also suitable for wall mounting and for integration into Curtain
Wall Systems. Used extensively on glazed Atria and high quality Architectural
buildings. This ventilator is not suitable for Smoke/ Fire Ventilation.
