Airflow Control
Waddell Airflow Control products are time proven flow
or pressure control devices where accuracy & repeatability
are very important. The airfoil shape of the blades during modulation assures performance linearity & minimal hystersis. The air foil shape also contributes to a very low pressure drop & minimal noise generation.
Over 70 standard sizes are offered meeting the
space & performance needs of almost any project.
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Airflow Control Products
Waddell Pneumatic Damper (WPD/810)
The WPD 810 is designed with
pneumatically inflated air foil blades.
The air flow control is very accurate,
linear & hystersis free. Over 70 sizes
with flow ranging from 100 cfm
to 8000 cfm. Sucessfully applied for over
30 years in Pharmaceutical Facilities,
& Research Laboratories.
Extra Large Damper (WPD-L/810)
For larger flow rates several standard
dampers can be assembled in parallel
for accurate air flow control. Sizes are
available up to 72" high x 70" wide
& flow rates to 60,000 cfm.
Typical applications include large
zones where quiet & linear VAV
operation is required.
Low Leakage Pneumatic Damper (WPD-LL/811)
The WPD 811 LL is designed for very
low leakage rates through both the
casing as well as the closed damper
blades. Typical applications include space
isolation for chemical spills
& space decontamination.
Pneumatic Slide In Damper (WSD/813)
For projects where the existing
ductwork does not have to be
changed.The slide-in damper fits easily
into existing duct systems & adds
active & accurate control over air
the air flow & pressure.
Small Vivarium Damper (WPD-SV/825)
This accurate air flow control device
is designed for very small air flow
with possible contamination.The device
includes inflatable air foil blades, an
orifice for air flow measurement & air
flow straightening where entering straight
duct lengths are limited.