Pressure Surge Damper,
Type RK-F10
Preliminary notes
Pressure surge dampers shall protect rooms,
facilities and ductwork against pressure
blasts. Such pressure waves could be pro-
duced by chemical reactions, gas-explo-
sions or mechanical damages at pressure
vessels. They can reach in about 100 milli-
seconds a positive pressure of approx. 0.45
bar and their duration will take about 1 s.
(see graphic).
Characteristics of pressure waves
Installation situation
Air flow and pressure loss
Application
In case of a requirement that single duct legs
or wall openings has to be open in normal
operation and to be closed in a pressure wave
resp. a pressure increasing situation, Krantz
recommend to use of their pressure surge
damper, type RK-F10.
According to the closing pressure an initial
tension will be adjusted at an installed spring
system. This initial tension ensures an open
position of the damper regarding wind blasts
and variation of pressure inside the duct sys-
tem. In open position and case of installation
outside of outer walls the damper also fulfils
the functions of a rain protection grille.
Pressure Surge Damper, Type RK-F10
July 2013
Page 2/6
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Krantz Filter Systems and Dampers
