Overpressure and vacuum flap0 pages

Overpressure and Vacuum Flap
Stanelle – Always the best solution
Type SDAK
For highest silo safety
through optimum pressure
balance
Areas of application: The Stanelle-Overpressure
and Vacuum Flap, Type SDAK, is a safety organ
for silos which are lled pneumatically. Overpressure as well as vacuum – the latter arising from
exhaust fans or through cornice collapses – can
be balanced because of the combined design of
the pressure aps. The optimum protection of the
silo is guaranteed through the maintenance-free
construction of the SDAK aps.
Operation: The weighted, ball bearing supported
aps are opened through the outside, respectively
inside pressure of the silos. In the unopened position the rubber-coated aps discs are dust-tight.
With a negative pressure of more than 5 mbar
the vacuum ap is opened through the outside
pressure. Outside air can stream into the silo for
pressure balance. When overpressure occurs
in the silo interior, the ap, with an adjustable
weight, opens. The excessive pressure can be
neutralized via the ap opening. The special design guarantees that the actuating pressure does
not increase excessively and the outlet opening
can respond.