Overpressure and vacuum flap
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Catalog excerpts

Overpressure and vacuum flap - 1

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.

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Overpressure and vacuum flap - 2

A B C D H Material/Design: As construction material steel and various stainless steels are available. Standard sizes are 150 mm and 300 mm diameter. As an option the ap can be tted with proximity switches. For use on silos and containers in enclosed halls the ap can be supplied with an exhaust air connection pipe so that the air escaping from the silo can be led away through pipelines. E E1 Finish: Hammertone silver gray. Connecting flange NW 150 G Advantages: · Practically maintenance-free · All bearings long life lubricated · Outlet opening fully effective due to weighted ap discs ·...

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