https://www.powtech.de/en/ausstellerprodukte/powtec22/product-10308465/explosion-isolation-valve

VIGI-FLAP

STIF presents its new product available since the end of March 2019:
The VigiFLAP is a non-return valve designed to prevent overpressure or flame caused by a downstream explosion (dust collectors, filters, cyclones...) to propagate in the piping system. The valve is held open by a lever arm. It can be used both at the entrance and at the exit of the filter.
This allows to isolate the filter of an explosion or an overpressure. In case of explosion, the valve closes and remains locked preventing the passage of the flame.
The unlocking of the flap is done manually.

WELCOME STIF FRANCE

The S.T.I.F. company is the first French manufacturer of components for the handling of the bulk products. Based in 1984, the S.T.I.F. built up to itself a robust international reputation by exporting, in more than 60 countries.Implanted in the West of France near ANGERS in 80 km of the port of NANTES-ST NAZAIRE, the production unit extends over 10.000 m ². The policy of constant investments which the S.T.I.F. developed, for several years, with the aim of maintaining its technological advance, led it to be equipped with the most modern equipments of production in the service of technicians' team method and equipment of the most successful and effective.