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 This product fixed in the end of the vent-pipe. Its can be installed in longtime. Close the valve, when going to the fire protection regions. And open it when come out from the fire protection regions. Effective life is one year.  This product is direct coupling with the vent-pipe. Its no need switch or screw. Easy to operate. All of the floats on the 60th anniversary of National Day will be installed this product. Effective life is one year.  This product is mainly used in visiting personnels vehicles when they go into the fire protection regions. Fix it on the end of vent-pipe, when going to the fire protetion regions. And take off it when leave. Effective life is two years.  This product is mainly uesd in farm, cotton factory, forested area, pasture and others fire protection regions. Fix it on the end of vent-pipe, when going to the fire protetion regions. And take off it when leave. Effective life is one year.  Installed on the end of vent-pipe. There is a dustproof top on the end of spark arrester, its used for avoid dust and impurities. Effective life is one year.  Made to order with the customer’s requirement. Also OEM products.
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