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VENT-LINE / IN-LINE CIRCULAR PLATE FLAME ARRESTER

VENT-LINE / IN-LINE CIRCULAR PLATE FLAME ARRESTER

Series No. 4950

The Protectoseal Series No. 4950 Vent-Line / In-Line Flame Arrester is designed to be installed in open vent pipes or bleed lines from storage or processing tanks. The arresters are used to prevent the propagation of an external flame through the vent opening and into the tank. They provide maximum air-flow consistent with operating efficiency and safety. Listed by Underwriters' Laboratories (UL) in 1" through 10" sizes. Factory Mutual (FM) Approved in all sizes.

When properly mounted in a open vent pipe line, the Series 4950 Flame Arrester allows vapors to discharge into the atmosphere and allows air to be drawn into the pipe through the flame arrester grid assembly. If an external flame source is encountered, the device prohibits passage of the flame into the tank's vapor space. They may be installed within specified distances from the end of an open vent pipe. The 1" size is listed for installation at distances up to 50' from the open end of the pipe. The 2" size and larger are listed for installation up to 20' from the open end of the pipe.

Suitable for Group D Vapors, such as gasoline and methane, as referenced in the National Electric Code (NEC Article 500), generally equivalent to International Electrotechnical Commission (IEC) Group IIA.