Protego LH / AD - T Deflagration Flame Arrester

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Short Time Burning-Proof, End-of-Line

Explosion Group: IIA1, D /IIA, C / IIB1, C / IIB2, C / IIB3, B / IIB, B / IIC

• Weather hood with protection screen protects the PROTEGO
• Flame arrester unit against environmental impact, such as nesting animals and weather conditions
• Available for DN 50/2“- bis DN 800/32“- pipes
• Trouble-free maintenance
• Advanced design for higher operating temperatures
• Provides protection against atmospheric deflagrations and short-time burning
• Low operating and lifecycle costs cost-effective flame arrester
• Cost-effective spare parts

Function and Description

The PROTEGO LH/AD-T end-of-line deflagration flame arrester provides protection against flame transmission through atmospheric deflagration and short time burning on the flame arrester element. The device is typically installed on vent lines of vessels and plant equipment which are not pressurized. The device is equipped with a temperature sensor which immediately detects a flame on the FLAMEFILTER surface. After the flame is detected, a secondary measure, such as inerting or closing of a shut-off valve to block the vapor flow to the device, should activate within 60 seconds and extinguish the flame so that the system can operate safely. The device prevents flame transmission from short time burning and atmospheric deflagration into the vessel or plant.

The PROTEGO LH/AD-T consists of the housing (1), a weather hood (2), and the PROTEGO flame arrester unit (3). The device is equipped with a metal weather hood. The FLAMEFILTER (4) gap size depends on the device’s intended use. Specifying the operating conditions, such as the temperature, explosion group, and the composition of the fluid, enables PROTEGO to select the best end-of-line deflagration flame arrester for your application. The PROTEGO LH/AD-T series end-of-line deflagration flame arrester is available for substances from explosion groups IIA to IIC (NEC groups D to B).

The standard design can be used with an operating temperature of up to +60°C / 140°F. Devices with special approval for higher temperatures are available upon request.

EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.

 Dimensions in mm / inches * c are reference values.

Exact measures depend on the flange connection.

 Other types upon request.

Special designs available on request.