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Shand and Jurs has announced that four of its Deflagration Arrester models have earned ATEX 94/4/EC approval.

Deflagration Flame Arresters are safety devices designed to keep the temperature of flammable vapour passing through the arrestor tube bank below its flash point, thereby preventing combustion.

The Shand and Jurs Model 94450 Combination Deflagration Flame Arrester and Free Vent is designed to provide positive fire stop and maximum venting under specified operating conditions.

The 94450 features one compact fitting for positive flame arrest and maximum-flow venting, and a unitised tube-bank standard.

Materials of construction include carbon steel, 304 stainless steel, 316 stainless steel, aluminum [ISO Only], ductile iron, cast iron [ISO only], duplex stainless steel, Hastelloy C and Alloy 20.

The 94470 Combination Conservation Vent and Deflagration Flame Arrester is a single package providing pressure and vacuum relief, as well as positive flame stop on low-pressure tanks containing flammable liquids or solvents having a low flash point.

The conservation (breather) vent features cushion-seated diaphragms constructed of FEP Teflon for reliability and extended service life.

For high reliability, the pressure and vacuum pallets are both peripherally and centre-stem guided.

The 94406 and 94407 are designed to provide a positive fire stop.

They are approved by FM (Factory Mutual), EN 12874, ISO 16852, and are available in a range of sizes and materials.

L and J Technologies

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