Entrained gas tester manual3/11/2023 The flame arresting element is 316 stainless steel. The housing is constructed of low copper cast aluminum which is non-corrosive in hydrocarbon gases and resistant to H2S and other corrosive elements. 25" through 2" sizes with NPT connections. The Varec 5200 Series Flame Check is available in. The Varec Flame Check housing is designed similar to a pipe union permitting easy disassembly to remove the flame arresting element for inspection and cleaning. In addition, the element design maximizes surface area for greater dissipation of heat resulting in maximum fire protection. The large net free area in the flame arresting element provides increased flow capacity with minimal pressure drop. The temperature of the flame is lowered below its ignition point, thus quenching the flame. The compressed woven wire element absorbs heat from the flame front faster than it is developed. If a flashback is generated, it is extinguished before it passes through the internal element. Flame checks prevent the propagation of a flame through the principle of dissipation. The flame check should always be installed as near as possible to the open end of the vent pipe or source of flame. Flame checks are installed in small pilot lines to fuel burning devices, in vent piping from manometers and diaphragm operated regulators. The Varec 52OO Series Flame Check is designed to stop flashbacks in small pipe lines carrying flammable gases.
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