97160 Pressure Relief/Flame Trap Assembly

Shand & Jurs Biogas 97160 Pressure Relief/Flame Trap Assembly PDF
  • Internal Sense Tap (External Sense Tap Optional)

  • Positive Emergency Shutoff

  • Maintain Upstream Pressure

  • 255°F. Fusible Link

  • Sizes 2" Through 12"

  • 3-Way Solenoid Shut-off option for flare system

  • Large diaphragm for sensitivity

  • Optional Insulation Jackets Available


The Shand & Jurs Biogas 97160 Pressure Relief and Flame Trap Assembly combines a 97150 Back Pressure Regulator, a Thermally Operated Shut Off Valve, and a 94407 In-Line Deflagration Arrester to maintain upstream pressure and effectively inhibit flame propagation in low-pressure gas lines.

The Flame Arrester tube bank assembly absorbs heat faster than the ignited gas can produce it. This lowers the gas temperature to below the ignition point, thus quenching the flame. The back pressure regulator maintains an adjustable preset upstream pressure. When upstream pressure exceeds set point, the diaphragm will open the valve. After relieving gas to flare the pressure in the line will drop below set point closing the valve. The Pilot Valve Assembly contains a fusible material that melts at 255°F and closes the regulator valve effectively shutting off flow during emergency thermal event conditions.

The Flame Trap Assembly should be installed upstream of a waste gas flare or burner. If external sense line is provided, it should be connected at least 10 pipe diameters upstream of the pressure relief section.

Standard materials of construction include an Aluminum Body and Buna-N diaphragm. Its aluminum and stainless steel components withstand the severest of process environments. The Shand & Jurs Biogas 97160 is especially designed for hydrogen sulfide and hot, wet methane which are the main components of digester gas streams in municipal waste water treatment facilities.


L&J Technologies or any of it's subsidiaries assume no responsibility and shall not be liable for any damage, injury or death caused by the mis-application or improper installation of the products that it provides. Installation shall be per manufacturer's instructions in accordance to any applicable local, state or federal regulations. It is the responsibility of the purchaser to ensure these guidelines are followed and that the products are applied properly.