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The S & J Biogas 97150 Single Port Back Pressure Regulator is a
back pressure regulator with solenoid or thermally operated shut-off
capabilities. The back pressure regulator function maintains a preset
upstream pressure in low pressure (typically 2” - 10” w.c.) biogas lines
such as those leading to flares and waste gas burners. Its normal operating
position is closed until the set point is exceeded. A large spring-loaded
diameter diaphragm reduces line bounce for smoother gas flow.
Field adjustment of set point is easily done by changing position of the
spring with visual pointer indicator. The components are easy to access
providing for simplified cleaning and maintenance. When external sense
line is used, it should be connected a minimum of 10 feet upstream from the
regulator. The diaphragm-direct regulator can be ordered in two setting
ranges: standard and high, which are defined for a given line size.
The back pressure regulator’s second function is to positively shutoff
gas flow in emergency flame conditions when combined with a solenoid
controlled sense line or fusible element. This unit can be used alone,
but its most common application is as a component in
Item No. 97160 and 97161, Pressure Relief/Flame Trap Assembly.
An accessory fusible element assembly actuates the valve to a
complete line shut-off position in the presence of a fire or high
thermal event. Standard materials of construction include an aluminum
body with stainless steel pallet. The diaphragm is Nylon reinforce Buna-N.
Its aluminum and stainless steel components withstand the severest of
process environments. The S & J Biogas 97150 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.
The 97150 is 100% U.S. made.
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