Next Generation of True Monitor™ Protection Types CS803 and CS823 Fisher™ Types CS803 and CS823 Primary Regulator The Fisher CS800 Series regulator with True Monitor Protection has been engineered to provide the operation of a conventional two-regulator wide-open monitor set into one compact device without the need for a downstream control line. With an increased outlet pressure range and reduced downstream pressure buildup, this generation offers significant performance gains while at the same time offering installation ease with simplified setpoint adjustment and the flexibility of dual axis vent rotation. Performance and versatility translate into reduced cost of installation, from time-saving installation, to eliminating piping and control lines, to a reduced overall meter set footprint. Product Advantages • Two regulators, one compact installation • Eliminates emissions associated with internal relief • Reduced installation time and cost due to compact piping and fewer connections • Easy field set point adjustment saves time and operation costs • More flexibility in downstream equipment due to tighter control • Increased application breadth lets you standardize across all your overpressure protection requirements

Pressure control and complete overpressure protection all in one compact installation Control Line External Relief Valve Regulator Worker Regulator Gas Flow Replace Two Regulator Wide Open Monitor Installations One CS800 Series with True Monitor™ Protection can replace the two regulators required for a wide-open monitor installation, giving you these benefits: • Reduces piping cost • Eliminates downstream control lines and associated weld connections • Achieves an overall smaller installation footprint Replace External Relief Installations The CS800 Series with True Monitor Protection not only...