Commercial Service Reliability Introduction The CS800 Series direct-operated, spring-loaded regulators have been engineered to fit a multitude of pressure-reducing applications including commercial and light industrial installations. This flexibility is provided by the numerous body sizes and end connections, outlet pressure settings, orifice sizes and the option for internal or external pressure registration. The CS800 Series also offers numerous overpressure protection options including: • Internal Relief • High Capacity Relief • Secondary Seat™ Protection • True-Monitor™ Protection • Slam-Shut Protection Product Advantages • Increased relief and fl ow capacity = reduced installation cost • Reduced maintenance costs • Complete overpressure protection • Available with various body sizes and connections • Corrosion resistant fasteners and springs • Single bolt size reduces tools required to install and maintain Internal View of Optional High Capac

Largest Overpressure Protection Breadth in the Industry High Capacity Relief - Large 2-1/2 NPT vent provides a significant increase in relieving capacity and level of overpressure protection to the downstream system. Internal Relief - Minimizes downstream pressure buildup by relieving gas through the diaphragm assembly and out the 1 NPT vent to atmosphere in the event of an overpressure situation. Integral True-Monitor™ Protection Combines the operation of a conventional two-regulator wide-open monitor set into one device without the need for a downstream control line. Secondary Seat™ Protection...