Brooks® Flow Controllers for Gas and Liquid Service Model FC 8744, Series FC 8800 and FC 8900 - Brooks Instrument - #1

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1 Flow Controllers for Gas and Liquid Service Data Sheet DS-VA-FC-eng April, 2008 Brooks® Flow Controllers for Gas and Liquid Service Model FC 8744, Series FC 8800 and FC 8900 Model 1350 with FC 8900 Flow Controller Model FC 8744 Flow Controller Model FC 8800 Flow Controller BENEFITS • Flow controllers for high pressure or low flow rates to handle demanding applications • Integral mounting to flowmeter to save space and improve installation • High-resolution valves provide precise flow control for many applications • Many different materials of construction that provides process immunity and flexibility DESCRIPTION Brooks® flow controllers are designed to maintain a constant differential pressure across an integral, manual flow regulating valve. The incoming fluid pressure on one side of the diaphragm, and outlet pressure plus spring action on the other side, position an internal diaphragm-actuated control valve. Variations in the supply or discharge pressure disturb the balance of forces on the diaphragm, causing the internal control valve to open or close, thus maintaining a fixed differential pressure across the integral, manual flow regulating valve resulting in constant flow. Refer to Figure 1. Model FC 8744 controllers are used for accurately adjusting and maintaining small gas and liquid flows with variable downstream pressures. Series FC 8800 controllers are used for accurately adjusting and maintaining liquid and gas flows with variable upstream pressures. Series FC 8900 controllers are used for accurately adjusting and maintaining liquid and gas flows with variable downstream pressures. SPECIFICATIONS Flow Ranges Water - up to 480 GPH / 1820 l/h Air - up to 2130 SCFH / 56000 ln/h Refer to Table 1. Pressure and Temperature Ratings Up to 1000 psig / 69 bar Refer to Table 2. Pressure Equipment Directive (97/23/EC) Equipment falls under Sound Engineering Practice (SEP) according to the directive Pressure Drop Refer to Table 2.