Needle valve 2204

manualflow controlpressure-control

Model 2204 Variable Primary Pressure Flow Controller isa control valve that always keeps flows at a constant rateunder a given constant level of secondary pressure (outletpressure) even when the primary pressure (inlet pressure)fluctuates. The built-in precision needle valve accuratelycontrols flows to the set flow rate, including ultra-minuteflows. Features • Stable flow control A non-rotary needle valve composed of high-precision components ensures smooth control of even ultra-minute flows. • Not subject to supply pressure fluctuations Flows are protected from being affected by primary pressure (supply pressure) fluctuations, under a given constant level of secondary pressure (outlet pressure). • Cleanliness ensured All the high-precision components are super-cleaned before assembly so that the product can be safely used even on high-sensitivity instruments for analysis for which cleanliness is essential. Applications • Physical and chemical appliances • Control of the second-stage operation of pumps • Various instruments for analysis • Environmental instrumentation systems