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Variable Primary Pressure Flow Controller (Not subject to supply pressure variations)
MODEL 2204 SERIES
Model 2204 Variable Primary Pressure Flow Controller is a control valve that always keeps flows at a constant rate under a given constant level of secondary pressure (outlet pressure) even when the primary pressure (inlet pressure) fluctuates. The built-in precision needle valve accurately
controls flows to the set flow rate, including ultra-minute flows.
Features
1.Stable flow control
A non-rotary needle valve composed of high-precision components ensures smooth control of even ultra-minute flows.
2.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).
3.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
1.Physical and chemical appliances
2.Control of the second-stage operation of pumps
3.Various instruments for analysis
4.Environmental instrumentation systems
Standard Applications
Rated flow ranges : Gas: 10 ML/min–10 L/min
Control accuracy : Within the set flow ±2% when the primary pressure (inlet pressure) changes by 0.3MPa in a range between 0.07 MPa and 0.8 MPa.
Number of turns of regulating screw : Approx. 12 turns
Maximum operating pressure : 0.8 Mpa
Maximum operating temperature : 60℃
Materials of parts in contact with fluids : (A) Al, brass, POM, NBR, SUS316
(SS) SUS316, fluorocarbon resin, FKM
Connection end : Rc 1/8 (M8 + Rc 1/8)
