Control Valve Study Bench

This bench allows the study of the characteristics of a needle control valve driven by a pneumatic servomotor. The concepts of Cv and Kvs will be addressed. The valve will be used with or without a positioner. Learn about Control Valve Study Bench manufacturers for optimal educational outcomes.. Educational Objectives: Plotting and study of curves: Qv=f(command) at constant pressure drop (intrinsic characteristics of the valve), Qv and ΔP=f(command) (influence of Cv on Qv and ΔP), Qv=f(command) at constant Cv (highlighting hysteresis and understanding the role of the positioner).

**Technical

Specifications**

Composition:

• A pressure limiter set at 3 bars on the water supply circuit with pressure gauge
• A brass operculum flow control valve
• A variable-Cv stainless steel pneumatic control valve (7 Cv graduations from 0. 1 to 0. 25 GPM)
• A pneumatic positioner
• An air pressure reducer/filter unit with pressure gauge
• A differential pressure gauge 0–4 bar
• A float-type flow meter 30–300 L/h
• A watertight electrical cabinet (IP66) including: lockable isolator, power indicator, keyed emergency stop, current generator (4–20 mA) with potentiometer and indicator
• Frame in stainless steel welded on legs

Options:

1. Closed-circuit water supply system including a 60L polyethylene tank with drain valve, supply pump, chassis on casters with brakes
2. Electropneumatic positioner replacing the pneumatic positioner
3. (Recommended) Differential pressure sensor and electromagnetic flow meter replacing the differential pressure gauge and float-type flow meter
4. Air compressor.