The Smith Meter® Model 215B Digital Control Valve is  a high-performance segmented equal percent, V-Ball valve with a solenoid-controlled pneumatic/hydraulic actuator. When used in conjunction with a Smith Meter Electronic Valve Controller (e.g., AccuLoad®, or microLoad.net), the Model 215B Valve provides precise, trouble-free, low pressure drop, preset loading, and/or flow control of virtually any flowing liquid. The Smith Meter Model 215B V-Ball valves are ideal for controlling product flow at very low  flow rates, which minimizes cavitation.