Model 106 / 206-RF
Rate of Flow Control Valve
|
The RF pilot valve (model 160-RF) senses the pressure differential across the specially sized orifice plate. When the pressure differential is less than the set point, the valve opens, allowing flow to meet predetermined demand. At the desired maximum set point, the pilot reacts to small changes in sensing pressure and controls the main valve position by modulating the pressure above the diaphragm. When the pressure drop across the orifice exceeds the set point, the valve closes slightly, limiting the flow to the pre-set maximum. |