6.4 The Comyn oil/water Separater On commencing to pump oily water into the separator, the clean water surrounding the electronic probe causes the coil of the solenoid pressure controller to become energized and move the pilot valve to the open position, closing the outlet previously open to vent. Air is permitted to pass to the top of the diaphragm operated oil discharge valve and immediately closes it As the pressure within the separator builds up to approximately 0. 75 bar the spring-loaded water discharge valve opens6.4 The Comyn oil/water Separater • On commencing to pump oily water into the separator, the clean water surrounding the electronic probe causes the coil of the solenoid pressure controller to become energized and move the pilot valve to the open position, closing the outlet previously open to vent. Air is permitted to pass to the top of the diaphragm operated oil discharge valve and immediately closes it. • As the pressure within the separator builds up to approximately 0.75 bar the spring-loaded water discharge valve opens