* Flow switch to ensure circulation to control probes and indication that pool circulation is occurring (included in Digital Controller/Globe Flow Cell Only)
* * Safety flow Switch for protection of heater and to ensure dilution of chemical into the pool
Rola-Chem Solenoid Kit 550290 is rated for a maximum pressure differential of 6 psi and has a valve coefficient of (Cv) 2. Some erosion feeders require a solenoid rated for a higher flow. Contact the manufacturer for requirements.