Chemical Metering Pump Chemical Compatibility Ammonium Hydroxide Calcium Carbonate Hydrochloric Acid 10 Percent Hydrochloric Acid 20 Percent Hydrochloric Acid 30 Percent Hydrochloric Acid 40 Percent Phosphoric Acid 40 Percent Potassium Hydroxide 50 Percent Sodium Hydroxide 20 Percent Sodium Hydroxide 50 Percent Sodium Hydroxide 80 Percent Sulfuric Acid 10 Percent Water Control Programs Manual Control Diaphragm Material PTFE Discharge Connection Size 1/2 in