Sulphuric Acid Dosing Pump: Material, Safety and Setup Guide Quick answer: For sulphuric acid, the right material depends on concentration. Dilute acid attacks SS316 strongly; PP, PVDF or PTFE liquid ends suit dilute and mid-range acid at moderate temperature. Concentrated acid (around 98%) is often handled with Alloy 20, PTFE or PVDF. Use PTFE diaphragms […]

Sodium Hypochlorite Dosing Pump: Selection, Materials and Gas-Locking Fixes Quick answer: Use a diaphragm metering pump with a PVDF or PP liquid end, PTFE-faced diaphragm and ceramic or PTFE valve balls. Avoid stainless steel. Keep the suction short and flooded and fit a degassing valve, because hypochlorite gives off gas that air-locks the pump. Sodium […]