Liquid End Features ·LE material:PP;PVC;PVDF;316SS ·Diaphragm material:PTFE ·Ball check material:Glass;Ceramic;316SS ·Special designec valve seat to ensure no leakage wether the pump running or stopping ·Variety of critical applications of pump head configuration: High viscosity,pulp,concentrated sulfuric acid,sodium hypochlorite,etc. ·Self-cleaning check valve structure