Manual Ceraminc Lined Knife Gate Valve: Excellent abrasion resistanceaaSmoothly openingaaLug typeLight weight, easy ... more than 5 years Manual Ceraminc Lined Knife Gate Valve Features:Excellent abrasion resistance,Smoothly opening,Lug typeLight weight, ... and reusability Applicable medium:Bauxite slurry, asphalt, catalyst residue, mud cement, concrete slurry, mortar, paper pulp, cement, paraffin wax ...