Manual Ceraminc Lined Knife Gate Valve: Excellent abrasion resistanceaaSmoothly openingaaLug typeLight weight, easy installation Use in the annual production of 15 million ... the intermediate part more than 5 years Manual Ceraminc Lined Knife Gate Valve Features:Excellent abrasion resistance,Smoothly opening,Lug ... slag, wood chips, ash, clay, coal, etc. Manual Ceraminc Lined Knife Gate Valve KAIERTONG