... equipped with a productive factory,Website:http://www.hugo-valve.com, Shanghai Hugo Valve Co.,Ltd is always at your service.Features1 ... scurries, powers or coarse substances. 3, slurry knife gate valve's structure is simple and impact, have small volume and ... to operate and maintain. 4, the sealing surface between rubber, valve gate and valve body guaranteed the reliable sealing, zero leakage.5, Double ...