... ,rotary or bolted rotary We also supply butterfly valve,ball valve,check valve,diaphragm valve,safety valve,union parts, ... clamp,elbow,tee,cross,reducer,sight glass,manhole cover,cleaning ball,centrifugal pump,pipe holder etc... Advantage: Prompt quotation, ... there are 105 staffs including 5 senior engineers. Device: YODSN combined CNC turning processing, CNC milling center, plastic injection, Die ...