gate valve weight kg lb make piping cast steel gate valve drawings cast steel gate valve drawings gate valve weight kg lb make piping bolt torque for class 900 spwd gaskets api 600 gate valves api 600 gate valves gate valve class 150 fire water service api 600 gate valves gate valve weight kg lb make piping cast steel gate valve drawings cast steel gate valve drawings cast steel gate valve drawings cast steel gate valve drawings api 600 gate valves api 600 gate valves cast steel gate valve drawings api 600 gate valves pneumatic actuator dimensions chart cast steel gate valve drawings api 600 gate valves cast steel gate valve drawings gate valve weight kg lb make piping cast steel gate valve drawings api 6a hydraulic gate valves api 6a hydraulic gate valves cast steel gate valve drawings cast steel gate valve drawings cast steel gate valve zhejiang cast steel gate valve drawings cast steel gate valve drawings cast steel gate valve drawings cast steel gate valve drawings api 6a hydraulic gate valves cast steel gate valve drawings cast steel gate valve drawings