WAM cement pneumatic valve (complete model) WAM cement pneumatic valve (complete model) using gravity casting made of two half-body composition, half body aluminum alloy material, the rotary valve plate using polymer materials, has a good seal sex. Top and bottom of the same circular flange, having a top flange and a hemming member for a flexible sleeve. WAM cement pneumatic valve (complete model) of the main advantages of simple structure, small size, light weight, low cost, pneumatic cement butterfly This feature was particularly notable, install underground passage at high altitude, after two five-way solenoid valve control easy to operate, can also be regulate the flow of media. Fluid resistance is small, while the large-diameter pneumatic butterfly valve is fully open and effective flow of larger, open and close rapidly effort, pull the disc rotation angle of 90 to complete the opening and closing, due to the shaft side dish wrench media force nearly equal, while the opposite direction of the torque generated, and thus a smaller opening and closing torque, low pressure can achieve a good seal, butterfly valve seal materials NBR, Viton, edible rubber, PTFE lining so good sealing performance, including sealing butterfly advantages of hard and soft valves for heavy metal sheets stacked with a metal seal and a resilient seal, both at low temperatures have excellent sealing properties. WAM cement pneumatic valve (complete model) Features: single flange valves: with top flange and folding parts, suitable for connecting a flexible sleeve. Double flanged valves: the same top and bottom flanges. Body: gravity casting, die-cast body strength higher than the valve plate: Benefits Rotary, wear resistance, less restructuring parts, lightweight, easy to transport cement WAM pneumatic butterfly (complete model) 1, opening and closing easily and quickly, saving, fluid resistance, can often operate. 2, simple structure, small size and light weight. 3, can carry mud accumulation of fluid in the pipe mouth least. 4, low pressure, can achieve a good seal. 5, regulated performance