structure 1 with pneumatic valves. Manual valve is mainly composed of valve body, valve cover, valve, the valve stem, sealing ring, double cylinder and piston, piston rod, plate, and buffering mechanism of manual, pneumatic manual switching device. And cover. Part of the packaging equipment. Upstream piston 2, with the top of the line to the stroke can fill send information; Under the lower end of the piston stroke can be used for the top bottom echo, thus can be used as a gate valve opening and closing information sent to the simulation are shown in the middle of the screen on the dashboard. 3. The rise and fall of the upper handwheel overhang indication rod said valve valve is in a higher state or in a state of lower. When the gate valve closing, trailer indication rod in the lowest position; Otherwise, when the valve fully open, trailer indication rod in the highest position. This is the state of the valve opening and closing instructions given. The upper cylinder cover is equipped with pneumatic manual switching device. The switch handle clockwise to 'pneumatic' positioning hole, gate valve in the pneumatic operation state; Otherwise, the switch handle counterclockwise rotation to the hole of the 'manual' location, pneumatic gate valve can be manually. Reverse bevel gear lever in the opposite direction. When the manual gate valves, the handwheel to spin in the same direction with ordinary manual valve, namely clockwise closing, counterclockwise to open. In contrast to the bevel gear rotation.

To that end, Shenzhen Mech Valve Trading Co., Ltd. has successfully built a solid foundation and infrastructure for flanged gate valve manufacturing.
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