Flat gate valves are suitable for natural gas, petroleum, chemical, environmental protection, urban pipelines, gas pipelines, and other transportation pipelines, venting systems, and steam storage devices, and are used as opening and closing equipment. The Z43 type single gate flat gate valve with diversion hole is suitable for long-distance pipelines for natural gas extraction and purification.
Features of flat gate valve:
1. The sealing structure of the valve seat should be elastic with pre tightening force, and the upstream and downstream sealing seats should be sealed simultaneously. The valve seat and seal are always sealed face-to-face.
2. The valve seat has a self-cleaning function and is not directly flushed by airflow during valve opening or closing. The valve seat should be made of lubricated and wear-resistant materials.
3. The malfunction of the valve actuator will not affect other parts of the valve, and maintenance and replacement work can be carried out without disassembling the valve.
(1) Yoke sleeve? Aluminum bronze yoke sleeve is equipped with needle shaped thrust bearings to minimize operating torque to the greatest extent possible.
(2) Valve stem? Thread length up to the bracket; Pin and spot welding; Has stability.
(3) Pressure seal? The structure is simple, equipped with segmented retaining rings and silver plated low-carbon steel gaskets, which helps to disassemble and achieve the best valve cap seal.
(4) Seat ring? The welded valve seat ring is perpendicular to the flow channel, making it easy to maintain.
(5) Execution mechanism? These valves can be equipped with electric, hydraulic, or pneumatic actuators. Manual handwheel with standard configuration below DN300, and helical gear operating mechanism with configuration above DN350.
(6) Yoke? The fully assembled yoke has passed seismic testing and is easy to maintain and install the actuator.
(7) Cover? Two piece, self-adjusting cover to avoid popping out.
(8) Overall rear seats? Hard surface, longest service life.
(9) Valve disc? The spring-loaded valve disc can adjust itself, reducing the torque demand of the actuator.
(10) Overall stop? The integral casting bracket stop device positions and assembles the bracket valve disc, making the valve seat more stable and reliable.
