flat gate valve is suitable for natural gas, petroleum, chemical industry, environmental protection, city pipe, gas pipe, such as the ventilation system and steam storage devices, plate gate valve used for opening and closing device. Plate gate valve features: 1. Plate gate valve seat sealing structure of prestressing force should be flexible structure, and sealing seal seat up and down. Always face to face seal seats and seals. 2. Plate gate valve has self-cleaning function, the valve opening or closing will not be air directly flushing. Seats should by lubrication of abrasive materials. 3. The valve actuator failure will not affect the rest of the valve. Without dismantling the valve for maintenance and replacement. ( 1) Yoke sleeve - Aluminum bronze bushing is equipped with needle thrust bearing, to minimize operating torque. ( 2) Thread length of stent; Pin and spot welding; Stability. ( 3) Pressure seal - Simple structure with segmented retaining ring and mild steel silver plated gasket to aid disassembly and achieve the best bonnet seal. ( 4) Seat ring - Welding seat is perpendicular to the flow, easy to maintain. ( 5) Actuators - These valves can be equipped with electric, hydraulic or pneumatic actuators. Standard manual handwheel configuration under 12, oblique gear operator configuration above DN350. ( 6) Yoke - Fully assembled yoke after earthquake and testing, easy maintenance and actuator mounting. ( 7) Gland - Two-piece self-adjusting gland, avoid the pop-up. ( 8) One-piece rear seats - Hard surface, and the longest service life. ( 9) Disc - Spring loaded flap can change automatically and reduce actuator torque requirements. ( 10) Integral stop - Block is integrally cast stents, stent damper for registering position of assembly, make the chair more stable and reliable.

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