Pneumatic flat gate valve

Z643H气动平板闸阀

产品概括：Product Overview:
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 the airflow during the valve opening or closing process. 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.

核心结构与工作原理Core structure and working principle
Pneumatic actuator
Using compressed air to drive piston movement, the valve stem drives the gate to vertically rise and fall to achieve opening and closing; The dual cylinder design enhances thrust stability and avoids the problem of single cylinder jamming.
Standard manual switching device, can be switched to manual operation in case of gas source failure (switch handle to engage the opening and closing nut with the screw).
Flat gate sealing design
Bidirectional elastic sealing: Spring preloaded valve seat structure+floating gate design, with medium pressure pushing the valve seat tightly against the gate, achieving bidirectional sealing at the inlet and outlet (such as Z43H/X type).
Self cleaning function: The valve seat avoids direct flushing of the medium during the opening and closing process, and cooperates with grease injection to assist in sealing and extend the service life.
Wear resistant strengthening: The sealing surface of the gate is sprayed with hard alloy or tungsten carbide coating (such as CHAVEZ valve in the United States), which increases the wear resistance by three times and can withstand high wear media such as ash and mineral powder.
Installation dimensions and weight of Z643H pneumatic flat gate valve: