Flat gate valve is a sliding valve with a parallel gate as the closing element. The closing component can be a single gate or a double gate with a support mechanism in between. The clamping force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or floating valve seat. If it is a double gate flat gate valve, the expansion mechanism between the two gate plates can supplement this clamping force.

 

Structural features:

1. Adopting a floating valve seat, bidirectional opening and closing, reliable sealing, and flexible opening and closing.

2. The gate has guide strips for precise guidance, and is nickel phosphorus plated for erosion resistance.

3. The valve body has high load-bearing capacity, and the channel is straight through. When fully opened, it is connected to the gate guide hole and is similar to a straight pipe, with very low flow resistance. The valve stem adopts composite packing and multiple seals, ensuring reliable sealing and low friction.

4. When the valve is closed, the gate moves down to the bottom, and due to the pressure of the medium, the inlet sealing seat is pushed towards the gate direction, forming a larger sealing pressure ratio and thus forming the first seal. At the same time, press the gate onto the sealing seat at the outlet end to form a double seal.

5. The sealing parts are equipped with grease injection devices, which can be used for emergency sealing in case of valve leakage.