1. Adopt floating valve seat, two-way opening and closing, reliable sealing, flexible opening and closing.

2. The gate has guide bars to guide precision, and the sealing surface is spray welded hard alloy, erosion resistance.

3. The valve body has high load-bearing capacity, and the passage is straight-through. When fully opened, it is similar to the gate orifice and straight pipe, and the flow resistance is very small. The valve stem is made of composite packing and multiple seals, which makes the sealing reliable and the friction force small.

4. When the valve is closed, the gate moves down to the bottom. Due to the effect of medium pressure, the inlet seal seat is pushed to the direction of the gate, forming a larger sealing pressure, thus forming the first seal. At the same time, the gate is pressed to the outlet sealing seat to become a double seal.

5. Seal parts have grease injecting device, when the valve leaks, it can be sealed urgently.