Resilient Seat Butterfly Valve

The butterfly plate of the elastic butterfly valve is installed in the diameter direction of the pipe. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When it rotates to 90°, the valve is fully open.

Butterfly Valves

• The characteristic of the elastic butterfly valve is that the valve seat sealing ring is composed of multiple layers of stainless steel sheets on both sides of the soft T-shaped sealing ring.

The sealing surface of the valve plate and the valve seat is an oblique cone structure, and the temperature-resistant and corrosion-resistant alloy material is overlayed on the oblique cone surface of the valve plate; the spring fixed between the adjusting ring pressure plate and the adjusting bolt on the pressure plate are assembled together. This structure effectively compensates for the tolerance zone between the sleeve and the valve body and the elastic deformation of the valve stem under the medium pressure, and solves the sealing problem existing in the valve during the two-way interchange of medium transportation.
The sealing ring is composed of soft T-shaped multi-layer stainless steel sheets on both sides, which has the dual advantages of metal hard sealing and soft sealing. It has zero leakage sealing performance regardless of low or high temperature conditions. Tests have proven that when the pool is in a positive flow state (the medium flow direction is the same as the butterfly plate rotation direction), the pressure on the sealing surface is caused by the torque of the transmission device and the effect of the medium pressure on the valve plate. When the forward medium pressure increases, the tighter the squeeze between the oblique conical surface of the valve plate and the sealing surface of the valve seat, the better the sealing effect.
When in the reverse flow state, the seal between the valve plate and the valve seat relies on the torque of the driving device to force the valve plate to press against the valve seat. As the reverse medium pressure increases, when the unit positive pressure between the valve plate and the valve seat is less than the medium pressure, the deformation stored in the spring of the adjusting ring after being loaded can compensate for the tight pressure on the sealing surface of the valve plate and valve seat. Play an automatic compensation role.
Therefore, this utility model does not install soft and hard multi-layer sealing rings on the valve plate like the existing technology, but is installed directly on the valve body. Adding an adjustment ring between the pressure plate and the valve seat is an ideal two-way hard sealing method. . It can replace gate valves and ball valves

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