Triple eccentric butterfly valves are widely used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction to regulate flow and cut off media. Its characteristics are simple structure, easy transportation, installation, and disassembly. 90 ° opening and closing, quick switching. Friction free closure, good sealing performance, long service life, and can achieve zero leakage. Select different Material of components, which can be applicable to multiple media.

This product has the following structural characteristics:

1. The center of the valve stem has an eccentricity in the vertical direction of the pipeline relative to the center of the butterfly plate, and the sealing surface of the valve stem center relative to the butterfly plate has an eccentricity in the horizontal centerline direction of the pipeline; The sealing surface of the butterfly plate is deflected at an angle relative to the center of the valve stem; In this way, when the valve is opened, the sealing surface of the butterfly plate can quickly detach from the sealing surface of the valve body, reducing mutual friction. When it is closed, it can become tighter and tighter without exceeding the limit.

The sealing surface material of the butterfly plate is composed of stainless steel sheets and graphite sheets stacked together. This structure can effectively prevent the influence of small solid objects in the medium and the sealing surface from biting due to thermal expansion. Even if there is minor damage, there will be no leakage.

3. As the sealing surface of the butterfly plate is independent of the butterfly plate, the sealing surface of the butterfly plate can be replaced. When the sealing surface of the butterfly plate is damaged, only the sealing surface of the butterfly plate needs to be replaced. This not only greatly reduces maintenance costs, but also greatly reduces repair time and maintenance intensity and difficulty.

4. The butterfly plate sealing pair adopts a bolt elliptical distribution fixing method, which not only has precise positioning, but also ensures that each bolt is evenly stressed, eliminating the loosening and leakage of the sealing pair caused by uneven stress distribution.

Performance parameters:

Nominal Size:

DN50~DN3000、NPS2~NPS48

Nominal Pressure:

PN6~PN25/Class150~Class300

Valve body Material:

Q235A/WCB/CF8/CF8M

Operating temperature

Suitable medium:

Water, oil, gas, etc

Design and Manufacturing:

GB/T 12238/API 609

Connection method:

Clamp, lug, double flange

Flange size:

JB/T 79/GB/T 9113/GB/T 20592/ASME B16.5/MSS SP-44

Operation method:

Manual, gear, pneumatic, electric

Structural length:

GB/T 12221/ASME B16.10

Inspection and Testing:

GB/T 26480/API 598