Top mounted metal hard sealed butterfly valve S3XHD343H-10C

Top mounted metal hard sealed butterfly valve Purpose:

S3XHD343H-10C/S3XHD343H-16C/S3XHD343H-25/S3XHD343H-40P/R/RL top mounted metal hard seal butterfly valve is a butterfly valve that is easy to install and can be repaired online. When the valve needs maintenance, it is not necessary to remove it from the pipeline. With minimal time spent opening the upper cover, the valve stem and butterfly plate can be removed from the body cavity together for maintenance work, making maintenance more simple and convenient. At present, the hard sealed butterfly valves produced domestically and internationally are of the butterfly plate side mounted type; If there is a malfunction that needs to be repaired during use; The medium in the pipeline must be closed and the entire valve must be removed from the pipeline before maintenance can be carried out. The maintenance is difficult and time-consuming, and it affects the normal operation of the pipeline system; The top mounted metal hard sealed butterfly valve, when installed on the pipeline, can easily disassemble the valve body, butterfly plate, elastic displacement compensation valve seat, valve stem, and composite multi-layer elastic sealing ring. The biggest feature of this valve is that it can be inspected and maintained online after the pressure relief of the working condition device system. During maintenance, only the valve cover needs to be opened to lift out the butterfly plate and elastic moving compensation valve seat and other accessories for repair or replacement, without having to remove the entire valve from the pipeline. Reuse its valves to save energy. Suitable for pipelines with medium temperatures of -29 ℃ to 600 ℃ and nominal pressures ranging from 0.6 to 6.4MPa, including steam, oil, hot air, corrosive turbid water, coal gas, and other media containing small particles, easy crystallization, and corrosiveness, to achieve the purpose of cutting off fluids and regulating medium flow. It is mainly suitable for various industries such as gas, petroleum, chemical, power, and metallurgy.

Top mounted metal hard sealed butterfly valve product features:

1. The top mounted metal hard sealed butterfly valve is a top mounted structure. When the valve needs maintenance, it does not need to be removed from the pipeline. It is easy to install, has fast opening and closing, 90 ° reciprocating rotation, and small driving torque. It is used to cut off, connect, and regulate the medium in the pipeline, and has good fluid control characteristics and closing sealing performance.

2. The butterfly plate of the upper mounted metal hard sealed butterfly valve is designed with a streamlined shape, which reduces fluid resistance loss and increases the load surface of the valve body cavity, resulting in lower flow resistance and larger fluid load surface; High compressive strength. The valve stem shaft sleeve is made of self-lubricating tin bronze, with a low friction coefficient (<0.16) and flexible opening and closing.

3. The valve stem of the upper mounted metal hard sealed butterfly valve is a through stem structure, which has undergone special treatment and has strong wear resistance, good comprehensive mechanical properties and corrosion resistance, and very high abrasion resistance. When the upper mounted butterfly valve is opened and closed, the valve stem only rotates and does not move up or down. The packing of the valve stem is not easily damaged and the seal is reliable. Fixed with the butterfly plate cone pin, the extended end is designed to prevent the valve stem from bursting out in case of accidental breakage at the connection between the valve stem and the butterfly plate.

4. The butterfly plate sealing ring adopts a combination of soft and hard laminated metal sheets for sealing, which has the dual advantages of metal hard sealing and elastic sealing. It can withstand pressure in both directions, has reliable sealing, and has a long service life. It has excellent sealing performance in both low and high temperature conditions.

5. Valve body sealing surface; Adopting welded stainless steel and cobalt based hard alloy, the sealing surface is wear-resistant, heat-resistant, and has a long service life.

6. Adopting a three-dimensional eccentric sealing structure, the sealing surface of the butterfly plate only moves with the three-dimensional eccentric displacement when the valve is closedzuiAt the last moment, it leaned against the sealing surface of the valve body. Under the action of eccentricity, the sealing surface of the butterfly plate and the sealing surface of the valve body became tighter and tighter, so the sealing surface of the butterfly plate and the sealing surface of the valve body were in very good and close contact, achieving a very good sealing effect and reliable sealing performance; When opening the valve, under the action of eccentricity, the butterfly plate only needs to rotate a small angle (2 °~3 °), and the sealing surface of the butterfly plate and the sealing surface of the valve body will detach. There will be no friction between the sealing surface of the butterfly plate and the sealing surface of the valve body, and the service life of the valve is long.