The XDV fully Fluorine lined butterfly valve is designed for aggressive chemical and ultra-pure applications. Fluorine lined resists chemical attack from most known chemical compounds, and with a flexible liner design utilizing a full width, 360 degree, resilient back up liner offers bubble tight shut off in even the most demanding installations. Redundant shaft seals provide a tight, reliable seal to the environment. This is a "maintenance free" valve design which uses long life sleeve bearings and avoids the use of an adjustable packing gland. The valve shall be a 90 turn clockwise to close, non-jamming, resilient seated valve for zero leakage service. The valve shall be torque seated and designed in such a manner that the disc can be rotated the seat without the actuator. Also this valve enables the fluid perfect shut-off regardless of the flow direction.

Lined ball valve designed by XDV has 30 years of application experience and has continuously improved its products in more than 30 years. In its application field, item bodies excellent economy and reliability. It is suitable for cutting off corrosive and redox media such as acid and alkali and dangerous media, and for control, natural gas, oil products, chemical industry, metallurgy, urban construction, environmental protection, pharmaceutical, food and other industries. It is mainly composed of body, seat, ball, stem, driving device, etc.; The utility model has the advantages of small fluid resistance, compact structure, rapid opening and closing, reliable sealing, convenient maintenance and long service life.

XDV Lined Gate valve is one of the most common opening and closing valves. Wedge shaped gate valves sealed on both sides are used to connect or cut off the medium in the pipeline. Wedge gate valves are not allowed to be opened slightly as throttling devices in the pipeline, so as to avoid accelerating the damage of sealing surface due to the erosion of high-speed flowing medium. Lined gate valve is applicable to aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acids and strong oxidants of various concentrations, as well as strong alkali organic solvents of various concentrations and pipelines of other corrosive gases and liquid media.

XDV Lined globe valve has the advantages of compact structure, flexible opening and closing, strong corrosion resistance and short stroke. It is widely used as cut-off medium in petroleum, chemical and other pipeline systems. However, it should be emphasized that the flow regulation of fluorine plastic lined globe valve is strictly prohibited to prevent the high-speed medium flow generated at the throttle from eroding and damaging the sealing surface.

XDV Lined check valve only allows the medium to flow in one direction and prevents the fluid from flowing back. Usually, this valve works automatically. Under the pressure of flow in one direction, the valve disc opens. When the fluid flows in the opposite direction, the fluid pressure and the self weight of the valve disc or PTFE valve ball act on the valve seat, so as to cut off the fluid. It is applicable to aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acid sand strong oxidants of various concentrations, as well as strong alkali organic solvents of various concentrations and pipelines of other corrosive gases and liquid media.

XDV Lined plug valve is a valve that uses the plug body with through hole as the opening and closing part, and the plug body rotates with the valve stem to realize the opening and closing action. The plug valve opens and closes quickly and the fluid resistance is small. Because the movement between the sealing surfaces of the plug valve has the function of wiping, and the contact with the flowing medium can be completely prevented when it is fully opened, it can also be used for the medium with suspended particles. It is applicable to aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acids and strong oxidants of various concentrations, as well as strong alkali organic solvents of various.

XDV Lined diaphragm valve is lined with fluoroplastics on the valve body by special process, and the diaphragm parts are PFA / FEP and EPDM, so that all parts in the inner cavity of the valve can achieve the same corrosion performance. The product has good throttling characteristics, corrosion resistance and particle medium resistance, and reliable sealing performance. It can be widely used in various corrosive fluids, fibrous and powder media. It is applicable to aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acid sand strong oxidants of various concentrations, as well as strong alkali organic.

XDV High-temperature butterfly valve products are specially designed high-temperature regulating control valves with reasonable product structure design, easy operation, and reliable use. During operation, it is driven by worm gear, electric or pneumatic actuator to meet the needs of program control and remote control. The high-temperature control butterfly valve system has obtained a national patent. This product has mature technology and advanced structure. It has passed the Zhejiang Provincial New Product Appraisal, and has successively won national key new products, scientific and technological innovation funding projects, and national key Torch Plan projects.

The XDV high-temperature ball valve uses a new sealing material as the valve seat. Compared with hard-sealed ball valves of similar products, the service life can be increased by 3 to 5 times. It has the advantages of stable performance, reliable sealing, low friction, light switch, high temperature resistance, wear resistance, oil resistance, corrosion resistance, and long service life. Mainly suitable for high-temperature flue gas, engine exhaust, high-temperature mixed gas and other media.

The high-temperature bell valve is a specially designed bell valve in the XDV bell valve series; the product structure is reasonably designed, easy to operate, and reliable to use. The operation can be geared, electric, or pneumatic to meet the needs of program control and remote control. The products are widely used in high-temperature auxiliary lines for sulfur acid production, as well as high-temperature pipelines in smelting and petrochemical systems as control valves.

The angle bell valve is a specially designed angle bell valve in the XDV bell valve series. The product structure is reasonably designed, easy to operate, and reliable to use. The operation can be geared, electric, or pneumatic to meet the needs of program control and remote control. It is widely used in the control, regulation and cutting of flue gas and high-concentration dust gases such as non-ferrous smelting, ferrous smelting, power generation, building materials, light industry and other kilns, reverberatory furnaces, boilers, exhaust gas preheating systems, dust collection systems, etc. Ideal device.

XDV has researched and developed dozens of new XDSs alloys in combination with the needs of sulfuric acid industry. These alloy materials basically cover the materials required for each process of sulfuric acid production, and can meet the requirements of sulfuric acid production equipment. XDV XDSS alloy has been successfully applied from sulfur combustion to purification, conversion and dry absorption to HRS. Among them, the research and development of XDSS high silicon stainless steel for high temperature concentrated sulfuric acid is listed in the national Torch Development Plan. It has obtained a number of national patents and awards.