Working principle and use of the product:
Ball valve is a ball with a circular channel as the opening and closing parts, the ball with the stem rotation to achieve the opening and closing action of the valve. The opening and closing part of the ball valve is a ball with holes, rotating around the axis perpendicular to the channel, so as to achieve the purpose of opening and closing the channel.
American standard floating ball valve in the pipeline is mainly used to cut off, distribution and change the direction of the flow of the medium. Applicable media: water, solvent, acid, natural gas, oxygen, hydrogen peroxide, methane and ethylene. Ball valve application: chemical, petrochemical, petroleum, paper, mining, electricity, liquefied gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment supporting, electronic industry, urban construction and other fields.
Product structure features:
1. The fluid resistance is small, and its resistance coefficient is equal to that of the pipe segment of the same length.
2. Simple structure, small volume, light weight.
3. Tight and reliable, the sealing surface material of the ball valve is widely used in plastic, good sealing, and has been widely used in the vacuum system.
4. Easy to operate, open and close quickly, from fully open to fully closed as long as the rotation of 90 degrees, easy to remote control.
5. Convenient maintenance, ball valve structure is simple, sealing ring is generally active, disassembly and replacement are more convenient.
6. When fully open or fully closed, the sealing surface of the ball and seat is isolated from the medium. When the medium passes through, it will not cause the erosion of the sealing surface of the valve.
7. Wide application range, small diameter to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied.
Working principle and use of the product:
Fixed ball valve work, the fluid pressure in front of the valve force on the ball is transferred to the bearing, will not make the ball move to the seat, so the seat will not bear too much pressure, so the fixed ball valve torque is small, seat deformation is small, sealing performance is stable, long service life, suitable for high pressure, large diameter occasions. Advanced spring preseat assembly with self-tightening features for upstream sealing. Each valve has two seats, each direction can be sealed, so the installation has no flow limit, is bidirectional.
Fixed ball valve in oil, natural gas, coal and ore mining, refining processing and pipeline transportation system; In the production of chemical products, pharmaceuticals and foodstuffs; In hydroelectric, thermal and nuclear power generation systems; In the water supply and drainage, heat supply, and gas supply systems of urban and industrial enterprises; In the drainage and irrigation system of farmland; It has been widely used in the gold treatment production system. It is an important mechanical product closely related to production construction, national defense construction and people's life. Ball valve closed in all kinds of pipeline systems used to cut off or connect the media flow, so that the media in accordance with the predetermined procedure to the specified point.
Product structure features:
1. The manual part can be made of steel plate pressed handle or stainless steel cast handle. The handle is provided with a limit structure to set a limit at the opening and closing positions of the valve. When the valve is used on the key device, the limit block is provided with a lock hole to lock the switch position to avoid misoperation. The handle is clearly marked on and off.
2, the valve stem adopts A182F(1Cr13) integral forging and modulation treatment, hardness up to HB220 ~ 250. The valve stem is connected with the handle by the flat key or spline or square seal, which is universal and easy to disassemble and assemble. The valve stem is provided with a blowout proof structure.
3, the packing of the valve uses braided, flexible graphite sealing ring or tetrafluoroene sealing ring, so that the valve stem can achieve reliable sealing under certain lubrication.
4, according to the need, the ball valve can be designed into an anti-static structure, in the ball and stem, stem and valve body between the conductive spring, avoid electrostatic igniting flammable substances, to ensure system safety.
5. Various seal forms. According to different working conditions can choose soft seal, hard seal, fire valve seat structure; The floating ball form is below DN150, and the fixed ball form is below DN200.
6, ball valve seat can be set at the auxiliary sealing structure, in the seat and stem parts of the grease valve, emergency can be temporarily sealed, and can be extended according to the need of the stem to bury the suitable laying place.
Working principle and use of the product:
Metal hard sealed ball valve is a high performance valve developed by our company. The valve seat adopts the metal sealing structure loaded by plate spring, which can open and close easily at high temperature. Ball and seat adopt special hardening treatment, sealing surface does not scratch. Ball valve has bidirectional sealing function. Small and medium caliber adopts floating ball structure (DN15 ~ 200mm), large and medium caliber adopts fixed ball structure (DN125 ~ 500mm).
Product structure features:
1, metal hard sealed high temperature ball valve with eccentric structure, in the closing process, the sealing pressure between the seat and the ball increases rapidly, so as to ensure the reliable sealing of the seal pair. When the valve is opened, the seat is quickly detached from the ball, effectively reducing the operating torque and minimizing the possibility of damage between the seat surface and the ball.
2, metal hard sealing floating ball valve adopts elastic loading structure, under normal closure to ensure the contact between the ball sealing surface and the seat seal, in high temperature conditions, can effectively compensate the internal thermal expansion, avoid due to high temperature and block, suitable for small and medium diameter high temperature applications.
3, metal hard seal high temperature fixed ball valve in addition to the eccentric characteristics of metal hard seal eccentric ball valve, other advantages in this also have business, in addition, it can be used bidirectional, and not easy to deposit dirt in the cavity, according to the user's working conditions, can also be set in the cavity sewage outlet.
4, metal hard sealed high temperature ball valve ball surface using special hardening treatment, the seat whole with special hard material or local surfacing hard material, to ensure that the seal between the proper hardness difference.
5, because the ball surface using special surface hardening treatment, the valve seat using surfacing carbide, so in the valve opening and closing process can be very good to withstand medium erosion, especially suitable for solid particles and abrasive media.
6, in addition to the ball surface and seat surface of the special surface treatment, in other sealing materials using flexible graphite, metal winding gasket, so can be used in high temperature, high pressure conditions, and fire resistance function.
Working principle and use of the product:
Traditional ball valve, whether floating or fixed, the ball and seat always contact, switching torque is large, sealing surface is easy to damage, rising stem ball valve opening and closing, the ball first deflected -δ Angle, and then rotation, the whole process of the switch ball and seat from, so the seat will not be chafed, and opening and closing torque is small.
Used in electric power, petroleum, papermaking, metallurgy, aerospace and other industries.
Product structure features:
1. No friction in opening and closing. This function solves the problem that the sealing surface friction affects the sealing of traditional valves.
2. Top type structure. The valve installed on the pipeline can be directly on line inspection and maintenance. It can effectively reduce the device shutdown and reduce the production cost.
3, single seat design. It eliminates the problem that the medium in the valve cavity affects the safety of use due to abnormal pressure boost.
4. Low torque design. Specially designed stem, only with a small wheel valve can be easily opened and closed.
5. Wedge sealing structure. The valve is sealed by the mechanical force provided by the stem, which presses the ball wedge onto the seat. The sealing performance of the valve is not affected by the change of pipeline pressure difference, and the sealing performance is guaranteed reliably under various working conditions.
6. Self-cleaning structure of sealing surface. When the ball tilts away from the seat, the flow in the pipeline will pass through the ball evenly along the sealing surface of 360°. Not only eliminates the high-speed fluid on the seat of the local scour, but also washed away the sealing surface of the accumulation, to achieve the purpose of self-cleaning.
Ball valve is mainly used to cut off or connect the medium in the pipeline, the lining material of the fluorine ball valve is F46, the shell is investment precision casting, high strength, smooth appearance, and the liquid contact part of all fluorine plastics, its characteristics have exceptionally strong corrosion resistance, long-term delivery of any concentration of acid, alkali, salt liquid medium long service life, no aging, no toxin decomposition, etc. Both the strength of carbon steel shell, and lined with fluorine material corrosion resistance, is the petroleum, chemical, rubber, plastics, pharmaceutical, paper, electroplating, smelting and many other industries the ideal choice.
Corrosion resistance lined ball valve main structural characteristics:
- Ball valve with fluorine plastic lining layer, with extremely high chemical stability, can be applied to any strong corrosive chemical media
- With full-diameter, floating ball construction, the valve can be closed without leakage throughout the pressure range, which facilitates ball sweeping and line maintenance of the piping system
- The ball of opening and closing parts is integrated with the valve stem casting (forging), which eliminates the possibility of the valve stem impacting the bearing parts due to pressure changes, and fundamentally ensures the safety of use in the project
- The structure is compact and reasonable, the body cavity space is minimum, reduce the medium retention, in addition, the special molding process, so that the sealing surface density is good, coupled with the herringbone PTFE packing combination, so that the valve to zero leakage
Corrosion resistance lined fluorine ball valve performance specification parameters:
- Nominal pressure: PN 1.6mpa
- Nominal diameter: DN15 ~ 300mm
- Body material: carbon steel/stainless steel (WCB/304/316/304L/316L)
- Connection mode: flange
- Operating temperature range: -80℃ ~ 150℃
- Applicable medium: liquid medium with concentration of acid, alkali and salt
