Products
Metal Seated Ball Valve
Bergamo Valve has strong technical force, advanced production technology, stable quality, making contribution to the development of chemical, petroleum, our smelting, electric power industry. Over the years, always adhere to "quality first, reputation first, prompt delivery, and thoughtful service" purposes, products sell well all over the country, by the user praise. All products are used GB, HB, API, BS, DIN, JIS and other domestic and foreign advanced standards of production,according to the terms of use,users can choose different fluorine materials,also undertake various non-standard valves, equipment design and manufacture, anti-corrosion equipment will give your business to provide the ideal, so bring your business significant economic benefits. Our products are widely used in petrochemical, metallurgy, electric power, papermaking, pharmaceutical, construction and other industries and the long-distance pipeline project.
Why Choose Us
Our Factory
Bergamo valve has strong technical force, advanced production technology, stable quality, making contribution to the development of chemical, petroleum, our smelting, electric power industry. Over the years, always adhere to "quality first, reputation first, prompt delivery, and thoughtful service" purposes, products sell well all over the country, by the user praise.
Product Application
DIN, JIS and other domestic and foreign advanced standards of production,according to the terms of use,users can choose different fluorine materials,also undertake various non-standard valves, equipment design and manufacture, anti-corrosion equipment will give your business to provide the ideal, so bring your business significant economic benefits. Our products are widely used in petrochemical, metallurgy, electric power, papermaking, pharmaceutical, construction and other industries and the long-distance pipeline project.
Our Service
Good service(100% response and 24 hours on line ). Competitive price (Accuracy control the cost to achieve the best price). Advanced Technology ( Rich experience design and technology support). Excellent quality control (strictly follow the API/CE/ISO system and procedure). Perfect feedback (99% good favorable rate from customers).
Our Certificate
ISO9001, CE, API 6D, Fire certificate.
Related Product
In case of fire during the use of valve, the seat ring material like PTFE or other non-metal materials will be decomposed or damaged under high temperature may cause higher leakage. The fireproof seal ring between ball and seat so that after the valve seat is burn, the medium will push the ball rapidly towards the downstream metal seal ring to form the auxiliary metal to metal sealing structure, that can effectively control valve leakage.
The electric ball valve has a simple structure and is only composed of a few parts, saving data consumption; It is small and light with small driving torque, pressure regulating valve, operate simple and agile, and can be opened and closed quickly by rotating 90 °; At the same time, it also has good flow regulating and sealing performance. It is the main valve that used in the application of the field that is large-and-middle-sized and medium-and- low-pressured.
Temperature rang for cryogenic Ball Valve : -50~一196°C, The extend stem size according to customer request. The body cavity self pressure relief function at the valve seat to prevent the body cavity when the valve under abnormal temperature rise to retaining medium from damaging. On the upper part of the valve stem cap with the he seal on the valve stem is designed to reduce the influence of temperature change on the packing.
Cryogenic Extension Ball Valve
The cryogenic ball valves are always for cryogenic floating ball valves and cryogenic trunnion ball valves.If the ball valves the temperature higher than -50℃, the long neck structure is not designed. And if the ball valves with temperature lower than -50℃, the neck length can designed accord to standard requirements or can accord to user requirements.
For avoiding the wrong operation with manual back to started position quickly. Two-pieces or three-pieces structure are simple and easy to maintain, with full port and low flow resistance. Stainless steel ball material, reduce the parts wearing and the service. Life can be longer. PTFE sea or packing can be good sealing performance, when fully opened or fully closed will not easy to be medium corrosion or friction damage.
Valves are manufactured in 2 pieces bolted body, ball valves could be offfered as full or reduced bore, design for maximum rigidity against the pipeline thrust, valves can made from forged components or bar stock. Bolted body constructions can be easy service and maintenance opration on site,Valves can supply with lever operator,with gear box or bare stem on as customer request. And standard floating ball valves have below features.
Floating ball valves are in 2 pieces bolted body. Valve can be full and reduced bore, maximum rigidity against pipeline thrust design, Bolted body constructions allow easy service and maintenance operation on site, valve made from forged components or bar stock, Bolted body constructions can be for easy service and maintenance operation.Valves can supplied with lever operator,with gear box or bare stem on customer request.
Segment Ball Valves are mainly primarily designed for flow control, and it also be used for shut-off operation. The notched port on the segment ball have strong shear stress to cut media with fibers and particles. Segment Ball Valve is a good general control valve for industrial markets including Pulp and Paper, Refinery, Chemical, and Petrochemical Industries.
The ball valve has the same action of rotating 90 degrees, but the difference is that the cock body is a sphere with a circular through hole or channel passing through its axis. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a small torque can be closed tightly. The ball valve is most suitable for use as a switch and shut-off valve, but recent developments have designed the ball valve to throttle and control the flow.
What Is Metal Seated Ball Valve
Metal seat ball valve is designed for use in severe services such as high temperature, high pressure, and abrasive fluids found in Oil & Gas, Petroleum, Petrochemical, Chemical, Power Generation, Pulp & Paper, and Mining industries. Ball valves are designed with extensive safety consider-ations for users. Blow-out proof stems, provision of locking devices and prevention of misalignment of lever hand provide safe handling in the field and trouble-free operation in the plant. Antistatic devices, fire safe seal design and cavity pressure relief features all assure the economic benefits of smooth, steady plant operation. advancements in low emission design features contribute to the global battle against fugitive emissions while greatly reducing costs by product loss.
Advantages of Metal Seated Ball Valve
Increased Resistance To Erosion And Abrasion
The metal seat of ball valves is much more resistant to erosion and abrasion caused by fluids flowing through the valve. This makes them ideal for applications where the fluid contains solid particles or is highly corrosive, which could quickly damage or degrade the seat of a soft-seated valve.
Longer Service Life
Due to their resistance to erosion and abrasion, metal-seated ball valves tend to have a longer service life compared to soft-seated valves. This reduces maintenance and replacement costs, making them a more cost-effective option in the long run.
Greater Temperature And Pressure Range
Ball valves with metal seats are capable of withstanding extreme temperatures and pressures, which makes them suitable for applications where high performance is required under high temperature and pressure conditions. In contrast, soft-seated valves may have limitations in terms of temperature and pressure due to the nature of the soft seat material.
Increased Leak Resistance
The metal seats of ball valves offer increased leak resistance compared to soft-seated valves. This is because the hard seat material creates a more effective seal with the ball, preventing unwanted leakage and pressure loss.
Introduction to the Basic Knowledge of Metal Seated Ball Valve
The service temperature of O-ring sealed normal temperature metal seated ball valve is 一 29 °C 一〜200 °C, and the graphite sealed metal seated ball valve is -29 °C 〜425 °C. The specific service temperature depends on the shell material and sealing surface material. The valve seat adopts the elastic seal structure of bellows to effectively solve the leakage of sealing surface caused by the pressure and high temperature of the valve.
The low torque design of the valve effectively reduces the operating torque of the valve and prolongs the service life of the sealing surface. The moving parts such as valve seat, valve stem and ball are treated with surface wear-resistant technology to reduce the abrasion, abrasion and erosion of internal parts. The surface of the ball and the valve seat adopts the supersonic spraying technology, which improves the hardness and wear resistance of the sealing surface, thus improving the service life of the valve and broadening the working range of the valve
The valve sealing surface and overflow surface shall be sprayed with wear-resistant and anti-wear coating to reduce the erosion of medium metal parts and the sticking and corrosion caused by the accumulation of dirt in the medium
In the oil and gas industry, it can be used as a part of the control system of drilling rigs, platforms, and other equipment.
In the chemical industry, it is used as an important product in production lines and in other processes like refrigeration or air conditioning systems.
In the power generation industry, metal seated ball valves are commonly used to control the flow of water during nuclear fission reactions at nuclear power plants. They also play an important role during steam generation by condensing liquid water into steam within a heat exchanger or boiler through pressure drop across an expansion device (e.g., check valve). This process lowers overall energy consumption by reducing required pressure drops across various components such as pumps/valves/etc., thus saving money on operating costs overall!
Comparison of Metal Seated Ball Valves and Soft Seat Valves
Metal seated ball valves excel in the harshest manufacturing indoor environments, and valve shortcomings can seriously compromise safety, compromise high efficiency, and reduce gross profit margins. This durable metal seated ball valve is especially suitable for crude oil and natural gas, oil refineries and power utilities.
For ball valves, choosing the right seat material can be a difficult decision because you will have many choices. Key factors that must be considered when identifying elements include raw materials used in home construction, modest specifications and types of design features, including v-port numbers, exhaust pipes, dual bases, 1.2 or 3 pieces, etc., but more must be carefully considered. One of the reasons is the type of seating. First of all, you need to fully grasp the whole process and standard of valve application, which should be the basis for valve seat selection. Do you need to turn off the styrofoam in the valve? Is the liquid corrosive? Does it include abrasive particles? Is it under high pressure or constant heat? Once this element is firmly grasped, the choice is self-evident.
Compared with the soft seat valve, the specific feature of the metal seated ball valve is that it can withstand high temperature and severe operating standards. Metal seats tolerate extreme moisture, hydraulic shock, abrasive slurries and high temperatures up to 1000°f. They are also a satisfactory choice for highly corrosive or corrosive applications. Another major element is that the metal seat can be hardened according to a special coating.
Soft seats are usually made of thermoset components such as ptfe. This valve is suitable for places where organic chemical compatibility and sealing are required. As everyone knows, the soft seat does not feel comfortable to solve corrosive or dirty liquids. In such a case, the valve can crack, causing the valve to leak. The complexity of soft-seat valves is related to the objective fact that they cannot afford extreme use. On the other hand, metal seated valves can maintain normal operation in high temperature and extreme applications. Metal-seated ball valves are widely available for maximum shut-off specification and ongoing service. Compared to soft valves, this valve operates longer. This durable valve can usually handle most grinding applications.
For metal-to-metal seats, rubbing a variety of coatings can make the ball and seat ring harder and more resistant to wear in the sealing area, depending on the application standard. This unique coating includes synthetic hard surface coatings, carburized chromium, cobalt alloys and electrolytic nickel. Sealability based on metal contact between 2 hard-coated surface areas. Although the price of metal seated ball valves is relatively high, the use of soft seat valves should also take into account the damage caused by common failures and the cost of replacing soft seat valves. Compared with the service life, the high efficiency of the metal seated ball valve is more cost-effective. Metal-seated ball valves are the best, long-term, and economical choice for important applications.
Understanding Metal-Seated Ball Valve Coating Materials
Between the seat and the ball, there is metal to metal contact. This is how sealing is achieved by a metal seated ball valve. Unfortunately, galling occurs when even moderate pressure is present as similar hardness slide against each other. Eventually, the valve will seize up as the damage worsens. That is, if no coatings are applied. But with the right coating, a smoother sliding operation can take place between the seat and ball, reducing friction. Wear and damage due to thermal swings, cavitation, particle impact, erosion, abrasion, and galling will be reduced. The valve's operating torque is lowered by reducing friction in the trim.
Seat, ball, and valve body materials are selected based on chemical compatibility, temperature, pressure, and other factors. When choosing trim coatings, the same criteria must be considered. Instant failure could be the result of improper selection. But if you have unsuitable base materials, even the best trim coatings can't make up for that. Through proper coating and base material selection, the valve will meet the demands of the application.
Nitride and thermal diffusion – Diffused into ferrous metal surfaces such as martensitic stainless steel or carbon steels. In abrasive and high-temperature applications, useful for extending valve bearing surface life. Boride thermal diffusion – Diffused into the base material surface and can be used on numerous carbides, cobalt, nickel, and ferrous alloys. Erosion resistance and wear-resistance significantly increased. Well suited to abrasive and high-temperature applications as well as any time corrosion concerns and demanding material requirements are present.
CrC (chromium carbide) – Well-suited to extremely high-temperature liquid or gas applications. Superb resistance to corrosive media, erosion, and wear. WC-Co (Tungsten Carbide) – Extremely resistant to high cycle operations wear and erosion from powders, slurries, mus, and abrasive catalysts. Cobalt-based Alloy – Based on their individual suitability and properties, specific materials are applied, but multiple materials are used for coating. Individual properties can be based on part types such as bearings, shafts, plugs, and seats. NiBo (nickel boron) – Performs well in high-pressure and high-temperature applications. Extremely resistant to damage from thermal shocks, cavitation, and erosion. HCr (hard chromium) – Where most valves are concerned, this is a standard coating. It is suited to applications that are wide ranging in gases and liquids at moderate pressures and temperatures.
Our factory
Bergamo Valve has strong technical force, advanced production technology, stable quality, making contribution to the development of chemical, petroleum, our smelting, electric power industry. Over the years, always adhere to "quality first, reputation first, prompt delivery, and thoughtful service" purposes, products sell well all over the country, by the user praise. All products are used GB, HB, API, BS, DIN, JIS and other domestic and foreign advanced standards of production,according to the terms of use,users can choose different fluorine materials,also undertake various non-standard valves, equipment design and manufacture, anti-corrosion equipment will give your business to provide the ideal, so bring your business significant economic benefits. Our products are widely used in petrochemical, metallurgy, electric power, papermaking, pharmaceutical, construction and other industries and the long-distance pipeline project.
FAQ
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