Different kinds of valves provided by the best valve manufacturers and suppliers are made of different materials including steel. Here, ball valves are no different than others as different materials are used to create ball valves. To define a ball valve, it is a quarter-turn valve used to control flow. It is a valve with a round disc – the sphere has a hole or port in the center. Being consistent at both ends of the valve, it creates a passageway so as to open the valve and pass the flow.
In different industrial processes and applications, ball valves are known to deliver reliability and long service life. Typically, a ball valve uses a rotary ball with a stem and a bore. The body of the valve can be designed in different materials like steel or forged.
Common characteristics of Ball Valves
The valve design ensures fire safety
To ensure fire safety, the valve body is made to connect with the ball and connecting surface. Also, the metal spiral wound gaskets are brought to use for fire safety functions. Further, the graphite ring is used to prevent the medium from leakage.
Low flow resistance
Whether to use the full port, regular or reduced port, the ball valves ensure no or low flow resistance. What is behind making the particle resistance the same as friction resistance is the same passage diameter and pipe diameter of the ball valve. This makes the full-port ball valve offer the lowest flow resistance over the other available kinds of ball valves.
Anti-static design
This structure comprises a stainless steel ball with a small diameter and a spring that is too small in size. A kind of hole placement is done at the end of the valve stem while other is done on the cylinder of the valve stem. The objective is to maintain the desired contact with the valve body so as to keep the possible static electricity away from the body.
Sizes and sealing
While working on an industrial application, it is important to make the right choice for the china ball valve to make it fit well in the perfect space. The typical sizes available in the market range from ¼ to48 inches, depending on the specific need, the right choice can be made.
For sealing, most of the component used is fabricated from bendy substances inclusive of polytetrafluoroethylene, PTFE. Sealing detail combined with metallic and non-steel substances is known as tender sealing. Well, the effectiveness of soft sealing is possible to maintain, and it requires low machining precision and a tough surface.
What is a stainless steel ball valve?
When it comes to the working principle of the stainless steel ball valve, it works just like the ball valve. The stainless steel ball valve is the same as a kind of quarter-turn valve with a spherical ball placed in a passageway through which fluid flows are made feasible.
The hole or disc lets the valve open and close. Placing the ball in this manner makes the fluid flow at the open valve position. On the contrary, in the perpendicular passageway, no movement for fluid in the close valve position.
Stainless Steel is very corrosion resistant, extremely strong, and is commonly specified for high-temperature applications. Its cost is somewhat higher than carbon steel, although less than other steel alloys.
1. Stainless Steel 304 Ball Valve is generally suitable for mediums such as steam, non-corrosive gas, petroleum, and related products whose working temperature is between -196~650℃; and corrosive medium whose working temperature is between -30~200℃. Our SS 304 /CF8 Ball Valve has excellent atmospheric resistance, can withstand nitric acid and other oxidizing media, and is also resistant to corrosion by alkali, water, salt, organic acids, and other organic compounds. However, it is not resistant to the corrosion of non-oxidizing acids such as sulfuric acid and hydrochloric acid, nor is it resistant to non-drying hydrogen chloride, oxidizing chlorides, and organic acids such as oxalic acid and lactic acid.
For your better understanding of SS304, please note its casted grade is ASTM A351 CF8 / AISI 304/ DIN 1.4308, while the forged grade is ASTM A182 F304 / DIN 1.4301.
EG Valves also supply 304L/CF3 cast stainless steel ball valves as well, and their casted grade is ASTM A351 CF3 / AISI304L / DIN 1.4306. Meanwhile, our forged stainless steel 304L body’s grade is ASTM A182 F304L / DIN 1.4452.
2. The Stainless Steel 316 Ball Valve body containing 2%~3% molybdenum based on 304 has better corrosion resistance than 304 series stainless steel. Its corrosion resistance in non-oxidizing acid, hot organic acid, and chloride. It is better than chromium-nickel stainless steel and has better pitting corrosion resistance. Now more clients select our SS316 Ball Valve due to the consistently fine quality & reasonable prices.
For your better understanding of SS316, please note its casted grade is ASTM A351 CF8M / AISI 316/ DIN 1.4408, while the forged grade is ASTM A182 F316 / DIN 1.4401.
EG Valves also supply 316L/CF3M cast stainless steel ball valves as well, and their casted grade is ASTM A351 CF3M / AISI316L / DIN 1.4404. Meanwhile, our forged stainless steel 316L body’s grade is ASTM A182 F316L / DIN 1.4435.
3. 321 and 347 series stainless steel containing titanium or niobium have strong resistance to intergranular corrosion. If an application has this special requirement, then you should select our SS321 or SS347 Ball Valves.
3.The 904L series stainless steel containing high chromium and high nickel has higher corrosion resistance than ordinary stainless steel. It can be used to treat sulfuric acid, phosphoric acid, mixed acid, sulfurous acid, organic acid, alkali, salt solution, hydrogen sulfide, etc., and can even be used for certain high-temperature occasions under these concentrations. But it is not resistant to the corrosion of concentrated or hot hydrochloric acid and wet fluorine, chlorine, bromine, iodine, aqua regia, etc. Although this demand is not too much, we also would like to introduce our 904L ball valves for your information.
Stainless steel ball valves have several advantages over other
kinds of valves:
● Using a stainless steel ball valve provides several benefits. To begin with, the full bore with a simple and lightweight structure has a very low fluid resistance. This makes it easy to install, maintain and repair or replace when required.
● Further, the ball of the valve and the seal are put in a close state, which makes the valve reliable and not easily eroded by the medium. The best part about stainless steel ball valves is their wide use in different industries for both regular operation and quick opening and closing functionality.
● Almost no cost to upkeep the valve, these valves are easy to use and easily regulate pressure, volume, or temperature irregularities.
● Since these valves are not complex, and comparatively low in price, these valves tend to lend themselves a long service life.
● The flexing seat design of ball valves provides a leak-tight seal for low and excessive strain systems. Featuring compact, most drift layout, low working torque, panel mounting, as well as the availability of pneumatic and electric actuators, the valves are compact, lightweight, and offer easy installation.
Depending on the above characteristics, the stainless steel ball valves find their usage in multi-purpose activities like as a shut-off valve for hot and cold water systems and compressing air devices.
The choice of valve material directly impacts the valve functionality, operation conditions, and even the friction between the mating components and wear intensity. The most common type of ball valve includes the Stainless Steel Ball Valves that are of preferred use in many industrial areas including mining, oil, and petrochemical
Efficiency
Stainless steel is one such reliable material for valves that can easily handle hot/cold temperatures and varying levels of pressure without causing any trouble. The material offers tensile strength and durability and can be used under a high amount of pressure and subsequent conditions. This aspect makes the material a reliable option that anyone can settle for.
Durability
Stainless steel as a material for ball valves offers a secure fitting, no matter where it is being installed. This characteristic leads to minimizing the issue of leakage which leads to more efficiency. The users can expect precision even without using it for quite a long time. Thereby, the ball valve like a connector shut off the fluid flow and gas, without bringing the need to reassemble or disassemble the pipes.
Corrosion-resistant
It is not easy to deal with corrosion parts more specifically those that come with water or fluid contact. This is where stainless steel gives an added advantage as the material resists corrosion and rust. The material ensures the capacity to withstand wear and tear made through such contact. More specifically in underwater applications and where there is maximum exposure to elements, the stainless steel valve is preferred as it decays the least and offers longer functionality.
Low maintenance required
The ball valve made up of stainless steel requires low maintenance because of the material’s non-reactive structure and corrosion resistance characteristics. In fact, the material offers high reusability with assuring maximum functionality for a longer duration.
Affordable
Irrespective of whether you use stainless steel ball valves for residential, industrial, or commercial piping, it will make you save more. Because stainless steel valves are cost-effective and long-lasting fittings that make the better choice for varied applications.
All these intrinsic qualities have made stainless steel a perfect choice to use in most industrial valve applications. The durability aspect and the cost-effective solutions provided by the material leave a compelling effect on the development of industrial valves.
Duplex Stainless Steel Ball Valve
Duplex stainless steels valves are usually selected for their high mechanical properties and good to very high corrosion resistance (particularly to stress corrosion cracking).
However duplex stainless steel valves are more expensive.
The duplex stainless steel valves are quite popular because of their excellent performance determined by the material used and structural characteristics of the valve. To understand the valve functionality, you need to understand first the features of the duplex steel. Well, this material is one of a steel kind that combines both the ferrite and austenite parts for a half in the solid solution. This aspect enhances the strength, durability and resists the corrosion associated with ferrites and austenite parts. This material differs from the more standard austenitic stainless steel and at the same time offers greater benefits to the users. For instance, type 304 offers greater yield strength in comparison to the other steel grades.
● The duplex stainless steel ball valve has a forged welding structure that allows non-destructive testing. Before being used, the material undergoes solid solution processing to come up with a solid product with a good appearance.
● The duplex stainless steel offers strong resistance to hydrogen sulfide and chloride corrosion. This wonderful wear resistance and corrosion resistance aspect help improve the service life of the valve.
● Fixed balls are used in duplex stainless steel valves. The pressure inserted on the sealing pairs is smaller than the ball which as a consequence reduces opening and closing torque. The close valve seat structure minimized the probability of spring failure caused by deposition and fouling.
● The material offers good dealing performance and high-temperature resistant performance. Further, the material achieves quite high strength after the deposition hardening process, which helps fulfill the requirements of the valves.
● Due to their excellent strength and cost-effectiveness aspect, the duplex stainless steel valves find their best uses in several industries including construction purposes, pollution control equipment, oil & gas exploration, and chemical processing industries. Further, a customization option is also available in these kinds of steel valves as per the thicknesses required and specific needs of the industries.
Different kinds of duplex steel valves
● Duplex steel ball valve
● Duplex steel butterfly valve
● Duplex steel choke valve
● Duplex steel Plug valve
● Duplex steel check valve
● Duplex steel needle valve
● Duplex steel gate valve
Made up of super duplex stainless steel, these valves find applications that require good strength and corrosion resistance. Unlike other kinds, the duplex valves offer uniform corrosion resistance to both organic and inorganic acids. Because of the high content of chromium in them, over 300 centigrade temperatures can bring embrittlement, but at decreased temperatures, the metal has better ductility than ferritic and martensitic grades. Here Duplex grades of stainless steel work right down to at least -50 stages centigrade.
Choosing the right ball valve for the job!
Depending on certain characteristics, a huge variety of ball valves are available in different materials. The most preferred materials are brass, bronze, lead-free, carbon steel, and stainless steel. Whatever the design selection is made, among one-piece, two or three-piece, full port, or regular or reduced port design, choosing the right material for any type and design is of utmost significance.
To make the selection part easier, it is best to decide the purpose or application whether industrial, commercial, or industrial and discuss your needs with the service provider.
Choose EG Valve for Stainless
Steel Ball Valves
Stainless steel valves and fittings are always reliable choices that offer good durability and can be used in any place of use. EG Valves is a reputed manufacturer and supplier of stainless steel valves along with the other valve types.
With over 20 years of industry experience, we ensure to provide the finest products with standards like API, DIN, BS, ANSI, ISO 9001, OHSAS, and API-6D. Visit us today at https://egvalves.com to get quality products at competitive prices.
