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
