What Is V Port Ball Valve?

What Is Ball Valve?

The ball valve is a quarter-turn valve, it only needs to rotary the ball a quarter turn, thereby open or close the valve. Ball valves are used for on off or regulation.

Ball Valves Types

Ball valves can be divided into 2-way ball valves, 3-way ball valves and 4-way ball valves according to the direction of flow, which are used for on-off, mixing and diverter.
Ball valves can be divided into thread type, flange type, clamp type and welding type according to the connection method.

At the same time, according to the port types, the ball valve can be classified into full bore type, reduced bore type and V port type.

What Is a V Port Ball Valve?

If you need a ball valve that accurately regulates the flow rate, we would recommend the V port ball valve to you. The difference between the V port ball valve and the traditional ball valve is that the ball is a V-shaped port, and the common ones are 30°, 45°, 60° or 90° angles so that you can better control the flow.

Available in electric V-port ball valve and pneumatic V-port ball valve to help you control the flow rate remotely and locally.

Applications of V port Ball Valve

V port ball valve is suitable for applications that need flow rate regulation.

● Oil and gas
● Water treatment, water supply network, dam
● Irrigation
● Chemical industry
● Food and beverage
● And so on


Best Industrial Valve Manufacturers In Italy

Italy is one of the world’s top valve production bases and has many different types of valve manufacturers, which can meet the needs of most buyers around the world. In this article, we will list the top 5 industrial valve manufacturers in Italy to make it easier for you to search for suppliers.

COVNA is a Chinese brand but we have the valve equal to the Italian brand. If your project could accept a Chinese brand, welcome to consult us and get a free valve solution.

The Best Italian Ball Valve Manufacturer

Established in 1962, Perar SPA is Italy’s leading manufacturer of API6D and API6A ball valves. Its ball valve size ranges from 1/2″ to 60″ to meet your pipe size requirements. At the same time, the pressure rating of the ball valve ranges from 150Lbs to 2500Lbs and has various ball valves such as floating type, trunnion mounted type, and low temperature type. You could find the ball valve you need easier in Perar SPA.

The Best Italian Butterfly Valve Manufacturer

PetrolValves was founded in 1956, when it was only able to produce some small-sized valves. By 1965, PetrolValves had become one of the main valve providers in the oil and gas industry in Europe and the Middle East.
Its triple eccentric butterfly valve meets the SIL rating of IEC61508 and has passed the fire test of API607 and ISO10497. At the same time, the size of the valve ranges from 3″ to 112″, and the pressure rating ranges from Class 150 to 900 (PN10 to PN160) for your choice.

The Best Italian Gate Valve Manufacturer

Sitindustries Valvometal was founded in 1955, and its valve materials can be made of forged steel, cast steel, stainless steel, or alloys. Focus on providing valve solutions for the petroleum and natural industries, petrochemical industries, power plant industries, and food processing industries. And it has provided valve services for more than 50+ countries around the world.
The gate valve design complies with API6D, API 600, ASME B16.34, API 602-ISO 15761-BS 5352, and has passed the fire safety test API 6FA, API 607, ISO 10497.

The Best Italian Globe Valve Manufacturer

Founded in 1953, Firsa SPA is one of Italy’s leading globe valve manufacturers. Its products are widely used in chemical plants, petroleum plants, nuclear power plants, oil refineries, natural gas pipeline plants and so on. The globe valve conforms to the ANSI B 16.34 design, its size ranges from 2″ to 36″, and the pressure rating ranges from 150Lbs to 2500Lbs.

The Best Italian Check Valve Manufacturer

Metalvalves S.r.l. has 25+ years of experience in the valve industry and has top-notch technology and rich experience in flow control. Committed to providing high-quality valve solutions for energy, chemical, petrochemical, water treatment, transportation, and mining industries. The valves are in compliance with EU standards and API / ASME / ASTM / BS design standards.


Italy has many excellent valve manufacturers, and they can provide you with high-quality valves. I hope this article can help you find a suitable valve partner.


Top 5 Actuator Gate Valve Manufacturers In USA

The gate valve is used to transport and shut off the medium and it is one of the most commonly used valves at present. Widely used in various industries, such as wastewater treatment, mud industry, power plants, paper and pulp, etc.

In this article, we will list the TOP 5 actuator gate valve manufacturers in USA for your reference. Hope it could help you to select suitable valve manufacturers.

Tate-Jones has a history of more than 100 years and provides a variety of industrial products to help you solve fluid solutions. Tate-Jones produces gate ports, gate valves, round parts, peep sites, stocked glass and other products for your selections.
Its gate valves are available in threaded and flanged types and they are suitable for low-pressure applications.
Secondly, the gate valve of Tate-Jones has explosion-proof performance, which can be well used in the oil and gas industry.

Merit Brass was founded in 1937 and it is the leading manufacturer of fittings, valves and pipes in North America, providing you with one-stop procurement services.
Merit is mainly engaged in gate valves, check valves, ball valves, flanges, and various joints, and Merit is committed to providing customers with personalized solutions. At the same time, Merit is specialized at in-depth industry analysis to bring you cost-effective services.

Founded in 1949, Penn is mainly engaged in stainless steel industrial products, such as valves, pipes, plates and so on. Penn is committed to providing customers with the highest level of stainless steel products and processing services. Penn focuses on fast delivery and customized processing to meet the different needs of customers. If you have a request for customized products, welcome everyone to consult!

SharkBite has 20+ experience and is committed to providing customers with innovative services. Such as repairs, renovations, designing new projects and so on. SharkBite specializes in pipes, valves, and joints, providing solutions from meters to fixtures for countless applications.

Flsmidth was founded in 1882, has 11,700 employees, and operates in more than 60 countries/regions around the world. Flsmidth is committed to providing environmentally friendly and cost-effective solutions for the mining and cement industries.
Flsmidth’s product range is very wide, including industrial equipment, fittings, valves, pipes and so on.
If there is a demand for industrial products, you are welcome to consult!


Top 5 Actuated Butterfly Valve Manufacturers In USA

The actuated butterfly valve is used to transport and shut off the medium. More importantly, it can regulate the flow rate by adjusting the switch angle. The advantages of butterfly valves are easy to install, easy to maintain and save installation space. The size of the butterfly valve ranges from 2″ to 24″, and even larger. Therefore, it can be used well in various pipelines.

In this article, we will list the TOP 5 actuated butterfly valve manufacturers in USA for your reference. Hope it could help you to select suitable valve manufacturers to be your valve partner.

Flowserve has a history of more than 200 years, with 300+ offices around the world, more than 175,000 employees, and operations in 50+ countries/regions. So you can quickly and conveniently purchase Flowserve products locally. Flowserve has provided various industrial products for various industries, such as valves, pumps, seals, actuators, meters, etc., for more than 200 years. Focus on providing fluid solutions for the oil and gas, energy, chemical, and water treatment industries.

Founded in 1855, Crane Co. focuses on providing professional and sustainable solutions for demanding industries, such as aerospace, oil and gas, pharmaceuticals, and chemical industries. Provide reliable products for all major industries, including valves, pumps, pipes, meters and so on.

Crane also established a charity foundation to help people and animals in need around the world.

Anvil International and Smith-Cooper International merged in 2019 to form ASC Engineered Solutions, providing precision valves, pipes, fittings and professional services for global industries.

ASC has extensive experience in providing reliable solutions in various fields, such as energy and power, fire protection, food and beverage, mining, automated machinery, oil and gas, and so on.

Founded in 1901, Milwaukee Valve is a manufacturer of pipes and valves for domestic and industrial use. There are more than 5000 kinds of products, which are used in a very wide range of applications and industries. Including gate valves, globe valves, check valves, ball valves, butterfly valves, actuators, etc. Committed to providing high-quality, reliable and personalized valves

Hayward Flow Control was established in 1923 and has 60+ years of experience in industrial thermoplastic valves and fluid control. Hayward Flow Control has passed the ISO9001:2015 certification, and all production processes strictly abide by the ISO quality policy.


TOP 5 Automated Butterfly Valve Manufacturers In Italy

Here we will list 5 automated butterfly valve manufacturers in Italy for your reference. Hope it could help you know and select the suitable valve supplier.

MEI VALVOLE INDUSTRIALI was established in 1985 and is committed to using innovative technology to design and manufacture valves and deliver flow solutions to different applications. The company has 4 production lines to meet the needs of different applications. Including black line, green line, white line and red line.
Black line: Damper butterfly valves mainly used in smoke and high temperature applications
Green line: Butterfly valves mainly used in the chemical industry
White line: Sanitary butterfly valve mainly used in medicine and food
Red line: Mainly engaged in industrial butterfly valves, such as oil and gas, water treatment, shipbuilding, etc.

GEP VALVES was established in 1996 and has 25 years of experience. GEP has the most comprehensive valve models in Italy, which can meet the needs of most industries. Products have obtained CE, ATEX certification and PED approval.
Its products can be used in petroleum, petrochemical, chemical, automated machinery, pharmaceutical, energy, water treatment and other industries.
Besides, GEP can also provide pneumatic/electric actuators for butterfly valves, allowing you to control the flow more automatically.


ITE valve is a company specializing in providing valves, meters and equipment for oil and gas. Founded in 1979 and headquartered in Venice, Italy. Production, assembly, and testing are all carried out at the headquarters. 100% made in Italy. Products comply with ANSI, ASME, API, UNI standards.
What’s more, ITE valve also provides ball valves, check valves, flanges, manifolds and other industrial products.

Metalvalves has a history of more than 25 years, focusing on providing on off valve and control valves for the energy, chemical, petrochemical, water treatment, mining and other industries. Products are in line with EU standards and have EN certification.
In addition, Metalvalves has also obtained API/ASME/ASTM/BS international standards.
Metalvalves also provides ball valves, control valves, gate valves, globe valves, and check valves, which are used in different industries.

Vimec Group was founded in 1967 and its headquarter is in Bergamo, Italy. Products include valves, meters and industrial accessories. Such as floating ball valve, trunnion mounted ball valve, high performance butterfly valve, check valve, etc.
Vimec Group focuses on providing high-quality industrial products for heavy industries such as oil and gas and chemical industries.


3-Piece Ball Valves VS 2-Piece Ball Valves

Ball valve is currently the most widely used valve, it can be made into different types to be suitable for different industries. For example, it can be made of stainless steel, plastic, brass and so on.

In this article, we will introduce you to the difference between a three-piece ball valve and a two-piece ball valve, hoping to help you understand and choose a better valve.

What is a three-piece ball valve?

The three-piece ball valve is composed of a pair of connecting ends and the main body, which are combined by these three parts. The end cap can be threaded, welded, flanged, or clamped to connect to the pipeline. It can be made of stainless steel or carbon steel.

The a dvantage of the three-piece ball valve is that it is easy to disassemble. So that the central body can be maintained and cleaned without affecting the entire pipeline. For example, when the valve body is blocked, we only need to untie the bolts of the ball valve, take out the actuator and the center body, and then clean and maintain it. After cleaning, we can put the center body and the end cap together with bolts. We do not need to disassemble the entire valve from the pipeline, which greatly reduces our maintenance costs.

Secondly, most of the three-piece ball valves are full-bore designs, which can allow more flow to transport. Widely used in water treatment, wastewater treatment, seawater treatment, and so on.

What is a two-piece ball valve?

The two-piece ball valve is composed of two parts, which are assembled by bolts. They can be threaded connections, flanged connections or welded connections to meet different pipeline requirements.

The two-piece ball valve is tight and reliable. It has a good sealing performance, which reduces the possibility of leakage. If the valve is blocked, the entire valve needs to be removed from the pipeline for cleaning. This might make the repair cost increase. Suitable for flow rate control of water, steam, air, and so on.

covna threaded ball valve

In fact, there is little difference between the two-piece ball valve and the three-piece ball valve, both of which are used for start, on-off, and flow adjustment. But compared with the two designs, the three-piece ball valve is more able to withstand high-pressure applications and is more convenient for maintenance.

COVNA two-piece ball valve and three-piece ball valve can be driven manually, electrically or pneumatically, which perfectly meets the needs of your different industries. If you need more information about COVNA valves, please feel free to contact us at

5 Types Of COVNA Industrial Valves

In this article, we will introduce the 5 types of industrial valves for your reference. And hope this article could help you to know and select the right valve for your project.

Ball Valve

The ball valve is one of the quarter-turn valves, which can be opened or closed only by turning 90 degrees rotations. It is mainly used for start, shut-off and regulate the flow rate of fluid.

Features Of Ball Valves
Easy to operate and easy to repair
A variety of designs, applied in different industries
A variety of materials can meet your media requirements

Disadvantages Of Ball Valve
The size range is small, and the large-size ball valve is costly

Ball valves are suitable for smaller pipes. Mainly used for low pressure applications, if you need to use in high temperature or high pressure industries, you may need to customize the ball valve for your applications

Butterfly Valve

The butterfly valve is the same as the ball valve, it only needs to turn a quarter turn to open or close. When the valve is opened, the disc and the medium remain parallel. When the valve is closed, the disc and the medium remain vertical.

Features Of Butterfly Valves
Compact design, saving installation space
Easy to install
Large size range for various pipeline

Disadvantage Of Butterfly Valves
Not suitable for high pressure applications unless use the hard seat butterfly valve, but its cost is higher

Butterfly valves are very suitable for large-size pipelines, such as wastewater treatment, power plants, etc.

Check Valve

Check valve is a valve that can be opened and closed by relying on internal pressure. It is mainly used to prevent backflow and protect project safety.

Features Of Check Valves
Simple design and easy to operated
Multiple materials to meet your requirements of mediums
Disadvantage Of Check Valves
Not suitable for start, shut-off or regulating.

Gate Valves

The gate valve is mainly used to circulate and cut off the medium. Since it can only be fully open and fully closed, the flow cannot be adjusted.

Features Of Gate Valves
Can be used for two-way circulation
easy to use
Suitable for large size pipes

Disadvantage Of Gate Valves
Not able to regulate the flow rate

Globe Valves

The globe valve is similar to the gate valve in that the valve stem does linear movement to open or close the valve. The difference is that the stop valve can be used to circulate, cut off, and adjust the flow.

Features Of Globe Valves
Able to help to regulate the flow rate
Easy to install and easy to operate

Disadvantages Of Globe Valves
Not suitable for high pressure applications

The above are the 5 industrial valves provided by COVNA. Hope to help you understand and choose the valve, and better apply it in your project.


What Does WOG Mean?

We often see many marks on the valve body, such as PN16, DN50, WCB, etc., and there is another one called WOG, which is actually the abbreviation of Water, Oil, and Gas. In this article, we will introduce the meaning of 1000WOG, hoping to help you better understand and purchase.

What does WOG mean?

WOG is the abbreviation of Water, Oil, Gas, which represents the maximum pressure that this valve can withstand per square inch. For example, 1000WOG means that the valve can withstand a pressure of 1000PSI, which is approximately equal to 68.9bar. If the 1000WOG valve is applied to applications higher than 68.9bar, it may cause permanent damage, which may lead to accidents and hinder engineering production efficiency.

The importance of marking

In addition to WOG, other marks will be engraved on the valve body to show different functions.

Valve body size: DN is generally used to indicate the size of the valve body. For example, DN50 means that the size of the valve body is 50mm
Flow direction: Generally, an arrow is used to indicate the flow direction of the medium. When installing the valve, pay attention to the flow direction. otherwise, the valve cannot be used normally.
Body material: We will use CF8, CF8M or WCB to represent whether the body material is stainless steel or carbon steel
Pressure rating: If you see the number 150 on the valve body, it means that the valve body can withstand the pressure of ANSI 150Lb. PN10 means 10bar and 10K means JIS10K.


WOG and other marks are to enable you to understand and use the valve correctly. If you have any questions about the marks on the COVNA valve body, please feel free to contact us at