Top 5 Butterfly Valve Manufacturers In USA

The 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 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 Butterfly Valve Manufacturers In Italy

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 advantage 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.

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.

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

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


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.

Double Offset Butterfly Valves VS Triple Offset Butterfly Valves

In recent years, the use of butterfly valves has become more and more widespread. According to the material of the butterfly valve, it can be divided into stainless steel butterfly valve, cast iron butterfly valve, cast steel butterfly valve and plastic butterfly valve. According to the seals of butterfly valves, butterfly valves can be divided into soft-sealed butterfly valves and hard-sealed butterfly valves. At the same time, according to the eccentric type, butterfly valves are divided into single eccentric type, double eccentric type and triple eccentric type.
Although many people know the working principle of butterfly valves, there are still many people who have doubts about eccentric butterfly valves. In this article, we will try our best to explain to you what an eccentric butterfly valve is to help you choose a better valve in the future.


What is a double eccentric butterfly valve?

Its structural feature is that the axis of the valve stem deviates from the center of the butterfly plate and the center of the body. The double eccentric effect enables the butterfly plate to be released from the valve seat immediately after the valve is opened, which greatly eliminates unnecessary excessive extrusion and scratching of the butterfly plate and the valve seat, reduces the opening resistance, reduces wear and improves The life of the valve seat is improved.

Advantages of double eccentric butterfly valve

● Good sealing performance
● Long lifespan


● Double eccentric butterfly valves are widely used, such as oil and gas, HVAC, wastewater treatment, shipbuilding, food processing, etc.

What is a triple eccentric butterfly valve?

The structural feature is that the conical axis of the sealing surface of the butterfly plate is skewed to the cylinder axis of the body while the position of the axis of the double eccentric valve stem is eccentric. After the third eccentricity, the butterfly valve can withstand high temperature, high pressure and zero leakage.

Advantages of triple eccentric butterfly valve

Triple eccentric butterfly valve can be used in pipelines that require high pressure or high temperature


● Triple eccentric butterfly valves are widely used in industries that require high temperature or high pressure, such as oil refining, power generation, pulp and paper, chemical, petrochemical, etc.


Whether it is a double eccentric butterfly valve or a triple eccentric butterfly valve, it can be controlled manually, electrically, or pneumatically.

How Butterfly Valve Works

Butterfly valves are one kind of valve that are used to start, shut off, and control fluid flow. Widely used in various industries, including HVAC, power plant, water treatment, oil and gas, paper and pulp, etc. Due to the wide size of the butterfly valve, it is very suitable for use in large pipelines.

Source: saVRee

According to the design type, the butterfly valve can be divided into single eccentric butterfly valve, double eccentric butterfly valve and triple eccentric butterfly valve, suitable for application that has pressure needs.

At the same time, butterfly valves can also be made into wafer type, lug type, flange type and clamp type, suitable for different valve needs.
More importantly, the butterfly valve can be made into a soft seal type or a hard seal type, which is suitable for controlling different types of media.

Both butterfly valves and ball valves are industrial valves with a 90-degree turn. The butterfly valve is rotated by the handle or hand wheel, so that the valve stem drives the valve plate to rotate 90 degrees to open or close the valve.

Butterfly valve body: The valve body is used to cover and protect the internal parts of the butterfly valve. The valve body can be made of stainless steel, WCB, Cast iron or plastic to meet the requirements of different industries. At the same time, the outer edge of the valve body will have a linking method for linking with the pipeline for use in the project.

Valve plate: When the valve is closed, the valve plate will be perpendicular to the medium. When the valve is open, the valve plate is parallel to the medium. At the same time, the valve plate can be partially opened or closed, allowing a certain amount of medium to pass through, thereby playing a regulatory role.

Handle or actuator: The ISO5211 standard connection plate of the butterfly valve means that it can be driven by a handle or remotely controlled by an actuator.

We can provide pneumatic actuators and electric actuators for your choice. If you use an electric actuator, you can easily achieve the purpose of the remote control. If you use a pneumatic actuator, you can reduce the cost, and this operation is the fastest actuation way.