What is a High Performance Butterfly Valve?

High Performance Butterfly Valves use a disc offset from the seat center, hence the name Double Offset Butterfly Valve.

In this configuration, the disc is eccentric, or offset, from the valve seat. As the disc starts to rotate, it moves away from the seat instead of across it. This design actually uses the line pressure to help give it its seal. This feature allows the use of offset butterfly valves in high-pressure applications such as ethanol or HVAC. It generally uses PTFE or plastic as its seat material, but metal seats are also available to meet fire-testing specifications like API 607.

How does a High Performance Butterfly Valve work?

This valve operates using a handwheel/hand lever or actuator. A handwheel or hand lever is used in manual valves and it is where the operator applies force to start and stop the valve. The actuator is used in automatic valves to provide the torque needed to start and stop the valve. To open a high-performance butterfly valve, the stem is rotated for 90o degrees in the anticlockwise direction by the torque applied by the actuator or on the handwheel as necessary. At the same time, the disc rotates at the same 90o degree angle. This rotation forces the disc to align itself parallel to the fluid flow where it leaves an unobstructed path. To close the valve, the stem and disc are turned in the opposite direction (clockwise) for a 90o degrees angle only. This aligns the disc perpendicular to the flow path and then it stops any fluid crossing through the high-performance butterfly valve. These valves are also used in throttling applications in which the valve disc is rotated slightly to allow some amount of fluid to flow. High-performance butterfly valve manufacturers recommend the use of these valves in throttling applications if only there is a low-pressure drop.

Components of a High Performance Butterfly Valve

• Stem: The high-strength, one-piece stem is 17-4 PH Stainless Steel. The valve stem is standardized for the interchangeability of international actuators.
• Blow-out Proof Stem: A retaining ring is installed between the machined stem groove and gland retainer step.
• Adjustable Stem Packing: The stem packing system features easy access to adjusting hex head nuts without requiring the removal of the actuator. The system consists of a gland ring, a gland retainer, studs, hex head nuts, and lock washers. A 1/4 turn of the hex head nuts is usually all that is required should field adjustment ever be needed. Both hex head nuts must be evenly adjusted and not overtightened.
• Stem Seal: The stem seal system provides constant compression for a positive seal around the stem. PTFE packing seals the stem and a carbon fiber anti-extrusion ring contains the packing. Flexible graphite rings are available for high-temperature applications and are standard on fire-safe valves
• Stem Bearings: Top and bottom bearings, consisting of a 316 Stainless Steel shell with a TFE/glass fabric liner bearing surface securely supporting the stem. The stem bearings provide excellent resistance to corrosion and distortion from high temperatures and mechanical loading forces
• Taper Pins: Taper pins are precision fit into reamed holes.
• Disc: The disc has been engineered to maximize flow and minimize resistance providing a high Cv. Stainless Steel is standard.
• Internal Travel Stop: Designed to prevent travel of the disc and minimize possible seat damage, therefore extending the service life of the seat.
• Seat: Zeco offers a wide variety of seat options including a PTFE seat, reinforced PTFE seat, flexible metal seat, and a dual seat.
• Full-faced Seat Retainer: The retainer is firmly attached by bolts located outside of the sealing area, protecting the bolts from corrosion.
• Body: All body styles offer bi-directional sealing as standard to full ASME Class 150, 300, or 600 ratings. The extended neck allows for 2″ of pipeline insulation and easy access to stem packing adjustments and actuator mounting.

Applications of High Performance Butterfly Valves

High Performance Butterfly Valves are specially designed for applications in the chemical, hydrocarbon processing, pulp & paper, water & wastewater, and HVAC industries worldwide.

They have been successfully applied in extreme services, including high-temperature services, throttling steam control, polymerizing media, liquor service with entrained solids, high cycle industrial gas, process gas-off applications, paper stock isolation, vacuum pump isolation, corrosive chemical service (titanium construction), fire-safe refinery & chemical service, heat transfer service, and throttling hydrocarbon service.

Advantages of High Performance Butterfly Valves

• Reduced fugitive emissions through triple-leak protection of primary stem seal plus two optional secondary seals
• Increased capacity and improved flow control with low-profile, double-offset disc
• Improved personnel and plant safety per adherence to API 609 criteria for safe, reliable anti-blowout protection

Disadvantages of High Performance Butterfly Valves

• These valves are expensive compared to other butterfly valves.
• These valves open while the valve disc is in the fluid flow path which reduces fluid flow pressure.
• High-performance butterfly valves are suitable for throttling use only where fluid pressure drop is low.
• The sealing of these valves is poor compared to that of other valves like ball valves.

ZECO Valve is one of the Chinese largest and most respected manufacturers of high quality HIGH-PERFORMANCE BUTTERFLY VALVE. From Design, Engineering, Manufacturing, QC, and After-sales services, ZECO Valve provides a Total Solution to our customers helping to give them a competitive advantage in the marketplace.

Butterfly valves use a round disc controlled by a control lever or wheel to completely shutoff a pipe. When the lever is moved a quarter turn, the disc stands upright and perpendicular to the flow of fluids, closing the valve and blocking any liquid or gas from flowing down the pipe.

Leading High Performance Butterfly Valves Manufacturers

Butterfly Valves & Controls, Inc.

Butterfly Valves & Controls, Inc. has been a premier supplier of quality butterfly control valves and other related industrial components for 25 years. We carry only the best parts sourced from world-class butterfly valve manufacturers. Extended service life and safe operation are at the core of every valve manufactured/assembled. Our catalog includes a large selection of valves, actuators, controls, positioners, and more.

Emerson Electric Co.

Butterfly valves and other industrial valves and equipment have been manufactured by Emerson for more than 130 years. The corporation has established itself as the world’s leading maker and supplier of control valves, not just in America.

Emerson is well-known for being the finest. Their products are widely utilized in oil and gas facilities, as well as in virtually every other industry. Emerson’s proven track record of manufacturing valves with high accuracy and high-quality processes has made them stand out for years. They also have their own cryogenic testing laboratory where they test all of their valves using helium.

Flowserve

Butterfly valves, as well as seals, actuation, pumps, and instrumentation systems, are all available from Flowserve. Flowserve provides services to customers in the oil and gas, chemical, power, water, and general industrial sectors. The firm provides fluid motion and control services in 56 countries.

Crane

Crane Co. has over 165 years of expertise in the valve sector and is well acknowledged as a pioneer. The corporation is based in Stamford, Connecticut, in the United States. Butterfly valves are among the company’s top-of-the-line designed industrial products and solutions. Aerospace, hydrocarbon processing, electronics, chemical, petrochemical, power generation, automated commerce, transportation, and other sectors all employ their goods. North America, South America, Europe, Asia, and Australia are all served by Crane.

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What is a High Performance Butterfly Valve?

A high-performance butterfly valve is just an adjective, never a noun most people used. Let’s start with what is a butterfly valve. A butterfly valve is from a family of valves called quarter turn valves. Its name comes from a butterfly-type structure. The “butterfly” is a metal disc (normal, though now we have a plastic valve or other nonmetal material valve)mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is open, the disc is rotated a quarter turn so that it allows unrestricted passage. The position of the disc is affected from outside the valve.

Types of High Performance Butterfly Valve

There are different kinds of butterfly valves, each adapted for different pressures and different usage. ZECO, from china, is divided mainly into two kinds of valves.

Resilient High Performance Butterfly Valve

The resilient butterfly valve, which uses the flexibility of rubber or Teflon, PFA, or NYLON, has the lowest pressure rating. They have usually centered disc designs. Typically used for low pressure, normal temperature conditions.

Metal Seated High Performance Butterfly Valve

Usually, the other type is a metal seated butterfly valve, often appearing with a double eccentric design or triple offset design. It is developed from a traditional center line butterfly valve. Somebody calls it a high-performance butterfly valve, used in slightly higher-pressure systems, features a slight offset in the way the disc is positioned, which increases the valve’s sealing ability and decreases its tendency to wear. The valve best suited for high-pressure systems is the pericentric butterfly valve, which makes use of a metal seat, and is, therefore, able to withstand a greater amount of pressure, high temperature, and corrosive and aggressive chemicals. So-called “High Performance” butterfly valves offer zero leakage designs and have been applied in both the chemicals and hydrocarbon processing sectors.

High Performance Butterfly Valve vs Centerline Butterfly Valve vs Triple Offset Butterfly Valve

The high-performance butterfly valve delivers heavy-duty, automatic throttling control flow for applications involving large flow rates and moderate pressure drops. It incorporates the two basic features of the high-performance butterfly valve types: a PTFE, RTFE, or metal seal ring instead of a liner and double offset (eccentric operation) to reduce seal friction and operating torque and provide superior performance compared to conventional butterfly valves.

Usually, these words are used to descript high-performance butterfly valves: High performance, low friction, low torque, metal seat(sometimes PTFE or RPTFE seat), eccentric design, long service life, suitable for aggressive condition, high-cost performance, bi-directional. There are no words to digital or data to define what is a high-performance butterfly valve. It is no apparent difference between high-performance butterfly valves and normal metal eccentric butterfly valves.

So are there any differences between a high-performance butterfly valve and normal metal eccentric butterfly valve?  Usually, a high-performance butterfly valve is machined by a CNC machine with high accuracy, especially some trim parts. It requires better quality control and material class. Many valve experts think the valve should reach some degree of service life. For example, pass 1 million times open close service life test.

Applications of High Performance Butterfly Valve

High performance butterfly control valves are intended for general service applications not requiring precision throttling control.

They are frequently used in applications requiring large sizes and high temperatures due to their lower cost relative to other styles of control valves. They work quite well for constant process load applications. Designs using characterized contour are able to expand the control range to that of a segmented ball valve.

Available end connection styles include wafer, lugged, and double flange.

In a word, high-performance butterfly valve is a word people describe valve with very good quality for high requirement application.

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As China has now become one of the largest butterfly valve exporters next to India, it is pretty confusing to pick one that will suit you the best. In fact, there are over a thousand valve company choices in China, spread in different provinces.

If you are looking for a reliable butterfly valve manufacturer yourself, you’re in the right place. In this article, we have compiled the best of the best butterfly valve manufacturers to help you pick the right OEM provider or butterfly valve supplier.

Where Can You Find Butterfly Valve Manufacturers in China?

To give you a tip, many butterfly valve manufacturers are in Zhejiang, Jiangsu, Guangdong, Henan, Hebei, and Shandong. These are the provinces in China specializing in metal manufacturing, forging and casting of different types of valves. Many of the companies below are based on these provinces, but you can still find other great manufacturing companies outside these provinces such as in Shanghai and Tianjin.

Here are the top 10 butterfly valve manufacturers in China.

#1 Jiangnan Valve Co., Ltd. – Butterfly Valve Manufacturer in Wenzhou

Jiangnan Valve Co., Ltd. has over 30 years of experience in the valve manufacturing industry. The company is a direct subordinate of Jiangnan Holding Group and has expanded largely throughout its history. Today, Jiangnan Valve is listed as one of the most prominent valve companies in China with over a hundred patents, 76 Million USD annual turnover, and an 88,000 Sqm factory.

Jiangnan Valve has been competitive both nationwide and worldwide, the company has strict quality standards conforming with API, ISO, CE, EN and ASME standards.

Jiangnan Valve Top Products:

• High-performance butterfly valve GSD
• Triple offset butterfly valve DTD
• Double offset butterfly valve DTDX
• Concentric butterfly valve CJD
• Butterfly check valve HBH
• Vacuum butterfly valve ZKD

#2 Neway Valve – Butterfly Valve Manufacturer in Jiangsu

One of the biggest industrial valve manufacturing companies in China is Neway Valve. The company has over 23 years of experience. You would want to contact this manufacturer if you want a streamlined production of butterfly valves. The company produces high-quality butterfly valves for high temperature and high-pressure applications for almost all types of industries.

Neway has an advanced manufacturing plant with a high-end valve program that covers thousands of valve production each day. They have three foundries and an advanced assembly line and testing facility. Neway also has one of the largest CNC machine plants in China. They have a well-rounded procedure and method for complete butterfly valve solutions, including repairs and spare part inventories.

Overall, the company’s stance is thriving with a brighter future as its stock status is constantly growing. And with the advent of more oil and gas and offshore projects in the next 5 years, you can expect Neway to deliver better and improved products.

Neway Best Butterfly Valve Products:

• Double offset butterfly valve
• Triple offset butterfly valve

#3 Hongcheng General Machinery – Butterfly Manufacturer in Hubei

Hubei Hongcheng General Machinery Co., Ltd has over 64 years of experience and is a leading valve manufacturing company in China. The company is popular for its high-end large-scale valve manufacturing factory with over 500 types of machinery and equipment for valve manufacture. Their valve manufacturing factory contains equipment like CNC plasma cutting machine, valve welding center, and advanced lathe and boring machines for butterfly valve manufacturing.

Hongcheng General Machinery has been very popular in the supply and export of hydroelectric, thermal, nuclear and irrigation valves. The company has sustained over 360 hydropower stations, 180 thermal power stations, 7 nuclear power stations, and 68 water conservancy projects worldwide.

Hongcheng top butterfly valve products:

• Butterfly valve for a hydroelectric plant
• Thermal power, high-performance butterfly valves (DN80~DN6000)
• Nuclear power butterfly valves (DN500~DN4000)
• Nuclear and water delivery valves (DN500~DN3000)

#4 Shentong Valve Co., Ltd. – Butterfly Valve Manufacturer in Jiangsu

Jiangsu Shentong Valve Co. has over 19 years of experience in manufacturing butterfly valves and other industrial valves. They are widely recognized in China and in other countries for supplying seawater butterfly valves, natural gas butterfly valves and many more. Shentong is also a prominent AWWA Butterfly Valve manufacturer. Shentong Valve is one of the top companies in the valve industry with a registered capital of RMB 0.208 billion.

The company has 109 patents and over 2000 products being actively supplied worldwide. One of the key highlights of Shentong is manufacturing valves under strict compliance with energy efficiency and reduced carbon emission footprint, which earned them respect in various groups. Hence, they’ve become one of the leaders in the butterfly valve workgroup in China (China Valve Association).

Shentong Top Butterfly Valve Products:

• Seawater butterfly valve
• High-pressure butterfly valve
• Hydraulic Control Butterfly Valve

#5 ZECO Valve Group Co., Ltd – Butterfly Valve Manufacturer in Shanghai

ZECO Valve is a valve company with 31 years of fruitful experience in delivering high-performance butterfly valves. They are one of the best butterfly valves manufacturers and have sustained many cities nationwide and worldwide. Through much effort and dedication to deliver quality products, ZECO Valve has strengthened its manufacturing techniques over the years.

In recent years, ZECO Valve has been steadily growing behind the limelight but has established repeat customers globally speaking. They have established customer relationships in Asia, Europe, the USA, and the Middle East. ZECO Valve is also one of the most prominent cryogenic butterfly valve manufacturers in China.

One of the key takeaways in working with ZECO Valve is that they focus only on a high-performance butterfly valve manufacturer so it’s not a “Jack of All Trades, Master of None” for this company. They also offer low priced products and sustain OEM needs. They have all types of butterfly valves ranging from different seat materials, sealing design, actuator type, end-connection type, and body material.

ZECO Top Butterfly Valve Products:

• Lug Style Butterfly Valves
• Wafer Style Butterfly Valves
• Double Flanged Butterfly Valves
• Soft Seated/resilient seated valves
• Metal seated
• Fire seated
• High-performance butterfly valve (WCB, CF8M, Duplex Steel, Hastelloy, Aluminum Bronze, Titanium Alloy)

For china butterfly valve with handles pricelist, please contact ZECO.

#6 WuZhou Valve – Butterfly Valve Manufacturer in Zhejiang

WuZhou Valve Co., Ltd is a 42-year old valve company with a strong portfolio and many honorary awards in China. As of today, they have two production facilities – in Wenzhou and in JiaXing, with an area of 125,900m2.

Currently, the company has two production bases – one in Wenzhou and the other in Jiaxing near Shanghai. The company has a developed design department with the latest tools for CAD design. WuZhou also has over 126 sets of machine centers, CNC machine tools, and metal cutting and machining equipment. Aside from this, they carry over 45 sets of chemical testers, nondestructive test equipment and other in-house equipment that made them capable of producing high-quality butterfly valves.

WuZhou has marketed over 1200 products across China and other countries such as the USA, Europe, Africa, the Middle East, and Singapore.

#7 Boteli Valve Group – Butterfly Valve Manufacturer in Zhejiang

Boteli Valve Group is a butterfly valve China manufacturer with over 22 years of experience. The company has heavily focused on casting and forging high-quality industrial valves such as butterfly valves. Boteli has served other companies worldwide on the oil & gas, refinery & petrochemical, power & pulp, LNG and Cryogenics sectors.

Boteli has a wide facility area coverage of over 26,600 square meters and a building area of 31,700 square meters complete with advanced test equipment. They are also known for supplying OEM needs with satisfactory customer support and after-sales service.

Boteli Top Products:

• Tri-eccentric butterfly valve
• Zero offset butterfly valve

#8 ZhengFeng Valve – Butterfly Valve Manufacturer in Zhejiang

Zhengfeng Valve is a Zhejiang valve manufacturer with over 21 years of experience. The company has been one of the leading exporters of butterfly valves in the oil and gas, chemical, and energy service industries. One of the biggest takeaways in working with Zhengfeng for your butterfly valve needs is their satisfactory attention to customers.

The company has undeniably good customer service, after-sales service, and repair and maintenance transactions over the years. The company also prides itself on the high-quality distribution of OEM products across the globe.

Zhengfeng products:

• Double eccentric butterfly valve, triple eccentric, and metal seal butterfly valves

#9 POV Valve Company – Butterfly Valve Company in Shanghai

POV Valve Company is a China valve manufacturer with over 17 years of experience in manufacturing soft seated butterfly valves. Over the years, POV has been one of the global leading companies with 12 invention patents.

The company has a wide array of advanced equipment for manufacturing butterfly valves. Their complete and reliable QC standards allowed them to win over thousands of customers in 80 countries worldwide. POV’s facility is certified by an ISO system certification and its products are guaranteed and have passed BV Marine, CE, and Fire Test. Thus, you can ensure quality exports of butterfly valves from POV Valve.

POV key products:

• Wafer butterfly valve
• Lug butterfly valve
• Flanged butterfly valve
• Lined butterfly valve

#10 Eco Valves – Butterfly Valve Manufacturer in Tianjin

Eco Valve has over 23 years of experience and is a popular China butterfly valve manufacturer. The company specializes in designing, manufacturing, and exporting butterfly valves for many industry applications. Outshine Valve also caters to OEM needs and customization.

One of the biggest takeaway in working with Eco Valve is that they focus only on butterfly valve manufacturing and development. They have over 50 product types and more than 1,200 SKU’s. The company is an ISO 9001:2008 System certified with a CE Quality-Assurance System Certificate for their butterfly valves.

Eco Valve Butterfly Valve products:

• Flanged butterfly valves,
• Centerline butterfly valves,
• Worm gear butterfly valves,

Wrapping Up

The demand for a high-quality industrial butterfly valve has urged many manufacturers to be more competitive in terms of quality, capabilities, price and customer service. Many China valve suppliers and manufacturers have upscaled their production schemes and have merged with international companies over the years in response to this competitive trend.

This evolution has also encouraged foreign companies to find valve manufacturers from China. If you are one of them, we hope that this article was able to help you choose a reliable butterfly valve manufacturer to supply your needs.

You may also like to read our 15 Best Triple Offset Butterfly Valve Manufacturers and 9 Best Stainless Steel Butterfly Valves Manufacturers.

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There are many SS Butterfly Valve manufacturers worldwide. As a buyer, you must choose a reliable butterfly valve manufacturer that can deliver high-quality stainless steel butterfly valves.

If you need to source the best manufacturers of stainless steel butterfly valves, you’ve landed on the right page. Here are the top stainless steel butterfly valve manufacturers worldwide.

Top Stainless Steel Butterfly Valve Manufacturers Worldwide

1# Zwick – Valve Company in Germany

ZWICK has over 30 years of experience in the design and manufacture of industrial valves, including stainless steel butterfly valves. The company has a large production facility and storage of over 16,000 sqm, allowing them to deliver bulk orders in time and cater to short-term orders. They are also open to butterfly valve customization. Other than stainless steel, they also manufacture duplex, super duplex, brass and alloy butterfly valves.

The company has produced tons of patented and unique valve designs making them one of the most reliable butterfly valve manufacturers in the world. The stainless steel valves they carry are used in Oil and Gas, Chemical, Petrochemical, and energy operations.

2# Kitz – Valve Company in Japan

KITZ is one of the most reputed valve manufacturing companies in the world. As one of the global industry valve leaders, KITZ holds a large product portfolio with high-quality valves. The company’s main utility markets are in the petrochemical and chemical processing industries. Hence, KITZ carries top-of-the-line stainless steel butterfly valves.

KITZ has over 76 years of experience in the design, innovation, and manufacture of quarter-turn valves, cryogenic valves, and other piping equipment. The company has a highly advanced manufacturing facility and manufacturing techniques. Their stainless steel butterfly valve manufacturers have sustained many power, oil & gas, refining, chemical, pulp & paper, marine, mining, LNG & cryogenics, and water & wastewater.

3# Hobbs- Valve Company in UK

Hobbs Valve has only 15 years of experience in valve manufacturing but has amazingly captured the global market for butterfly valves. They are one of the top stainless steel butterfly valve manufacturers in the world, as well as in other valve types. Aside from this, the company is a leading triple offset butterfly valve distributor. Hobbs Valve has sustained many projects in the oil and gas, power, chemical and petrochemical, alcohol, mining sugar, nuclear, and many industry sectors.

4# Kieselmann – Valve Company in Germany

Kieselmann is one of the top companies providing uncompromised hygienic, food-grade, stainless steel butterfly valves. The company has over 37 years of experience in piping system equipment and solutions. Kieselmann offers planning, manufacturing, and installation of valves for fluid piping systems. They have the highest regulatory standards in terms of quality control as they specifically target the pharmaceutical and biotechnology industry.

Hence, Kieselmann is a name known for top-quality stainless steel butterfly valves from Germany. To sweeten the deal, the company also offers 5-year warranties for all its products.

Best Priced, High-Quality Stainless Steel Butterfly Valve Manufacturers in China

If you are looking for a stainless steel butterfly valve manufacturer or supplier in China who offers high-quality valves at reasonable prices, here are some of the emerging companies in China offering low-priced stainless steel valves with high-quality seat, trim and body material.

1# ZECO Valve

With over 31 years of experience, ZECO Valve has been manufacturing butterfly valves. The company specializes in stainless steel butterfly valves, earning them fame in China and across other countries.

With its growth since being founded in 1991, ZECO has catered to and exported to Asia and the Middle East, Europe, and the USA.

Aside from the high-quality valves the company offers, ZECO provides stainless steel butterfly valves at a low cost. The company has established a facility fully developed for manufacturing almost all types of butterfly valves, with different seat materials, sealing designs, body materials, and actuator types.

Be free to ask for china butterfly valve with handles pricelist, ZECO Valve will offer competitive for you to win the project.

2# Jiangnan Valve

Jiangnan Valve Co., Ltd. has expanded largely throughout the company’s history, with over 30 years in the valve manufacturing industry. The Jiangnan Valve is listed as one of the most prominent valve companies in China, having a 76 Million USD turnover annually. The company has grown to have over a hundred patents and an 88,000 sqm factory.

A direct subordinate of the Jiangnan Holding Group, the company is competitive locally and internationally. With this, the company has strict compliance to quality standards conforming to API, ISO, CE, EN, and ASME,

Best Priced, High-Quality Stainless Steel Butterfly Valve Manufacturers in India

As India is also one of the top producers of Triple Offset Butterfly Valves, we have compiled the best manufacturers in the country who offers value-priced valves.

1# Dembla

Dembla is one of the top brands for stainless steel butterfly valves in India. With 35 years in the industry, Dembla is one of India’s companies practicing Lean Manufacturing. They have developed a working area of 40,000 sq ft with a streamlined production system which ensures an organized and efficient production.

Dembla is in demand globally for its stainless steel butterfly valves with its low cost and its capability for bulk manufacturing orders.

The company also heavily invests in R&D and third-party inspection to further improve their production, as well as Dembla’s valve products.

2# SVR Valves

Located in Coimbatore, India, SVR Valves is a leading manufacturer with over nine years in the export and supply of butterfly valves. They are prominent in supplying commercial needs, as well as in mechanical and fire protection installation service requirements. SVR Valves has sustained global exports in recent years, having a wide portfolio of industrial valve products and solutions.

Wrapping Up

We hope that this article has given you options on where to buy stainless steel butterfly valves. Stainless steel valves are a little more expensive than other types of valves because they are used in food and hygienic processing applications that’s why you need to choose a reliable manufacturer to supply your valves.

If you want more high-performance butterfly valve manufacturer options, you might want to read our 10 Best Butterfly Valve Manufacturers in USA and 16 Best Butterfly Valve Manufacturers in India.

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