We manufacture these unique, bi-directional, purpose-designed butterfly valves for the throttling of mining slurry or isolation of water service in power plant circuits. Most valves featured here are rebuildable to new specifications at our factory and are available with actuation of your choosing. A large inventory of our quality series 80, 120, and 150 valves are all on hand and ready for immediate service.

High Performance Butterfly Valves

If you do not see aAutomated Butterfly Valves that meets your specifications, pleasecontact our sales staffto inquire about your Automated Butterfly Valves requirements. Our reliability services are key to avoiding unplanned shutdowns, increasing yield and reducing costs. Unique construction features lead to very low pressure losses and excellent sealing. Provides your firm with the tools, resources and support you need to help you not only meet, but exceed, your clients’ expectations. It can help your firm deliver technical excellence, risk reduction, cost-effective solutions, application options and on-time performance to your clients. Every Siemens valve and actuator are tested from the factory line to assure longer performance and bubble-tight shutoff for 0% leakage.

parts of butterfly valve

Consequently butterfly valves are now commonly used in water distribution systems. Metallic sealing butterfly valves in double eccentric design have a flow-friendly mounted disc. Housing material made of steel or stainless steel is suitable for a wide variety of applications. This type of construction is widely used in the power plant sector, in chemical processing and in the industrial sector.

Butterfly valves

In the elastomer-lined butterfly valve, the axis of the valve stem passes through the center of the disc and the axis lies in the plane of the seating edge. This means that the stem passes through the seating edge of the disc. Consequently, special contours machined into the disc provide a sealing surface.
END CONNECTION TYPES
They can only be employed in the completely open or fully closed states and cannot be used to regulate or throttle the medium flow rate since accurate control is impossible. Butterfly valves are relatively simple in design and have only a few key components, which are the valve body, the disk, the valve stem, and the seat. A threaded butterfly valve has the same internal components as wafer or grooved versions, but both connections are threaded .

Butterfly Valves Manufacturer, Types Of Butterfly Valves

It can be used for flow control and regulation and on/off service. Recent developments have permitted this type of valve to throttle more accurately and perform well in high-temperature and high-pressure applications. This article presented information on butterfly valves, including the construction & key components, the different types, materials, relevant specifications, and advantages. A wide range of applications; Gate valves are incredibly adaptable, and they can be utilized with a variety of media, including steam, oil, and other liquids. In addition, gate valves can be employed in media with granular materials and high viscosity.
The Forbidden Truth About Types Of Butterfly Valve Unveiled By A Classic Professional
Thanks symbol for butterfly valve reading my article on various types of butterfly valves. These butterfly valves are used for dead-end service and generally have low-pressure ratings. It is a versatile solution because it is highly resistant to solvents and chemicals and can withstand extreme temperatures (such as 200° C). The flow control element is a disk of approximately the same diameter as the inside diameter of the adjoining pipe, which rotates on either a vertical or horizontal axis.

Guide to Butterfly Valves for Fire Protection

The discs open and close with a low torque rotation of 90 degrees for any compatible application. Because they are less costly and lighter, butterfly valves are often preferred over other types of valves. If you are a water treatment provider or water company and need to purchase a butterfly valve, please contact us. Butterfly valves are also available in many types of materials and combinations of materials for the body, disc and seat. Body material selection can be based on what type of fluid is to be shut-off, the temperature and pressure of the medium and system.
How Usually Does Your Parts Of Butterfly Valve Make Your Neighbors Say That
Butterfly valves are similar to ball valves but have several advantages. Automatic butterfly valves are extremely helpful with larger valves (butterfly valves have been produced as large as 200inches!), and come with fail-safe options like fail-open or fail-close . This ensures frictionless stroking throughout its operating cycle. Contact is only made at the final point of closure with the 90° angle acting as a mechanical stop; the Metal seated valve uses a triple offset design. There is friction between the disk and seat during the full operating cycle which is the disadvantage of a zero offset valve. A butterfly valve is a valve that isolates or regulates the flow of a fluid.

Butterfly Valves

Butterfly valves are easier to operate and reduce in faster opening and shut-off – only a quarter turn is needed to fully open and close the valve. This is due to their compact design which requires considerably less space, compared to other valves. A 90° rotation of the handle provides a complete closure or opening of the valve. Large Butterfly valves are usually equipped with a so-called gearbox, where the handwheel by gears is connected to the stem. This simplifies the operation of the valve, but at the expense of speed. The valve disc is always under pressure and can interrupt the flow even in an open position.

Butterfly Valve

The American-BFV® Butterfly Valve line is designed to provide long life, low headloss and trouble-free performance. Butterfly valves are available with conventional flanged ends for bolting to pipe flanges, and in a threaded end construction. For the pressure–temperature rating of globe-body control valves reference should be made to relevant standards. Double offset and triple offset butterfly valves are also bidirectional but with preferred flow direction, such as flow from the stem side.
7 Cut-Throat Butterfly Valve Drawing Tactics That Never Fails
PN in center-mounted valves, up to PN 40 in eccentric-operated valves. Butterfly valves; They perform their duties by cutting and opening the fluid passage by rotating 90 ° in the middle of the fluid passage hole of a flat disk that is centered or eccentrically. Specific gravity, viscosity, material content, the composition of the fluid to be handled. Insert the remaining flange bolts after aligning the valve with flanges and tighten bolts partially. Here you can download image data of our products to support your CAD or other professional documents.

How Butterfly Valves Are Used in Different Applications

Rotary valves constitute a derivation of the general butterfly valves and are used mainly in powder processing industries. But when it is in the rotation, the pockets allow dropping a defined amount of solids, which makes the valve suitable for dosing bulk product by gravity. Such valves are usually of small size , pneumatically activated and rotate 180 degrees back and forth. Concentric butterfly valves – this type of valve has a resilient rubber seat with a metal disc. NTGD Valve is a experienced double offset butterfly valve manufacturer, please feel free to send us mail if you have any inquiry.
Butterfly Valve Uses : The Ultimate Convenience!
This constitutes a substantial improvement over the previously described process, but still did not meet the specifications of the end-user. The flange rating should generally be in accordance with the piping class, but for carbon steel bodies the flange rating should be class 300 minimum. Prior to this divestiture, Qinex operated mostly as a stand-alone business. Our knowledge in the domain blended with the vast experience has enabled us to serve our customers with the best they need. And how to achieve versatility and sustainability through modularity?

The advantages, components and application of Butterfly Valves

This is most useful when trying to stop the fluid flow as it prevents any fluid from passing through the pipe when closed. A double offset type has the stem located at the back of the disc. This further limits the contact of the disc and the seat to about 1-3 degrees.
Why You Ought To Use This What Is The Function Of Butterfly Valve And Not That What Is The Function Of Butterfly Valve
Accordingly, the valve is used here to regulate the air flow towards the car’s engine. It can open and shut partially to control the amount of air flow through. They are used in refineries and in off-shore systems where extreme conditions are prevalent.

Butterfly Valve

The stem is mounted in a vertical axis at the center of the disk. ✓ VITON This elastomer has high thermal and chemical resistance and is therefore suitable for oils, chemicals or other higher temperature media. Was set up in 2000, is located in Tianjin in northern of China. We have the advanced machining equipment and coating processing line, We have our own Machining shop, painting shop and assembled shop. A quarter turn movement is needed to switch the valve from a fully open to a fully closed position . Hydraulic actuators can be operated semi-automatically or automatically.
Butterfly Valves Specifications ...
The main purpose of Wafer Butterfly Valves is to maintain a unidirectional pressure or positive pressure. Also, because of its cheaper price and easier installation procedure, many prefer this type of valve where it is economical and where other types of valve prices are out of the question. Wafer butterfly valves have a flexible seal that protects the system from backflows which occurs when bi-directional pressure occurs. Fire tight valves can be found on fuel gas applications, VRU systems and in other flammable systems. A butterfly valve, abbreviated as BTFLV, is a quarter turn valve (90° or less) with a circular disk as its closing element. The standard design has the valve stem running through the disk, giving a symmetrical appearance.