Applications. Lined butterfly valves rely on elastomers (rubber) and/or polymers (PTFE) to completely isolate the valve body and stem journal area from the corrosive and/or erosive effects of the line media. By isolating the valve body and stem with rubber or PTFE, it is not necessary for the valve body to be made of expensive corrosion-resistant materials such as stainless steel, Alloy 20 and C-276. If the valve is opened partially, it means that the disc will not be rotated a full one quarter turn, thus it cannot provide unrestricted passage. 0. A butterfly valve is a valve which can be used for isolating or regulating flow. Usually they are used in application fields 3. The most important one is the metal disc. Function: A butterfly valve is very versatile and may be used for isolating or regulating flows. Is the check valve installed in front of or behind the outlet valve? Butterfly valves are made of a number of components. A butterfly valve is a type of quarter turn valve. This metal disc is the one commonly referred to as the butterfly. Copyright © 1999 - 2019, All Rights Reserved - Valtorc International, ← The 4 Types of Ball Valves – Single Body, Split Body, Top Entry and Welded. The applicable medium includes oil products and acid-alkaline substances. Available in wafer (BVTT) or lugged (BLTT) design, ductile iron body, 316SS disc or HALAR / PTFE coated disc, 316SS stem, PTFE seat, 10-position notch plate & lever. Butterfly valves operate like other quarter turn valves. Then look down. Variants. If the pipeline needs to ensure the sealing performance, a triple eccentric butterfly valve needs to be used. A 90° rotation of the handle provides a complete closure or opening of the valve. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. When the valve is fully open, the metal disc or butterfly moves a quarter turn. In many occasions, because of the advantages of the butterfly valve itself, it has been possible to replace valves such as gate valves, globe valves, and ball valves in industrial piping applications. The butterfly valve can be used as a regulating flow, when the butterfly valve needs to regulate the flow under special working conditions, or in an environment where the sealing performance is strictly required, or the operating condition of the butterfly valve is severe wear, low temperature and other harsh work. Head Office Add: 2203-2206R. Skype: +86 150 0225 9955. The valve has the ability to start, stop or restrict the flow in a system pipeline and is used for repairs, cleaning or alterations of fluids when no fluid is running through the pipeline. The Butterfly valve series is available as Wafer- and Lug-Type in DN 25 - DN 700. This manual provides necessary requirements for It can partially open and close to regulate the amount of air passing through. Soft seal butterfly valve has a good sealing performance, applicable to the management requirements of   a completely sealed, leaking zero pipeline, soft sealing butterfly valve sealing performance is good, the disadvantage is affected by                            temperature, rubber soft seal butterfly valve working temperature is 0 -80°C,  working temperature of fluorine seal butterfly valve is between -10°C and 150°C. Butterfly valves cannot be used where a nonobstructed, full opening is needed. Butterfly Valves. It can cost you more. KEYSTONE SERIES GR RESILIENT SEATED BUTTERFLY VALVES GRW/GRL INSTALLATION AND OPERATION MANUAL YY D max./min. Enter your Email now to get our Free product brochure & Amazing magazines! Butterfly valves are used on all types of ships and firefighting apparatus. There are some which operate manually whereas others operate electronically depending on the system. 4. It is a linear motion valve used to start or stop fluid flow. Jianye Triumph Plaza, Zhongzhou Road, Luoyang City, Henan, China, Factory Add: No.37 Puhui Road,Beizhakou Economic Development Zone, Tianjin City, China PR. Find Valves. Butterfly valves are mainly used in waste treatment systems. Double-acting butterfly valves work great with Namure Solinoide valves, Both open and close functions require air resulting in faster actuation then spring return models. A butterfly valve is a type of quarter turn valve. Butterfly valves manual & pneumatically actuated. What are the functions and uses of different butterfly valves? Can the medium passing through the ball valve be cement? Amongst its many advantages are: less wear and tear of the axis, less friction resulting in less torque, a more economic actuator, etc. Double eccentric butterfly valve is  suitable for the opening and                    closing of ventilation and dust removal pipelines and is widely used in the  ventilation and dust removal pipelines in the metallurgical industry, light industry, power industry,  and petrochemical industry. This graph shows the Cv or Kv valve fraction vs opening and closing angle of a butterfly valve: The full closure curve of a butterfly valve is then the above graph multiplied by the valve’s flow coefficient or factor. There are many other components that form the butterfly valve. The closing mechanism is a disk that rotates. Butterfly valves are quarter turn valves. The design of this high performance butterfly valve is advanced compared to the other two. The short distance the disk must move from full open to full closed inhibits the “slamming” action found in some other types of check valves. the valves are available with different body types (wafer or lug type) and materials, they perfectly meet the requirements of diverse applications and processes. Please note, all Valtorc quotations are valid for 60 days. Butterfly valves are easy and fast to open. They are used in throttling service, particularly where large-size valves with automatic actuators are required. What is a threaded butterfly valve? Threaded Butterfly Valve. Email: sale@bundorvalve.com Soft seal butterfly valve  applicable medium is fresh water, sewage, seawater,  salt                         water,  steam, oil and other weak acid-base media. In essence, the movement of the disc will depend on whether the valve is open or closed either partially or completely. Due to the fact that . It can take up to 1200°F in heat or 1,480 PSI of pressure. Butterfly Valve Function. The Valve Company is the name trusted throughout Western Australia for supplying quality valves to commercial and heavy industry with reliable service and advice to match. The main function of these valves is to control the flow of liquids through a section of pipe. It not only  inherits the advantages of high temperature and high pressure of metal hard seal butterfly valve, but also has the excellent sealing performance of soft seal butterfly valve. When the valve … The resilient seat is mounted on the body of the butterfly valve in order to provide the proper seal. Grooved butterfly valves are available for 2 1/2-inch pipe and larger. Because of their smaller size, simpler structure and lighter weight, the butterfly valve has been increasingly applied to hot and cold air, hydropower, environmental protection, building water supply and drainage, municipal engineering and other pipeline systems. According to the sealing structure, it can be divided into soft sealing butterfly valve and common double eccentric hard sealing butterfly valve and three eccentric hard sealing butterfly valve. Home > Products > Butterfly Valves; Butterfly (Off Set) Browse All. Ancillary Pneumatic Valves encompasses quick exhaust valves, inline speed controllers, air check valves, vacuum generators and shuttle valves. For instance, you will find the butterfly valve inside the carburetor of a car. Resilient Seated Butterfly Valve Double Flanged DN50-DN2000 Model CFBV2103. You will need a 5/3 switch or solenoid to control this valve. Uses and Functionality. They are also widely used for domestic piping purposes. Double eccentric butterfly valve is suitable for adjusting and throttling devices in the pipelines of urban heating, gas supply, water supply, etc. The Butterfly Valve – Designed in the form of a disc or double or triple offset shafts that operate perpendicular to the flow direction, these valves ideally can control flow, but do leave some residual material in the pipes. Read more. 0. … Valve Type. It meets the requirements of all HVAC applications requiring zero leakage for 2-way and 3-way applications. Butterfly valves can also be used for regulating the flow by adjusting the lever and by keeping a close watch on the desired output flow. It is lighter in weight than other types of valves and requires relatively low pressure drops. This means that, smaller amounts of fluid or air will pass through. The application of triple  eccentric butterfly              valve is more extensive. 2/2 way Butterfly Valves used for control and on/off operations. It can help you to learn more about the components of valves. Operation is similar to that of a ball valve, which allows for quick shut off. The table below can be used to indicate butterfly valves and their flow coefficients at different open (or closed) positions. Personnel making any adjustments to the valves should utilize suitable equipment. They are extremely durable and need minimal maintenance. Chances are there that you already know this. They function to open/close systems as well as controlling flow. Switch steps of manual butterfly valve, Next: It offers more benefits compared to the zero offset and double offset butterfly valves. They also come in different styles. Products. Butterfly valves are one of those valves that can be used for both throttling and shutting on or off. The other type of high performance valves is the triple offset butterfly valve. Tel:+86 150 0225 9955 The butterfly valve opening and closing part is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjusting. Wechat: Bundor_marketing Pre: A quarter turn valve can open or close whenever the handle is turned 90 degrees (a quarter of a turn). Piping and flange compatibility. However, if the valve is opened completely, the disc will be rotated 90 degrees then larger amounts of air or fluid will pass through. There are those which offer high performance in systems like large pump lines and front suctions. Butterfly valves possess many advantages over gate, globe, plug, and ball valves, especially for large valve applications. Butterfly valves can also be used in automobile systems. Manufacturers data should always be checked before actual use. 1. Basics of Butterfly Valves When the body and stem journal area are isolated from the line media, the valve is considered a "non-wetted" design. Triple Offset Butterfly Valve. A butterfly valve is a valve that isolates or regulates the flow of a fluid. Actuators. Butterfly valves are configured differently. What are the advantages of the ball valve? The double eccentric butterfly valve has poor sealing performance and is applied in a pipeline that allows a certain amount of leakage. Flow Coefficient - C v; Valve Size Openness (disc angle) Maximum flow velocity (ft/sec) inches mm … Butterfly Valves Even though we work on a metric system, measures of flow are commonly given as a CV value which is an; Imperial measure flow in US gallons per minute of water at 60° fahrenheit with pressure drop of 1 psi across the valve. Save my name, email, and website in this browser for the next time I comment. Sort By Most Popular Sort By Name Sort By SKU Sort By Lowest Price Sort By Highest Price A quarter turn valve can open or close whenever the handle is turned 90 degrees (a quarter of a turn). A threaded butterfly valve is made of the same internal components as wafer or grooved butterfly valves, but both connections are threaded (i.e. The closing mechanism takes the form of a disk. The packing provides an additional seal especially in case the resilient seat is damaged. The passageway is unrestricted allowing fluids or air to pass. Pictures on our website may differ from actual product. If you do not see a particular product on this page that you need, call our sales team at 1-866-VALTORC or locally at 770-423-7100 for an immediate quote and assistance and custom application quotation. RESILIENT SEATED BUTTERFLY VALVES FUNCTIONAL SAFETY MANUAL 1.0 INTRODUCTION This Safety Manual provides information necessary to design, install, verify and maintain a Safety Instrumented Function (SIF) utilizing the Bray resilient seated butterfly valves S20/21, S22/23, S30/31, S32/33, and S35/36. Q 3 INSTALLATION FIGURE 1 WARNING! The main function of these valves is to control the flow of liquids through a section of pipe. The BI-TORQ BY and MY series butterfly valves have been designed to be suitable for all types of ANSI 125/150 flanges, whether flat-faced, raised face, slip-on or weld-neck. Savings in weight, space, and cost are the most obvious advant… Gate valve Gate valve is the most common type of valve in any process plant. 2.2 Butterfly Valve Seat / Disc Function 2.2.1 Before reviewing the proper installation, maintenance, and repair procedures for resilient seated butterfly valves, let’s discuss the seat-disc function of a butterfly valve. Introduction of commonly used butterfly valve materials, Office hours(GMT+8): 8:30-18:00 Choose a country that suits you:Bundor-ru ×, Choose a country that suits you:Bundor-es ×. Pump lines and front suctions the economics, as well as controlling flow YY D max./min DN 700 but. 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The table below can be used for isolating or regulating flows disc or butterfly moves a quarter valve! Made of a number of components close to regulate or isolate the flow of fluid > Products butterfly!
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