Butterfly valve butterfly valves are amongst the most popular types of valves. The manufacturers and distributors featured in the following listing offer a broad range of butterfly valves, including stainless steel butterfly valves and pvc butterfly valves. The zero offset butterfly valve, which uses the flexibility of rubber, has the lowest pressure. Size type end drilling body disc shaft seat operator.
Resources to help you determine the right solution for your. The manufacturer shall have produced awwa butterfly valves for a minimum of five years. Trusted throughout chemical, petrochemical and many other industries leaders in sealing integrity 2 table of contents garlock butterfly valves overview 3 the correct type of lining 4 head flange, body, flange types design and shaft sealing 5. If you have ever wondered how and why butterfly valves are used in different applications, let bm engineering supplies talk you through their various characteristics, capabilities and applicable applications. Concentric rubber lined butterfly valve 2 piece split body ptfe lined butterfly valve double eccentric high performance butterfly valve triple eccentric high performance butterfly valve dual plate check valve engineering data 04 12 14 17 20 22 valve configurations scale drawing to actual size application this catalog remains the property of ms. These valves allow partial opening based on required output for fluid flow. The cost of valve in the piping system is up to 20 to 30% of the overall piping cost. Cast in both wafer and tapped lug patterns in a variety of material choices, demco butterfly valves feature a onepiece body for reduced weight and increased strength.
Rubber seated butterfly valve, sizes 3 through 20 inches. The ratio fl of the valve flow coefficient cv based on the pressure drop at the vena contracta, to the usual valve flow coefficient cv which is based on the overall pressure. In order to download a dwg file or pdf file to your hard drive, right click on the link and save target as. In order to meet your just in time delivery requirements, pratt maintains inventory on 3 through 48 butterfly valves with a variety of mdt actuation styles to suit your application. Types of manual valves tlv a steam specialist company. And the cost of a given type and size of the valve can vary 100%. Butterfly valves are suitable for lowpressure and lowtemperature applications as well as highpressure and hightemperature applications. This type of installation is always advisable with valve diameters over dn 400. Danfoss nvd is a wide range of nonreturn valves available in different designs to meet different demands in relation to head loss, speed of operation, connection type and price. The term highperformance butterfly valve is intended to signify their suitability for moderate to high pressure and temperature services. The two piece design of shaft and disc allows for an easy change of the disc and liner.
Provides information on applications of many types of valves. Manual worm gear operators are self locking in all positions adjustment. Valves are characterized as gadgets to control or manage the beginning, end, course and furthermore the weight or rate of the stream of liquid under strain which is conveyed by a blower or vacuum pump or is put away in a vessel. Butterfly valves can provide many maintenance free cycles and still provide. Valves are able to be open or close rapidly according to the disc revolve during 0 degree to 90 degree.
Some types of butterfly valves, like pvc butterfly valves, have a handle that stops and locks at any position as it fully opens or closes to control the flow of the fluid with precision. Sps 262 high performance butterfly valves water corporation. Symbols for position and process controllers for process valves 10 globe valves, straight through diaphragm valves, full bore 22 way 19 ball valves, multiport 32 way with t passage 21 ball valves, multiport 32 way with l passage 22 butterfly valves 22 way 23 swing check valve 22 way 24 gate valves 22 way 25 pinch valves 2. Garlock butterfly valve catalog eu file classification. Mss sp68 high pressure offset seat butterfly valves. To make your selection easier, nibco offers specification and submittal assistance. Some valves are better than others at maintaining downstream pressures with varying. In 1991, subcommittee e facetoface and endtoend dimensions of valves, was combined. Visit our official website to view our competitive advantage products, work with us to generate more valve business. Dezurik bhp high performance butterfly valves technical. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and. Butterfly valve types wafer, lug, double offset and triple offset types a butterfly valve is a quarterturn rotary motion valve, that is used to stop, regulate, and start the flow.
Wafer, semi lug, lug and flanged type global valve center. Butterfly valves can be designed as per api609gbdinghost standard with wafer, lug and flange ends. Each type of valve has been designed to meet specific needs. The garseal valves are available in wafer and lug type. The specific technical documents listed in appendix vii, part b, have been. Inch dimensions were converted from common to twoplace decimal fractions.
Different types of valves used in piping mech4study. The ratio fl of the valve flow coefficient cv based on the pressure drop at the vena contracta, to the usual valve flow coefficient cv which is based on the overall pressure drop across the valve in nonvaporizing liquid service. Even though they are in certain ways similar to ball valves, butterfly valves are typically easier to install because of their reduced weight. Butterfly valves are suitable for handling of large flow of fluids at relative low pressures. They control the flow of a fluid by means of a rotating disc. Subscribe our website for more informative articles.
Wafer type butterfly valves flange bolt dimensions. Concentric butterfly valves, wafer, lugged and flanged technimex. Functional description for butterfly valves manual operation. Valves are actually fittings, however, are normally talked about as a different classification. Butterfly valve types wafer, lug, double offset and. These valves can be either manually operated with the help of a hand wheel or can be actuated i. Keep all parts of the butterfly valve in a wellventilated place protected from fire, rain and wind. Use this comprehensive directory to find high performance butterfly valves, sanitary butterfly valves, center line, air and actuated products. Download valve catalogue, pdf drawing, ga drawing, cross sectional arrangement design drawing, 3d model drawing, valve strainer filter sight glass flow indicator operation and maintenance manual download from here free. Danfoss nvd nonreturn valves allow the medium to flow in one direction. Valve types and features the three basic functions of valves are. Butterfly valves types, construction, applications and. In order to meet your just in time delivery requirements, pratt maintains inventory on 3 through 48 butterfly valves with a variety of mdt actuation styles to. Valves can be categorized also based on their function.
Inlet pressure flow rates 2way pilots are best suited for. Api valve standards defined and explained valve news. Butterfly valve type 57l lug style pdcpd 2 2 general operating instructions using a positivepressure gas with our plastic piping may pose a dangerous condition due to the repellent force particular to compressible fluids even when the gas is under similar pressures used for liquids. When flange butterfly valve is in the fully open position, the disc thickness is only object which affect resistance.
Standard marking system for valves, fittings, flanges, and unions. Butterfly valves shall be manufactured in accordance with the latest revision of awwa c504, class 150b and conform to nsf standard 61. Concentric semilug type rubber lined butterfly valve. Process valves symbols icons for planners, designers and. Types of valves covered include gate valves, globe valves, ball valves, plug valves, diaphragm valves, reducing valves, pinch valves, butterfly valves, needle valves, check valves, and safetyrelief valves. Butterfly valves provide bidirectional deadend service in commercial and industrial service. You are facing increasingly strict environmental emissions regulations. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below. The standard covers corrosionresistant bolted bonnet gate valves with flanged or buttweld ends in sizes nps 12 through 24, corresponding to nominal pipe sizes in asme b36. They are also more precise and can close faster and easier. Not only does this help in smooth functioning, but also ensures costeffectiveness.
The trademarks, logos and service marks displayed in this document herein are the property. Jun 25, 20 the standard covers corrosionresistant bolted bonnet gate valves with flanged or buttweld ends in sizes nps 12 through 24, corresponding to nominal pipe sizes in asme b36. How butterfly valves are used in different applications. Butterfly valves butterfly valves manufacturer sio. Pressure relief applications pressure reducing applications where there will always be over 15 psi of pressure loss required across the valve 3way pilots are best suited for. Different types of valves with pdf file engineering. Pdf straight pattern globe valves are widely used in the oil and gas industry to regulate and control the flow of fluids. Butterfly valves, since their invention in 1960s became on of the most demanded flow control elements in. Pratt butterfly valve, coupled with the mdt actuator, offers single source responsibility for both actuator and valve. These coefficients compare with the orifice metering. You also get the assurance of the nibco warranty, along with superior customer service expertise. Butterfly valves make an excellent choice by combining the balance of an.
Features conform to the specification of jis and japanese government offices it conforms to the specification of jis b2032 wafer type rubberseated butterfly valves and japanese government offices as a valve used for supply water services or air. As one of the most durable resilientseated butterfly valves in the industry, camerons demco butterfly valve excels in a variety of applications. Valves castel pdf catalogs technical documentation. There are several different types that are typically used in pipelines, some of the most popular include balls, butterfly, check and gate valves. Swagelok s extensive line of general industrial and process interface valves has passed the american petroleum institutes most stringent fugitive. Details most popular types of valves and how to use them. Sure seal butterfly valves high performance butterfly. Garlock does not offer rubber or metal valves, so our main focus will be on plasticlined valves. Different types of valves used in piping a complete guide.
They are designed for installation on commercial refrigerating systems and on civil. Pdf selecting a butterfly valve instead of a globe valve. Butterfly valves engineered by bray including resilient seated butterfly valves, double offset high performance butterfly valves, triple offset premier isolation butterfly valves and high performance valves for the sugar industry. Dezurik bhp high performance butterfly valves, asme. Jan 29, 2019 butterfly valve is an quarter turn rotary motion valve used to regulate, start or stop of fluid flow. The albion range is designed strictly in accordance with api609, en593, mss sp67, awwa c504, and specially designed for the following process functions. Butterfly valves have tripple eccentric, double eccentric, middle line and rubber lining types, which can be used for low pressure oil, gas and water pipelines, with light weight small volume. Different types of valves with pdf file engineering discoveries. An epdm seated butterfly valve shall not be used for all oil applications. The possible problems and solutions of flange butterfly valve. All valves comply with requirements of this standard. The following are the three types of butterfly valves. Valves common types butterfly valves butterfly valves use a similar principle to ball valves. Dezurik pec eccentric plug valves 472 1001800mm dezurik pef eccentric plug valves 336 75900mm dezurik ptw threeway plug valves 316 80400mm dezurik pfw fourway plug valves 316 80400mm butterfly valves.
Butterfly valves 22 way 23 swing check valve 22 way 24 gate. Some valves are capable of throttling flow, other valve types can only stop flow, others work well in corrosive systems, and others handle high pressure. Do not throw, drop, trip or drag butterfly valves when transporting them. These are different types of valves used in piping. Plumbing valves are controlled liquid passes from one pipe to another, can be found throughout a home. If you have any query regarding this article, ask by commenting. Wafer type gate and check valves, class 150 ypattern globe and check valves, and several patterns of butterfly valves were added to the types covered. Armtex carries the full line of sure seal butterfly valves including resilient seated and firesafe butterfly valves. An actuator is installed with a large diameter butterfly valve.
Butterfly valves are built on the principle of pipe damper. There are different kinds of butterfly valves, each adapted for different pressures and different usage. Butterfly valves introduction quarter turn rotational motion wermac. Valve design testing manufacturing international standard download free. The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves, butterfly valves, globe valves, gate valves, and diaphragm valves according to jis, a valve is defined as. Examples of the common types are the globe valve, gate valve, ball valve, plug valve, butterfly valve, diaphragm valve, check valve, pinch valve, and safety valve.
Flange butterfly valves with simple structure, small size and light weight is assembled by several components. Process valves symbols icons for planners, designers and piping engineers. The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves, butterfly valves, globe valves, gate valves, and diaphragm valves. It means that if you choose ball valve over butterfly valve for the same function.
Welcome to the premier industrial resource for butterfly valves. Introduces the functions of the basic parts common to most types of valves. Click here to download this entire section, or select specific data sheets in the list above. Swagelok s extensive line of general industrial and process interface valves has passed the american petroleum institutes most stringent fugitive emissions testing without any design modifications. The sure seal butterfly valve is the superior resilientseated high performance butterfly valve for industrial applications on the market today. Butterflystyle demco valves come in a variety of styles to suit a range. If you like this article, dont forget to share it on social networks. Some butterfly valves are equipped with flanges, which means they cannot be attached to piping right away. Symbols for process valves valve typesbodies 6 symbols for valve actuators actuator types 7 globe valves, straight through straight seat 22 way 11 globe valves, multiport double seat 32 way. Water corporation strategic product appraisal process manual internally controlled. In piping following types of valves are used depending on the requirements. However, instead of a ball mounted in the valve body a circular disc called a butterfly because the two half circles around the vertical shaft appear like wings.
Again the orientation of the butterfly determines the flowrate. Details most popular types of valves and how to use them as. For proper installation of the plumbing system in a building, various types of joints are used, which are shown in fig. Mss sp44 steel pipeline flanges, class 150, annex c, table c3. When valves are installed end of piping, a counterflange as per dwg type b is. Because of the diversity of the types of systems, fluids, and environments in which valves must operate, a vast array of valve types have been developed.
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