It is considered as one of the most resilient seated valve design for dead-end service.
The butterfly valve opens when the pressure of the fluid is higher than the set value. % The stainless steel butterfly features a investment stainless steel body and disc. /Type/ExtGState Handling temperature ranges from -100F to +450F. /Width 409 Recommended body material: carbon steel, stainless steel, Hastelloy.
<<979C6EE41670D9499A2252C745E97A4B>]>> Double Flanged Butterfly Valve has a flanged body and raised rims to allow its installation between two flanged pipes with the same dimension as the valve. Your email address will not be published. 48 0 obj <>/Filter/FlateDecode/ID[<054DC4AD8A3E9C6911740011DB9B0320>]/Index[35 26]/Info 34 0 R/Length 70/Prev 27120/Root 36 0 R/Size 61/Type/XRef/W[1 2 1]>>stream A high performance butterfly valve is a quarter-turn valve which consists of metal disk rotating about the circumference of a circular pipe. The following are some of the materials available for butterfly valves. Typically, those that have soft seats are concentric or lined type, while metal seated valves have eccentric designs. Pneumatic Valves can be used for throttling or as throttle butterfly valves. stream This material is covered by ASTM A216 standard (WCA, WCB, WCC), ASTM A352 LCB/LCC and ASTM A351 CF8/CF8M. As such, you can easily operate the valve remotely. Sizes range from 1.5" to 12.0" in both Wafer and Lug. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. %PDF-1.4 % Most Common types of Stainless Steel Butterfly Valve, Dimensions Schedule of PN16 Butterfly Valve, Stainless Steel Butterfly valve Constrution, Petro- Chemical, Oil & Gas, Purity & Some Marine & Industrial. Butterfly valves are also available in many types of materials and combinations of materials for the body, disc and seat. << /Filter/DCTDecode For carbon steel butterfly valves, the most popular grade for body material and disc is the WCB and LCC Steels. /ColorSpace/DeviceGray Due to continuous development of our product range, we reserve the right to change the dimensions, pictures and information contained on our website and product catalogs. In the first offset, the vertical shaft axis positions itself further backwards from the point of sealing (disc to valve seat). %%EOF Butt welded butterfly valves are directly welded in the pipeline for high pressure applications. Solenoid Valves The combination of all these features (make this series of valves an excellent choice for applications in Aggressive Atmospheres and in Harsh Wash down Situations often incurred in Food Plants. << 35 0 obj <> endobj AWWA Butterfly Valves These are valves as specified by the American Water Works Association. They can also be fire-proof seated butterfly valves. SW, The butterfly valve symbol in P&ID diagrams is shown in this image, A concentric butterfly valve (left), a double offset butterfly valve (center), triple offset butterfly valve (right). This website uses cookies to improve your experience while you navigate through the website. Since it is nonreactive, resilient or soft seated PRFE butterfly valves can be used for food manufacturing applications. For this application, a lug style butterfly valve should be used. For duplex stainless steels, there is a balanced structure between the FCC and BCC arrangement of material component. This category only includes cookies that ensures basic functionalities and security features of the website. Before we get into the types of butterfly valves, lets have a recap on what it is.
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The Stainless Steel 316 butterfly valve is made up of the 316 grade material with molybdenum, chromium and nickel in the composition. 0
Also, it should be considered if the system needs automatic actuation or can simply be mechanically actuated. /Height 465 These types of valves use an electric actuator for operating the valve in an open and close position. What are the International Standards for Choosing Butterfly Valve Types? Reinforced Polytetrafluoroethylene (RTFE) or reinforced PFTE or reinforced Teflon is a valve seat material which is blended with filler compounds to provide additional compressive strength and prevent abrasive wear.
Generally, there are two types: soft seated and metal seated. There are different grades of materials that are used to produce these valves. This helps provide a tighter seal. Plate Flange Dimensions EN 1092 (PN 6/10/16/25/40), http://amcovalves.com/products/butterfly-valves-pn-10/, design: centric, double eccentric, triple eccentric, end connection type: wafer, lug (semi or full), flanged and double flanged, seat material: soft (example: Teflon, Buna, rubber, etc) or metal-to-metal (SS304, SS316), body and disc materials (from cast iron to high nickel alloys), actuation: manual (lever, gear, a worm gear) and actuated (electric, pneumatic, hydraulic and gas-over-oil types), concentric butterfly valve: the stem is centered in the middle of the disc and the is disc centered in the bore. The end-connection of the valve body is the most common classification for butterfly valve types. 556 13 Or just call us now. Duplex stainless steels butterfly valves can be available as wafer style or lug style, with a soft seat or metal to metal seat. The lug butterfly valve has threaded lugs or inserts around its circumference that permit for bolt passages. So during plastic deformation at freezing temperatures, the FCC structure presents the material with a suitable amount of ductility and toughness for cryogenic applications.
The lugs provides an easy way for alignment of the two flanges sandwiching the lug valve during installation. Carbon steel is a combination of carbon alloy and iron. This product is also furnished with an Anti-Static Pin and Spring, eliminating the possibility of static discharge due to the isolation of the stem I disc from the body by the seat and stem bushings. There are three offsets for triple offset butterfly vavles all mounted eccentrically. Cannot be used in conjunction with corrosion resistant piping applications. There is also a limit switch that controls the automatic operation of the valve: Pneumatic actuators are used to operate these types of valves for shut-off pipelines. 0000002218 00000 n xb```b``Qg`f`daf@ n0x0CeC,; ; Y@jUga0v@B&$0 ViN 2p1qD5I; These types of valves are manually operated through a hand-wheel or crank.
4 0 obj Cannot be used for hydrocarbon application service. They are used in specific applications that require extreme resistance to fluid impact and high and low temperatures. In terms of cost, carbon steel is relatively cheaper than other types of butterfly valve material, but it cannot be used for corrosive applications. 5 0 obj It is lightweight and corrosion-resistant. This may be dependent on the amount of torque needed to open and close the valve or the speed at which it must operate. You may also choose from a variety of materials, seat design and end-connection. Inconel 625 is generally stronger than stainless steel and keeps its tensile strength even at higher operating temperatures. xref
Austenitic SS316L butterfly valves contains high amounts of chromium and nickel with low carbon content. The maximum pressure in your system should be lower than the rated maximum temperature and pressure of the valve. 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. >> An individual hole allows installation of two sets of bolts without a nut. Stem sealing is accomplished by utilizing the seat as the primary seal. These valves are designed for a unidirectional flow of fluids inside the pipelines. There are also numerous ways to operate butterfly valves, starting from the very basic method of using a handwheel. Specifically, the austenitic to ferritic part is about 50-50, composing of increased levels of molybdenum and chrome. Basically, the most popular there is are the wafer and a semi-lug and lug type valves, but theres also the flanged butterfly valve and butt welded type. Hydraulic actuators can be operated semi-automatically or automatically. %%EOF
For this reason, Inconel butterfly valves are used for applications requiring heavy duty seats such as in handling bulkier fluids. A certain pressure range is set in the system. The movement is calculated with a specific cone profile to address shut off of high pressure applications. 0000003297 00000 n
Home Valves Butterfly Valves Stainless Steel Butterfly Valve [Series 1400], Product Description, Dimensions and Specifications PDF. As such, duplex stainless steel valves are used for larger pipelines where higher strength and rigidity is needed in combination to the toughness offered by austenite. When you choose a butterfly valve, check the rating. Hence, they are not automatic. The images show the design difference between a double and a triple eccentric butterfly valve (respectively at the left and right side of the diagram). As the stainless steel material is a combination of iron, nickel, chrome (10.5%) and sometimes Molybdenum, it possesses both strong acid endurance and strength of steel. Elastomer should be vulcanized to the body. Sanitary Valves %PDF-1.3 The most recent classification is precipitation hardenable and duplex. Gate & Globe Valves It then closes when the downstream pipe needs to be bled. Butterfly Valve Types by End-Connection Styles, #3 Flanged/Double Flanged Butterfly Valves, #2 Metal Seated (Stainless steel 316L/Inconel seats), Zero Offset/Concentric Disk (A609 Type A), Butterfly Valves According to Mode of Operation, Hydraulic piston and cylinder or hydraulic actuator butterfly valves, Butterfly Valves According to Application Specifications. The main purpose of Wafer Butterfly Valves is to maintain a unidirectional pressure or positive pressure. Hence, depending on your application, it need not be opened more than 60 or 70 angular degrees from its closed position. hUn;?CPP)HQ$>t&{$9 Y7o{u`<3I)BX1ig2L@0&($k>"#t>1n#<6pPw_Y7Qhaa. 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. Depending on the need of the applications and the mechanical properties, the steel grade differs. 0000000016 00000 n
Generally speaking, butterfly valves are advantageous in terms of weight, cost and space. Cannot be used for undemanding water transports. [/Separation/PANTONE#20Red#20032#20U/DeviceRGB 2 0 R] In this guide, we will run through some basic features and know-hows of the butterfly valves before we dive right in to its different types. Copyright 1999 - 2022, All Rights Reserved - Valtorc International. endstream
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the eccentric butterfly valve (double offset and triple offset): have one or more stub shafts (stems) which are located in anoffset position from the center of the valve. >> The wetted parts in a valve should also be known. This type of valve has the highest strength-to-weight ratio as compared with other metal valves. endstream
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<. >> Check & Needle Valves 0000000822 00000 n
Plus, they are more suitable for handling large industrial valve applications as compared with globe, gate, plug and ball valves. Feel free to contact us for quotation. Since this type of valve does not have holes for bolting, flanged pipes with bolts secures the valve body to its place. A lugged valve has the ability to maintain a reliable body connection even without a downstream flange. 0000003375 00000 n
These cookies will be stored in your browser only with your consent. While WCB high performance butterfly valve is used for high temperature applications, LCC valves or cast steel is used for low temperature services. Necessary cookies are absolutely essential for the website to function properly. Also, the wetted parts should be compatible and in contact with the fluid being measured. /Type/ExtGState D { 1 exch dup 0.723 mul 1 exch sub exch 0.681 mul 1 exch sub } endstream
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Some pertinent valve specifications to ask the manufacturer are as follows: In addition to that, as a designer or engineer here are some things you should look into before choosing a butterfly valve type: Butterfly valves are suitable for large volumes of liquids and gases, but not for fibrous suspensions and dry bulk solids as they can erode the valve body. In this guide, we have classified butterfly valves into many types as summarized below. } !1AQa"q2#BR$3br Valve Mounting Kit, Please fill out our credit application for purchase orders and net terms. Used for applications not exceeding Class 150 rating (120C), which depends on the seal material. It doesnt use a limit switch like the electric-operated butterfly valves, but instead, uses the following for operation: These types of valves are used for applications requiring huge impacts or force for opening and closing the valve. Sizes may range from 2 to 60 in and can generally accommodate saturated steam at 200PSI and 450PSI. /Domain[0 1] Pneumatic Butterfly valves are typically used for transferring compressed and pressurized air. The force of the fluid over a pipe changes the pressure in the system, creating an impact on the spring force of the hydraulic actuator. Hence, different types of stainless steel butterfly valves material respond to different applications but distinct features such as corrosion resistance and machinability are universal for all stainless steel types. Concentric Disk butterfly valve are suitably designed with the following points: The Double Offset or Double Eccentric Valve is a high performance butterfly valve which is designed with two offsets of the stem. There are many types of stainless steel from 300 to 400 series, but 316L is preferred for butterfly valve.
The butterfly valve opens when the pressure of the fluid is higher than the set value. % The stainless steel butterfly features a investment stainless steel body and disc. /Type/ExtGState Handling temperature ranges from -100F to +450F. /Width 409 Recommended body material: carbon steel, stainless steel, Hastelloy.
<<979C6EE41670D9499A2252C745E97A4B>]>> Double Flanged Butterfly Valve has a flanged body and raised rims to allow its installation between two flanged pipes with the same dimension as the valve. Your email address will not be published. 48 0 obj <>/Filter/FlateDecode/ID[<054DC4AD8A3E9C6911740011DB9B0320>]/Index[35 26]/Info 34 0 R/Length 70/Prev 27120/Root 36 0 R/Size 61/Type/XRef/W[1 2 1]>>stream A high performance butterfly valve is a quarter-turn valve which consists of metal disk rotating about the circumference of a circular pipe. The following are some of the materials available for butterfly valves. Typically, those that have soft seats are concentric or lined type, while metal seated valves have eccentric designs. Pneumatic Valves can be used for throttling or as throttle butterfly valves. stream This material is covered by ASTM A216 standard (WCA, WCB, WCC), ASTM A352 LCB/LCC and ASTM A351 CF8/CF8M. As such, you can easily operate the valve remotely. Sizes range from 1.5" to 12.0" in both Wafer and Lug. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. %PDF-1.4 % Most Common types of Stainless Steel Butterfly Valve, Dimensions Schedule of PN16 Butterfly Valve, Stainless Steel Butterfly valve Constrution, Petro- Chemical, Oil & Gas, Purity & Some Marine & Industrial. Butterfly valves are also available in many types of materials and combinations of materials for the body, disc and seat. << /Filter/DCTDecode For carbon steel butterfly valves, the most popular grade for body material and disc is the WCB and LCC Steels. /ColorSpace/DeviceGray Due to continuous development of our product range, we reserve the right to change the dimensions, pictures and information contained on our website and product catalogs. In the first offset, the vertical shaft axis positions itself further backwards from the point of sealing (disc to valve seat). %%EOF Butt welded butterfly valves are directly welded in the pipeline for high pressure applications. Solenoid Valves The combination of all these features (make this series of valves an excellent choice for applications in Aggressive Atmospheres and in Harsh Wash down Situations often incurred in Food Plants. << 35 0 obj <> endobj AWWA Butterfly Valves These are valves as specified by the American Water Works Association. They can also be fire-proof seated butterfly valves. SW, The butterfly valve symbol in P&ID diagrams is shown in this image, A concentric butterfly valve (left), a double offset butterfly valve (center), triple offset butterfly valve (right). This website uses cookies to improve your experience while you navigate through the website. Since it is nonreactive, resilient or soft seated PRFE butterfly valves can be used for food manufacturing applications. For this application, a lug style butterfly valve should be used. For duplex stainless steels, there is a balanced structure between the FCC and BCC arrangement of material component. This category only includes cookies that ensures basic functionalities and security features of the website. Before we get into the types of butterfly valves, lets have a recap on what it is.
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The Stainless Steel 316 butterfly valve is made up of the 316 grade material with molybdenum, chromium and nickel in the composition. 0
Also, it should be considered if the system needs automatic actuation or can simply be mechanically actuated. /Height 465 These types of valves use an electric actuator for operating the valve in an open and close position. What are the International Standards for Choosing Butterfly Valve Types? Reinforced Polytetrafluoroethylene (RTFE) or reinforced PFTE or reinforced Teflon is a valve seat material which is blended with filler compounds to provide additional compressive strength and prevent abrasive wear. Generally, there are two types: soft seated and metal seated. There are different grades of materials that are used to produce these valves. This helps provide a tighter seal. Plate Flange Dimensions EN 1092 (PN 6/10/16/25/40), http://amcovalves.com/products/butterfly-valves-pn-10/, design: centric, double eccentric, triple eccentric, end connection type: wafer, lug (semi or full), flanged and double flanged, seat material: soft (example: Teflon, Buna, rubber, etc) or metal-to-metal (SS304, SS316), body and disc materials (from cast iron to high nickel alloys), actuation: manual (lever, gear, a worm gear) and actuated (electric, pneumatic, hydraulic and gas-over-oil types), concentric butterfly valve: the stem is centered in the middle of the disc and the is disc centered in the bore. The end-connection of the valve body is the most common classification for butterfly valve types. 556 13 Or just call us now. Duplex stainless steels butterfly valves can be available as wafer style or lug style, with a soft seat or metal to metal seat. The lug butterfly valve has threaded lugs or inserts around its circumference that permit for bolt passages. So during plastic deformation at freezing temperatures, the FCC structure presents the material with a suitable amount of ductility and toughness for cryogenic applications.
The lugs provides an easy way for alignment of the two flanges sandwiching the lug valve during installation. Carbon steel is a combination of carbon alloy and iron. This product is also furnished with an Anti-Static Pin and Spring, eliminating the possibility of static discharge due to the isolation of the stem I disc from the body by the seat and stem bushings. There are three offsets for triple offset butterfly vavles all mounted eccentrically. Cannot be used in conjunction with corrosion resistant piping applications. There is also a limit switch that controls the automatic operation of the valve: Pneumatic actuators are used to operate these types of valves for shut-off pipelines. 0000002218 00000 n xb```b``Qg`f`daf@ n0x0CeC,; ; Y@jUga0v@B&$0 ViN 2p1qD5I; These types of valves are manually operated through a hand-wheel or crank.
4 0 obj Cannot be used for hydrocarbon application service. They are used in specific applications that require extreme resistance to fluid impact and high and low temperatures. In terms of cost, carbon steel is relatively cheaper than other types of butterfly valve material, but it cannot be used for corrosive applications. 5 0 obj It is lightweight and corrosion-resistant. This may be dependent on the amount of torque needed to open and close the valve or the speed at which it must operate. You may also choose from a variety of materials, seat design and end-connection. Inconel 625 is generally stronger than stainless steel and keeps its tensile strength even at higher operating temperatures. xref
Austenitic SS316L butterfly valves contains high amounts of chromium and nickel with low carbon content. The maximum pressure in your system should be lower than the rated maximum temperature and pressure of the valve. 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. >> An individual hole allows installation of two sets of bolts without a nut. Stem sealing is accomplished by utilizing the seat as the primary seal. These valves are designed for a unidirectional flow of fluids inside the pipelines. There are also numerous ways to operate butterfly valves, starting from the very basic method of using a handwheel. Specifically, the austenitic to ferritic part is about 50-50, composing of increased levels of molybdenum and chrome. Basically, the most popular there is are the wafer and a semi-lug and lug type valves, but theres also the flanged butterfly valve and butt welded type. Hydraulic actuators can be operated semi-automatically or automatically. %%EOF
For this reason, Inconel butterfly valves are used for applications requiring heavy duty seats such as in handling bulkier fluids. A certain pressure range is set in the system. The movement is calculated with a specific cone profile to address shut off of high pressure applications. 0000003297 00000 n
Home Valves Butterfly Valves Stainless Steel Butterfly Valve [Series 1400], Product Description, Dimensions and Specifications PDF. As such, duplex stainless steel valves are used for larger pipelines where higher strength and rigidity is needed in combination to the toughness offered by austenite. When you choose a butterfly valve, check the rating. Hence, they are not automatic. The images show the design difference between a double and a triple eccentric butterfly valve (respectively at the left and right side of the diagram). As the stainless steel material is a combination of iron, nickel, chrome (10.5%) and sometimes Molybdenum, it possesses both strong acid endurance and strength of steel. Elastomer should be vulcanized to the body. Sanitary Valves %PDF-1.3 The most recent classification is precipitation hardenable and duplex. Gate & Globe Valves It then closes when the downstream pipe needs to be bled. Butterfly Valve Types by End-Connection Styles, #3 Flanged/Double Flanged Butterfly Valves, #2 Metal Seated (Stainless steel 316L/Inconel seats), Zero Offset/Concentric Disk (A609 Type A), Butterfly Valves According to Mode of Operation, Hydraulic piston and cylinder or hydraulic actuator butterfly valves, Butterfly Valves According to Application Specifications. The main purpose of Wafer Butterfly Valves is to maintain a unidirectional pressure or positive pressure. Hence, depending on your application, it need not be opened more than 60 or 70 angular degrees from its closed position. hUn;?CPP)HQ$>t&{$9 Y7o{u`<3I)BX1ig2L@0&($k>"#t>1n#<6pPw_Y7Qhaa. 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. Depending on the need of the applications and the mechanical properties, the steel grade differs. 0000000016 00000 n
Generally speaking, butterfly valves are advantageous in terms of weight, cost and space. Cannot be used for undemanding water transports. [/Separation/PANTONE#20Red#20032#20U/DeviceRGB 2 0 R] In this guide, we will run through some basic features and know-hows of the butterfly valves before we dive right in to its different types. Copyright 1999 - 2022, All Rights Reserved - Valtorc International. endstream
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startxref
the eccentric butterfly valve (double offset and triple offset): have one or more stub shafts (stems) which are located in anoffset position from the center of the valve. >> The wetted parts in a valve should also be known. This type of valve has the highest strength-to-weight ratio as compared with other metal valves. endstream
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<. >> Check & Needle Valves 0000000822 00000 n
Plus, they are more suitable for handling large industrial valve applications as compared with globe, gate, plug and ball valves. Feel free to contact us for quotation. Since this type of valve does not have holes for bolting, flanged pipes with bolts secures the valve body to its place. A lugged valve has the ability to maintain a reliable body connection even without a downstream flange. 0000003375 00000 n
These cookies will be stored in your browser only with your consent. While WCB high performance butterfly valve is used for high temperature applications, LCC valves or cast steel is used for low temperature services. Necessary cookies are absolutely essential for the website to function properly. Also, the wetted parts should be compatible and in contact with the fluid being measured. /Type/ExtGState D { 1 exch dup 0.723 mul 1 exch sub exch 0.681 mul 1 exch sub } endstream
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Some pertinent valve specifications to ask the manufacturer are as follows: In addition to that, as a designer or engineer here are some things you should look into before choosing a butterfly valve type: Butterfly valves are suitable for large volumes of liquids and gases, but not for fibrous suspensions and dry bulk solids as they can erode the valve body. In this guide, we have classified butterfly valves into many types as summarized below. } !1AQa"q2#BR$3br Valve Mounting Kit, Please fill out our credit application for purchase orders and net terms. Used for applications not exceeding Class 150 rating (120C), which depends on the seal material. It doesnt use a limit switch like the electric-operated butterfly valves, but instead, uses the following for operation: These types of valves are used for applications requiring huge impacts or force for opening and closing the valve. Sizes may range from 2 to 60 in and can generally accommodate saturated steam at 200PSI and 450PSI. /Domain[0 1] Pneumatic Butterfly valves are typically used for transferring compressed and pressurized air. The force of the fluid over a pipe changes the pressure in the system, creating an impact on the spring force of the hydraulic actuator. Hence, different types of stainless steel butterfly valves material respond to different applications but distinct features such as corrosion resistance and machinability are universal for all stainless steel types. Concentric Disk butterfly valve are suitably designed with the following points: The Double Offset or Double Eccentric Valve is a high performance butterfly valve which is designed with two offsets of the stem. There are many types of stainless steel from 300 to 400 series, but 316L is preferred for butterfly valve.