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Butterfly Valve

Body: ASTM A536 65-45-12, WCB, CF8M
Disc: ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
Seat: EPDM, NBR, FRM, PTFE
Nominal diameter: 2″ – 80″ (DN50mm – DN2000mm)
Top flange: ISO5211
Body style: Wafer, FLug, Flange

  • PRODUCT DETAIL

Body: ASTM A536 65-45-12, WCB, CF8M
Disc: ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
Seat: EPDM,NBR,FRM.PTFE
Body style:    Wafer, FLugFlange
Nominal diameter: 2″ – 80″ (DN50mm – DN2000mm)
Top flange: ISO5211

Butterfly valve refers to a kind of valve whose closure (disc or butterfly plate) is a disc and rotates around the valve axis to open and close. It is mainly used for cutting off and throttling in the pipeline. The opening and closing part of butterfly valve is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or regulating. Butterfly valves are usually less than 90 degrees open to close. Butterfly valves and butterfly rods have no self-locking ability. In order to locate the butterfly plate, worm gear reducer should be installed on the valve stem. The use of worm gear reducer can not only make butterfly plate have self-locking ability, make butterfly plate stop at any position, but also improve the operation performance of the valve.

Industrial butterfly valves are characterized by high temperature resistance, high pressure range, large nominal diameter, carbon steel body and metal ring instead of rubber ring. Large high temperature butterfly valve is welded by steel plate, mainly used for flue gas duct and gas pipeline of high temperature medium.

Types of Butterfly Valves

Based on the type of ends of the body butterfly valves are available in following types.

Wafer Butterfly Valve

Wafer concentric butterfly valve features a cartridge type seat, streamlined disc and strong stem-to-disc connection for easy use in many industrial applications such as food and beverage, pulp and paper, chemical, mining, water treatment, power plants, etc.

1: ISO5211 top flange together with stem square suitable for direct mounting of actuators
2: Stem anti-blowout design keep safety in field use
3: Dirtscraper prevents moisture penetrating into the shaft area
4:Multi-standard alignment holes suitable for various standard of flanges of EN1092 PN10, PN16, ASME B16.5              CLASS150, JIS B2239 10K, 16K, BS 10 Table D, Table E
5: Suitable for high pressure and full vacuum service due to the use of a cartridge seat design
6: No exposed pins or bolts for stem-to-disc connection
7: No need for flange gaskets
8: No risk of damage to the valve during installation in closed position
9: Bubble-tight shut of at full pressure rating
10: Large flow capacity and enough strength because of streamline disc design
11: Plug with O-ring sealing eliminates any leakage from the stem

butterfly valve size

NO. Part name Material
1 Body ASTM A536 65-45-12, WCB, CF8M
2 Disc ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
3 Seat EPDM,NBR,FRM.PTFE
4 Stem SS420,SS431
5 Lower Stem SS420,SS431
6 Retalner Nylon for DN50-DN300, SS304 for DN350-DN2000
7 Bearing RPTFE with Graphite on I.D.
8 Weather seal NBR
9 Nuts Stainless steel
10 Plug Steel galvanized for DN50-DN300, Cover plate for
DN350-DN2000 material same as body with SS304 bolts
11 Screw SS304

TECHNICAL DATA

Body style wafer
Nominal diameter 2″ – 80″ (DN50mm – DN2000mm)
Top flange ISO5211
Operating pressure 16bar for DN50-DN300, 10bar for DN350-DN2000
Temperature range -20 °C to + 140 °C (depending on pressure, medium and material)
Flange accommodation EN 1092 PN 6/PN10/PN16
ASME Class 150
AS 4087 PN10/ PN16
JIS 5K/10K
Applications Potable Water, Wastewater, Seawater, HVAC
Operation Hand lever, gear box, pneumatic actuator, electric actuator

DIMENSIONS (mm)

DIMENSIONS - Butterfly Valve

SIZE A B C D E F d G H L WT(kg)
DN INCH
50 2″ 126 78 13.5 94.3 9 50 8 70 31 43 2
65 2 1/2″ 134 84 13.5 107.6 9 50 8 70 45 46 2.5
80 3″ 138 92 13.5 123.9 9 50 8 70 64 46 3
100 4″ 167 114 13.5 157 11 70 10 90 91 52 4.5
125 5″ 180 129 17.5 181.5 14 70 10 90 110 56 6
150 6″ 203 144 17.5 212 14 70 10 90 146 56 7
200 8″ 228 179 24.5 267.4 17 102 12 125 193 60 12
250 10″ 266 216 25 323.6 22 102 12 125 241 68 17
300 12″ 291 247 25 377.4 22 102 12 125 292 78 25
350 14″ 332 273 30 425 27 125 14 150 329 78 41
400 16″ 363 317 30 484 27 125 14 150 376 102 58
450 18″ 397 348 39 537 36 140 18 175 425 114 80
500 20″ 425 393 39 589.5 36 140 18 175 475 127 97
600 24″ 498 453 49 693.1 46 165 22 210 573 154 169
700 28″ 626 531 90 928 63.1 254 18 300 674 165 252
750 30″ 660 564 90 984 63.1 254 18 300 727 165 290
800 32″ 666 601 90 1061 63.1 254 18 300 771 190 367
900 36″ 722 660 110 1170 74.7 254 18 300 839 203 465
1000 40″ 806 728 120 1290 83.7 298 22 350 939 216 606
1100 44″ 826 771 140 1404 94.7 298 22 350 1036 255 805
1200 48″ 941 874 150 1511 104.7 298 22 350 1137 276 900
1400 56″ 1000 940 175 1685 139.9 356 32 415 1351 279 1158
1600 64″ 1155 1085 195 1930 160 356 32 415 1548 318 1684
1800 72″ 1200 1170 195 2170 174.5 406 39 475 1703 356 2645
2000 80″ 1363 1360 245 2345 199 406 39 475 1938 406 4000

Lug Style Butterfly Valve

Llug concentric butterfly valve features a cartridge type seat, streamlined disc and strong stem-to-disc connection for easy use in many industrial applications such as food and beverage, pulp and paper, chemical, mining, water treatment, power plants, etc. Full rated unidirectional dead-end service is achieved by a lip designed in the lug body.

FEATURES
1,ISO5211 top flange together with stem square suitable for direct mounting of actuators
2,Stem anti-blowout design keep safety in field use
3,Dirtscraper prevents moisture penetrating into the shaft area
4,Suitable for high pressure and full vacuum service due to the use of a cartridge seat design
5,Full rated unidirectional dead-end service is achieved by a lip designed in the lug body
6,No exposed pins or bolts for stem-to-disc connection
7,No need for flange gaskets
8,No risk of damage to the valve during installation in closed position
9,Bubble-tight shut of at full pressure rating
10,Large flow capacity and enough strength because of streamline disc design
11,Plug with O-ring sealing eliminates any leakage from the stem

lug-butterfly-valve

NO. Part name Material
1 Body ASTM A536 65-45-12, WCB, CF8M
2 Disc ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
3 Seat EPDM, NBR, FPM
4 Stem SS420, SS431
5 Lower Stem SS420, SS431
6 Retainer Nylon for DN50-DN300, SS304 for DN350-DN2000
7 Bearing RPTFE with Graphite on I.D.
8 Weather seal NBR
9 Weather seal NBR
10 Plug Steel galvanized for DN50-DN300, Cover plate for
DN350-DN2000 material same as body with SS304 bolts
11 Screw SS304

PARTS LIST AND MATERIAL SPECIFICATION

Body style FLug
Nominal diameter 2″ – 80″ (DN50mm – DN2000mm)
Top flange ISO5211
Operating pressure 16bar for DN50-DN300, 10bar for DN350-DN2200
Temperature range -20 °C to + 140 °C (depending on pressure, medium and material)
Flange accommodation EN 1092 PN 6/PN10/PN16
ASME Class 150
AS 4087 PN10/ PN16
JIS 5K/10K
Applications Potable Water, Wastewater, Seawater, HVAC
Operation Hand lever, gear box, pneumatic actuator, electric actuator

lug butterfly valve size - Butterfly Valve

SIZE A B C D E F d G H J L WT(kg)
DN INCH
50 2″ 126 78 13.5 117 9 50 8 70 31 34 43 2.8
65 2 1/2″ 134 84 13.5 131 9 50 8 70 45 36 46 3.7
80 3″ 138 92 13.5 176 9 50 8 70 64 36 46 5.1
100 4″ 167 114 13.5 206 11 70 10 90 91 40 52 6.9
125 5″ 180 129 17.5 236 14 70 10 90 110 44 56 9.3
150 6″ 203 144 17.5 258 14 70 10 90 146 44 56 10.5
200 8″ 228 179 24.5 321 17 102 12 125 193 50 60 17.4
250 10″ 266 216 25 395 22 102 12 125 241 57 68 28.1
300 12″ 291 247 25 461 22 102 12 125 292 66 78 40
350 14″ 332 273 30 511 27 125 14 150 329 62 78 55
400 16″ 363 317 30 580 27 125 14 150 376 84 102 85
450 18″ 397 348 39 630 36 140 18 175 425 94 114 114
500 20″ 425 393 39 700 36 140 18 175 475 110 127 144
600 24″ 498 453 49 823 46 165 22 210 573 120 154 227
700 28″ 626 531 90 928 63.1 254 18 300 674 54 165 342
750 30″ 660 564 90 984 63.1 254 18 300 727 54 165 400
800 32″ 666 601 90 1061 63.1 254 18 300 771 60 190 485
900 36″ 722 660 110 1170 74.7 254 18 300 839 60 203 605
1000 40″ 806 728 120 1290 83.7 298 22 350 939 60 216 776
1100 44″ 826 771 140 1404 94.7 298 22 350 1036 50 255 985
1200 48″ 941 874 150 1511 104.7 298 22 350 1137 62 276 1190
1400 56″ 1000 940 175 1685 139.9 356 32 415 1351 62 279 1380
1600 64″ 1155 1085 195 1930 160 356 32 415 1548 65 318 2054
1800 72″ 1200 1170 195 2170 174.5 406 39 475 1703 70 356 3075
2000 80″ 1363 1360 245 2345 199 406 39 475 1938 75 406 4500

Flanged Butterfly Valve

Llug concentric butterfly valve features a cartridge type seat, streamlined disc and strong stem-to-disc connection for easy use in many industrial applications such as food and beverage, pulp and paper, chemical, mining, water treatment, power plants, etc. Full rated unidirectional dead-end service is achieved by a lip designed in the lug body.

FEATURES
1,ISO5211 top flange together with stem square suitable for direct mounting of actuators
2,Stem anti-blowout design keep safety in field use
3,Dirtscraper prevents moisture penetrating into the shaft area
4,Suitable for high pressure and full vacuum service due to the use of a cartridge seat design
5,Full rated unidirectional dead-end service is achieved by a lip designed in the lug body
6,No exposed pins or bolts for stem-to-disc connection
7,No need for flange gaskets
8,No risk of damage to the valve during installation in closed position
9,Bubble-tight shut of at full pressure rating
10,Large flow capacity and enough strength because of streamline disc design
11,Plug with O-ring sealing eliminates any leakage from the stem

lug-butterfly-valve

NO. Part name Material
1 Body ASTM A536 65-45-12, WCB, CF8M
2 Disc ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
3 Seat EPDM, NBR, FPM
4 Stem SS420, SS431
5 Lower Stem SS420, SS431
6 Retainer Nylon for DN50-DN300, SS304 for DN350-DN2000
7 Bearing RPTFE with Graphite on I.D.
8 Weather seal NBR
9 Weather seal NBR
10 Plug Steel galvanized for DN50-DN300, Cover plate for
DN350-DN2000 material same as body with SS304 bolts
11 Screw SS304

PARTS LIST AND MATERIAL SPECIFICATION

Body style FLug
Nominal diameter 2″ – 80″ (DN50mm – DN2000mm)
Top flange ISO5211
Operating pressure 16bar for DN50-DN300, 10bar for DN350-DN2200
Temperature range -20 °C to + 140 °C (depending on pressure, medium and material)
Flange accommodation EN 1092 PN 6/PN10/PN16
ASME Class 150
AS 4087 PN10/ PN16
JIS 5K/10K
Applications Potable Water, Wastewater, Seawater, HVAC
Operation Hand lever, gear box, pneumatic actuator, electric actuator

lug butterfly valve size - Butterfly Valve

SIZE A B C D E F d G H J L WT(kg)
DN INCH
50 2″ 126 78 13.5 117 9 50 8 70 31 34 43 2.8
65 2 1/2″ 134 84 13.5 131 9 50 8 70 45 36 46 3.7
80 3″ 138 92 13.5 176 9 50 8 70 64 36 46 5.1
100 4″ 167 114 13.5 206 11 70 10 90 91 40 52 6.9
125 5″ 180 129 17.5 236 14 70 10 90 110 44 56 9.3
150 6″ 203 144 17.5 258 14 70 10 90 146 44 56 10.5
200 8″ 228 179 24.5 321 17 102 12 125 193 50 60 17.4
250 10″ 266 216 25 395 22 102 12 125 241 57 68 28.1
300 12″ 291 247 25 461 22 102 12 125 292 66 78 40
350 14″ 332 273 30 511 27 125 14 150 329 62 78 55
400 16″ 363 317 30 580 27 125 14 150 376 84 102 85
450 18″ 397 348 39 630 36 140 18 175 425 94 114 114
500 20″ 425 393 39 700 36 140 18 175 475 110 127 144
600 24″ 498 453 49 823 46 165 22 210 573 120 154 227
700 28″ 626 531 90 928 63.1 254 18 300 674 54 165 342
750 30″ 660 564 90 984 63.1 254 18 300 727 54 165 400
800 32″ 666 601 90 1061 63.1 254 18 300 771 60 190 485
900 36″ 722 660 110 1170 74.7 254 18 300 839 60 203 605
1000 40″ 806 728 120 1290 83.7 298 22 350 939 60 216 776
1100 44″ 826 771 140 1404 94.7 298 22 350 1036 50 255 985
1200 48″ 941 874 150 1511 104.7 298 22 350 1137 62 276 1190
1400 56″ 1000 940 175 1685 139.9 356 32 415 1351 62 279 1380
1600 64″ 1155 1085 195 1930 160 356 32 415 1548 65 318 2054
1800 72″ 1200 1170 195 2170 174.5 406 39 475 1703 70 356 3075
2000 80″ 1363 1360 245 2345 199 406 39 475 1938 75 406 4500

Butt Welded Ends Types

This types of ends are used in high-pressure services and it directly welded to the pipe.

Butt weld type butterfly valve - Butterfly Valve

Seat Types

Butterfly valves can be metal-to-metal seated, soft seated, or with a fully lined body and disc. The first image is of soft seated fully lined body and disc valve. Second, is a soft seat with metal disk and the third is metal to metal seat type valve.

seat types 1024x607 - Butterfly Valve

The disk of butterfly valve can be concentric or eccentric with the valve body. Here I have shown three different arrangements of the disk with respect to a center of the valve body.

Zero offset Butterfly Valve

Zero offset design used for the valve that used in low-pressure and temperature services. In this design, the disc and shaft axis is concentric with the valve body. In the open position, the disc divides the flow into two equal halves, with the disc in the middle and parallel to the flow.

This type of valve has a resilient seat. Sealing is achieved when the disc deforms the soft seat. There is friction between the disk and seat during the full operating cycle which is the disadvantage of zero offset valve.

triple offset butterfly valve 1024x434 - Butterfly Valve

Double Offset Butterfly Valve

In Double Offset, the disk is offset from the valve center line and also from valve body center line. You can see this in the image where one and two are written. This creates a cam action during operation that lifts the seat out of the seal.

Double offset makes opening and closing smooth as friction is applicable only during the first few degrees of opening and final few degrees of closing, approx 10 degrees of opening and closing.

Triple Offset Butterfly Valve

In Triple Offset design the third offset created by the geometry design of the seating surface. The seat is machined into an offset conical profile resulting in a right-angled cone. You can see this in the third image with small enlargement of seating angle.

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; Metal seated valve use triple offset design.

Butterfly Valve Applications

  • A Butterfly valve is used in many different fluid services and they perform well in slurry applications also. They can be used in liquids, steam, cryogenics, cooling water, air, gasses, firefighting & Vacuum services.
  • Butterfly Valve is used in all type of industries application even in High-pressure and temperature services.

Butterfly Valve Advantages

  • Butterfly Valve is suitable for large valve applications due to Compact, lightweight design that requires considerably less space, as compared to other valves
  • Due to a quick operation, it needs less time to open or close
  • The maintenance costs are usually low compared to other valve types
  • A pressure drop across a butterfly valve is small
  • Valve with Non-metallic seating can be used in chemical or corrosive media.

Butterfly Valve Disadvantages

  • Throttling is limited to low differential pressure services and that too with a 30- to 80-degree disc opening.
  • There is a chance for cavitation and choke as the disk is always in the flow Turbulence flow can affect the disc movement.

Source: hardhatengineer.com

Summary
product image
Aggregate Rating
5 based on 1 votes
Brand Name
Epower Metals
Product Name
Butterfly Valve
Price
USD 1-10000
Product Availability
Pre-Order Only

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