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Triple eccentric butterfly valve.pdf
Butterfly valve is simple in structure, small in size and light in weight.
It can be opened and closed quickly at 90° and is easy to operate.
Has good fluid control characteristics.
Inside the cylindrical channel of the valve body, the disc-shaped butterfly plate rotates around the axis, and when it rotates to 90°, the valve is fully open. When the flange butterfly valve is in fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure difference generated through the valve is very small, so it has better flow control characteristics.
Butterfly valve has two types of sealing: elastic seal and metal seal.
Elastic seal valve, the seal can be set in the valve body or attached to the butterfly plate periphery.
Pressure Temperature Rating
Work Pressure: 16 bar
Testing Pressure:Shell 24 bar
Seat: 17.6 bar
Working Temperature:-20°C to 110°C EPDM Seat, -10°C to 80°C NBR Seat
Suitable media: Water,Oil & Gas
Part | Material | EN Spec. |
Body | Ductile Iron | EN-JS 1050 |
DISC | Ductile Iron | EN-JS 1050 |
Bronze | EN 1982 CC491K | |
Stainless Steel 304 | BS970 304 C15 | |
Stainless Steel 316 | BS970 316 C16 | |
Shell | Stainless Steel 410 | BS970 410 S 21 |
Stainless Steel 431 | BS970 431 S 29 | |
Seal Ring | EPDM/NBR | |
O-Ring | EPDM/NBR | |
Bushing | Bronze | EN 1982 CC491K |
Dimensions:
DN | mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 |
Inch | 2 | 2½ | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | |
A | 80 | 80 | 95 | 114 | 114 | 139 | 175 | 203 | 250 | 250 | 310 | 332 | 358 | 423 | 479 | 508 | |
B | 110 | 134 | 131 | 150 | 170 | 180 | 210 | 245 | 328 | 328 | 376 | 407 | 433 | 508 | 560 | 610 | |
C | 30 | 30 | 30 | 30 | 30 | 30 | 34 | 34 | 40 | 40 | 52 | 52 | 64 | 70 | 95 | 95 | |
L | 108 | 112 | 114 | 127 | 140 | 140 | 152 | 165 | 190 | 190 | 216 | 222 | 229 | 267 | 292 | 305 | |
DN | mm | 800 | 900 | 1000 | 1200 | 1300 | 1350 | 1400 | 1500 | 1600 | 1800 | 2000 | 2200 | 2400 | 2600 | 2800 | 3000 |
Inch | 32 | 36 | 40 | 48 | 52 | 54 | 56 | 60 | 64 | 72 | 80 | 88 | 96 | 104 | 112 | 120 | |
A | 533 | 602 | 656 | 781 | 915 | 925 | 925 | 950 | 1041 | 1156 | 1350 | 1430 | 1610 | 1795 | 1900 | 2040 | |
B | 620 | 692 | 735 | 917 | 990 | 1000 | 1000 | 1050 | 1150 | 1200 | 1360 | 1500 | 1650 | 1780 | 1900 | 2070 | |
C | 95 | 130 | 130 | 150 | 150 | 200 | 200 | 200 | 200 | 200 | 200 | 300 | 300 | 300 | 300 | 350 | |
L | 318 | 330 | 410 | 470 | 530 | 530 | 530 | 570 | 600 | 670 | 760 | 636 | 850 | 900 | 950 | 1000 | |