Butterfly valves
WINDMILL VALVE Series Triple Eccentric butterfly Valve offers 2 main categories: the soft seal Type and metal to metal seal type. The metal Seal Series, WINDMILL adopt Multi Layer Metal Seat. The Connection with wafer type, Lug type and flanged type will be available.
Butterfly valve is a type of valve which can be used in a variety of chemical services. They are available with small dimensions allowing for use in areas where space is limited, and they allow a high coefficient of flow.
A butterfly valve is composed of body, soft seat or hard seat, disc, stem, packing, notched position plate, and a lever or gear. The seat is under compression when it is mounted in the valve body, thus making a seal around the periphery of the disc both upper and lower points where the stem passes through the seat. Packing is provided forming a positive seal around the stem for added protection in case the seal formed by the seat could become damaged.
Butterfly valve Design Construction and Specifications
WINDMILL Butterfly valves design and manufacture comply to MSS SP 67-1997
Each are tested according to API 598,and marking is per MSS SP-25
Face to face dimension complies to BSS5155
Butterfly valve Flanges comply to API 605
Pressure-temperature grade complies to ANSI B6.34
Construction is as follows
* Anti-Blowout spring pin
* Position Indicator plate
Standard Material Specification
| NO. | PART NAME | Standard | Stainless Steel | |||||||||
| 1 | Body | ASTM A216-WCB/316 overlay | ASTM A351-CF8M | |||||||||
| 2 | Disc | ASTM A216-WCB | ASTM A351-CF8M | |||||||||
| 3 | Disc Retaining Ring | ASTM A182-F316 | ASTM A182-F316 | |||||||||
| 4 | Steel Seal Ring | ASTM A182-F316 | ASTM A182-F316 | |||||||||
| 5 | Seal Ring | Graphite/PTFE | Graphite/PTFE | |||||||||
| 6 | Gland Flange | ASTM A216-WCB | ASTM A351-CF8 | |||||||||
| 7 | Shaft | ASTM A182-F316 | ASTM A182-F316 | |||||||||
| 8 | Gland | ASTM A182-F316 | ASTM A182-F316 | |||||||||
| 9 | Spacer Ring | ASTM A182-F316 | ASTM A182-F316 | |||||||||
| 10 | Gasket | SS316+Graphite | SS316+Graphite | |||||||||
| 11 | End Cover | ASTM A105 | ASTM A182-F316 | |||||||||
| 12 | Yoke | ASTM A216-WCB | ASTM A351-CF8M | |||||||||
| 13 | Bearing | ASTM A182-F316/Cr plated | ASTM A182-F316/Cr plated | |||||||||
| 14 | Hemicycle Ring | ASTM A182 -F316 | ASTM A182 -F316 | |||||||||
| 15 | Packing | Graphite/PTFE | Graphite/PTFE | |||||||||
| 16 | Screw | ASTM A193-B7 | ASTM A193-B8 | |||||||||
| 17 | Gland Bolt | ASTM A193-B7 | ASTM A193-B8 | |||||||||
| 18 | Disc Screw | S.S. | S.S. | |||||||||
| 19 | Disc Pin | S.S. | S.S. | |||||||||
| 20 | Body Stud | ASTM A193-B7 | ASTM A193-B8 | |||||||||
| 21 | Body Nut | ASTM A194 -2H | ASTM A194 -8 | |||||||||
Butterfly valve Dimensions data
Class 150 - ISO PN20(PN6,PN10,PN16)
| Valve Size | H1 | H2 | A | L | Approximate Weight(kg) | |||||||
| inch | mm | Lug | Wafer | flanged (Short Pattern) | Lug | Wafer | Flanged | |||||
| 3" | 80 | 157 | 239 | 45 | 48 | 48 | 114 | 17 | 15 | 22 | ||
| 4" | 100 | 179 | 280 | 45 | 54 | 54 | 127 | 19 | 17 | 25 | ||
| 6" | 150 | 194 | 310 | 45 | 57 | 57 | 140 | 30 | 27 | 39 | ||
| 8" | 200 | 230 | 330 | 75 | 64 | 64 | 152 | 37 | 33 | 48 | ||
| 10" | 250 | 280 | 380 | 80 | 71 | 71 | 165 | 50 | 45 | 65 | ||
| 12" | 300 | 310 | 450 | 100 | 81 | 81 | 178 | 81 | 69 | 100 | ||
| 14" | 350 | 340 | 500 | 110 | 92 | 92 | 190 | 96 | 86 | 125 | ||
| 16" | 400 | 365 | 510 | 110 | 102 | 102 | 216 | 137 | 122 | 177 | ||
| 18" | 450 | 436 | 640 | 135 | 114 | 114 | 222 | 158 | 141 | 205 | ||
| 20" | 500 | 450 | 660 | 150 | 127 | 127 | 229 | 214 | 191 | 277 | ||
| 24" | 600 | 530 | 820 | 170 | 154 | 154 | 267 | 291 | 260 | 377 | ||
| 28" | 700 | 600 | 903 | 170 | 165 | 165 | 292 | 426 | 380 | 551 | ||
| 30" | 750 | 630 | 930 | 170 | 190 | 190 | 318 | 616 | 550 | 798 | ||
| 32" | 800 | 696 | 967 | 175 | 190 | 190 | 318 | 728 | 650 | 943 | ||
| 36" | 900 | 760 | 1105 | 175 | 203 | 203 | 330 | 930 | 830 | 1204 | ||
| 40" | 1000 | 830 | 1175 | 175 | 216 | 216 | 410 | 1176 | 1050 | 1523 | ||
| 42" | 1050 | 860 | 1210 | 175 | 229 | 229 | 410 | 1344 | 1200 | 1740 | ||
| 48" | 1200 | 960 | 1320 | 200 | 254 | 254 | 470 | 1568 | 1400 | 2030 | ||
Class 300 - ISO PN50(PN25,PN40)
| Valve Size | H1 | H2 | A | L | Approximate Weight(kg) | |||||||
| inch | mm | Lug | Wafer | flanged (Short Pattern) | Lug | Wafer | Flanged Short(I) Short(II) | |||||
| 3" | 80 | 157 | 239 | 45 | 48 | 48 | 114 | 180 | 18 | 16 | 23 | 30 |
| 4" | 100 | 179 | 280 | 45 | 54 | 54 | 127 | 190 | 20 | 18 | 26 | 34 |
| 6" | 150 | 220 | 356 | 60 | 59 | 59 | 140 | 210 | 37 | 33 | 48 | 62 |
| 8" | 200 | 260 | 420 | 80 | 73 | 73 | 152 | 230 | 52 | 46 | 67 | 87 |
| 10" | 250 | 310 | 430 | 90 | 83 | 83 | 165 | 250 | 71 | 63 | 91 | 118 |
| 12" | 300 | 345 | 480 | 100 | 92 | 92 | 178 | 270 | 109 | 97 | 141 | 183 |
| 14" | 350 | 370 | 450 | 110 | 117 | 117 | 190 | 290 | 134 | 120 | 174 | 226 |
| 16" | 400 | 390 | 550 | 120 | 133 | 133 | 216 | 310 | 213 | 190 | 276 | 359 |
| 18" | 450 | 490 | 705 | 130 | 149 | 149 | 222 | 330 | 347 | 310 | 450 | 585 |
| 20" | 500 | 520 | 750 | 140 | 159 | 159 | 229 | 350 | 431 | 385 | 558 | 725 |
| 24" | 600 | 590 | 910 | 150 | 181 | 181 | 267 | 390 | 526 | 470 | 682 | 887 |
WINDMILL VALVE produce Tri-Eccentric butterfly valve,our company is a specialized supplier and manufacturer of Tri-Eccentric butterfly valve in china.Our Tri-Eccentric butterfly valve in the worldwide and enjoy good fame,If you are interested in any of Tri-Eccentric butterfly valve or your customers require to fill, please contact us right now! We will provide you with high-quality Tri-Eccentric butterfly valve and services
