D71X Manual Wafer Type Center-line Soft Seal Butterfly Valve
1.Easy structure, low costЈreliable sealing ,light weightЎquick open and closing
2.Integral vulcanization, stable rubber, low torque
3. Disc adopts steam-line design, reducing flow resistance coefficient and head loss.
4. Sealing ring is installed in the body.
5. Self-lubricating shaft sleeve.
6. No-toxic electrostatic spraying epoxy resin paintЈblue, thickness is more than 0.15mm
Manufacture Std.: API609, MSS SP-67,MSS SP-68,DIN3354
Face to Face: DIN3202ЎISO5752ЎBS EN558-1ЎAPI609,MSS SP-68
Flange: DIN2501ЎANSI B 16.5ЎANSI B 16.47ЎBS EN1092-2ЎBS4504
ISO 7005-2ЎJIS10K
Test: API598, EN12266.1ЎISO5208
| Sr.no | Part | Material |
| 1 | Body | GGG40 YGGG50 or WCB |
| 2 | Seat | NBR or EPDM |
| 3 | Disc | Ductile Iron +WCB |
| 4 | Stem | 2Cr13 or 304 |
| 5 | Bearing | Composite or Engineering Plastic |
| 6 | Sealing Ring | NBR or EPDM |
| 7 | Lever | DI |
| DN | L | H | Ho | A | B | 0.6MPa | 1.0MPa | 1.6MPa | |||
| Do | N-d | Do | N-d | Do | N-d | ||||||
| 50 | 43 | 63 | 235 | 270 | 110 | 110 | 4-14 | 125 | 4-18 | 125 | 4-18 |
| 65 | 46 | 70 | 250 | 270 | 110 | 130 | 4-14 | 145 | 4-18 | 145 | 4-18 |
| 80 | 46 | 83 | 275 | 270 | 110 | 150 | 4-18 | 160 | 8-18 | 160 | 8-18 |
| 100 | 52 | 105 | 316 | 270 | 110 | 170 | 4-18 | 180 | 8-18 | 180 | 8-18 |
| 125 | 56 | 115 | 340 | 310 | 110 | 200 | 8-18 | 210 | 8-18 | 210 | 8-18 |
| 150 | 56 | 137 | 376 | 310 | 110 | 225 | 8-18 | 240 | 8-22 | 240 | 8-22 |
| 200 | 60 | 164 | 430 | 353 | 150 | 280 | 8-18 | 295 | 8-22 | 295 | 12-22 |
| 250 | 68 | 206 | 499 | 353 | 150 | 335 | 12-18 | 350 | 12-22 | 355 | 12-26 |
| 300 | 78 | 230 | 570 | 380 | 150 | 395 | 12-22 | 400 | 12-22 | 410 | 12-26 |
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Velya Valve is located in oubei , zhejiang the valve Town . The company is committed to the production of HVAC Valves，water system valves，and energy saving management of heating and cooling systems.
