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The worm gear butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When the rotation reaches 90°, the valve is in a fully open state.
Nominal size: DN 50 – DN1000
Connecting flange: EN 1092 PN 6/10/16 ASME Class 150 AS 4087 PN 16
Sealing surface of flange: EN 1092 Form A /B ASME RF, FF
Operating temperature:- 20 ~ 120 ℃
Working pressure: Max 16 bar
1.ensure that the valve is fully sealed in both directions
2.valve body and valve plate are finished, with low torque and long service life
3.Three bearings on the valve stem prevent the valve stem from deflecting, even after years of use. High positioning accuracy can still be ensured
4.Four flange positioning holes ensure correct valve position during installation
5.can be installed in any direction
6.Removable and recyclable materials
-chemical and petrochemical industries
-Water treatment and sewage treatment
-Pneumatic conveying
-Shipbuilding
-Energy engineering
| Parts | 1 | 2 | 3 | 4 | 5 | 6 |
| Name | Body | Seat | Disc | Stem | O-rings | Handle |
| Material | DI | EPDM | DI | SS304 | EPDM/NBR | Aluminum |
| NPS | DN | L | D1 | D2 | L1 | L2 | L3 | L4 | B | ISO 5211 Top Flange |
| 2″ | DN50 | 48 | 86 | 92.3 | 75 | 129 | 24 | 240 | 9 | F05 |
| 2.5″ | DN65 | 52 | 101 | 107 | 82 | 136 | 24 | 240 | 9 | F05 |
| 3″ | DN80 | 53 | 116 | 122 | 99 | 153 | 24 | 240 | 9 | F05 |
| 4″ | DN100 | 58 | 148 | 153 | 110 | 167 | 24 | 270 | 11 | F07 |
| 5″ | DN125 | 62 | 174 | 179 | 125 | 193 | 24 | 320 | 14 | F07 |
| 6″ | DN150 | 62 | 204 | 208.4 | 145 | 209 | 24 | 320 | 14 | F07 |
| 8″ | DN200 | 65 | 252 | 262.3 | 170 | 251 | 30 | 380 | 17 | F10 |
Lug butterfly valve