Double flanged butterfly valve features a bonded liner extending over the flanges. The double flange design is suitable for high pressure loading and for use in heavy industry, shipbuilding, severe vacuum applications and water treatment industry like potable water, water treatment and wastewater applications.
FEATURES
1,ISO5211 top flange together with stem heat suitable for direct mounting of actuators
2,Stem anti-blowout design keep safety in field use
3,Bonded seat protects the body and shaft out of contact with medium
4,No exposed pins or bolts for stem-to-disc connection
5,Single flange mounting is possible
6,Can be installed in any desired position
7,Bubble-tight shut off at full pressure rating
8,Large flow capacity and enough strength
PARTS LIST AND MATERIAL SPECIFICATION
| NO. | Part name | Material |
| 1 | Body | ASTM A536 65-45-12, WCB, CF8M Bonded with NBR or EPDM |
| 2 | Disc | ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462 |
| 3 | Stem | SS420,SS431 |
| 4 | Screw | SS304 |
| 5 | Retainer | SS201 |
| 6 | Weather seal | NBR |
| 7 | Bearing | RPTFE with Graphite on I.D. |
| 8 | Lower Stem | SS420, SS431 |
| 9 | Bottom cover | Same as body |
| 10 | Bolt | SS304 |
| 11 | Screw | SS304 |
TECHNICAL DATA
| Body style | Flange |
| Nominal diameter | 2″ – 88″ (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 150AS 4087 PN10/ PN16JIS 5K/10K |
| Applications | Potable Water, Wastewater, Seawater, HVAC |
| Operation | Hand lever, gear box, pneumatic actuator, electric actuator |
