Big Size Lug Type Butterfly Valve
Media: Water
Driving Mode: Manual
Connection Form: Lug Support
Structure: Centre Sealing
Seal Form: Force Sealed
Valve Stem: Normal
Product Introduction
Product Parameters
Lug Butterfly Valve
| NO. | Item | Standard |
| 1 | SIZE | DN25-2000 |
| 2 | Face to Face | API609, BS5155, DIN3202, ISO5752 |
| 3 | Connection Flange | DIN, BS, UNI, ISO, ANSI, AS, JIS |
| 4 | Mounting Flange | ISO5211 |
| 5 | Working Pressure | PN10/PN16/PN25 |
| 6 | Application | Fresh Water, Sea Water, Oil, Gas, Acid, Food, Steam |
| 7 | Application Temperature | -210-250?C |
| 8 | Shaft Disc Connection Type | Pin/Pinless/Double Half Shafts |
| 9 | Seat Type | Soft Back/Hard Back/Vulcanized |
| 10 | Connection Holes No. | 2/4 Holes |
| 11 | Body Type | 1/2 Piece |
STANDARD MATERIALS OF MAIN PARTS
| NO. | PART | MATERIAL |
| 1 | Body | Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze |
| 2 | Seat | NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA. |
| 3 | Shaft | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| 4 | DIsc | DI+Ni, Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, (DI/WCB/SS) coated (Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA) |
| 5 | Pin | Stainless Steel |
| 6 | Bushing | PTFE, Bronze |
| 7 | O Ring | NBR, EPDM, FKM |
| 8 | Operation | Hand Lever, Gear Box, Electric/Pneumatic/Hydraulic Actuator |
PRESSURE TEST
| Nominal Diameter | DN25-DN1200 | 1''- 48'' | DN25-DN1200 | 1''- 48'' |
| Nominal Pressure | 1.0 Mpa | 150 Psi | 1.6 Mpa | 250 Psi |
| Seal Test Pressure | 1.1 Mpa | 165 Psi | 1.76 Mpa | 275 Psi |
| Shell Test Pressure | 1.5 Mpa | 225 Psi | 2.4 Mpa | 375 Psi |
| Pressure Conversion |
1 Mpa=1, Bar=15Psi, PN20=Class 150
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Product Features
1. The valve structure is simple, casting letters are clear, smooth surface.
2. Light torque easy to open, it can serve long time.
3. The top flange adopts ISO5211 (it is easy to equip with electric/Pneumatic/Hydraulic actuator).
4. All parts are machined accurately, quality is much better.
5. We adopt better quality rubber seat for long service life.
6. Replaceable seat, it is easy to mend the valve.
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