Project Description
The difference between a Wafer and Lug type body Butterfly valve is only the provision of mounting of valve at pipeline. Lug type valve has lugs that are used to mount the valve to lugs that are attached the flanges on then ends of sections of pipe so that each length of pipe can be removed and replaced independently. Lug Type Butterfly Valve have main advantage is you can disconnect any flange of pipeline.
Lug-style valves have threaded inserts at both sides of the valve body. This allows them to be installed into a system using two sets of bolts and no nuts. The valve is installed between two flanges using a separate set of bolts for each flange. This setup permits either side of the piping system to be disconnected without disturbing the other side.
Material Specification
| SERIAL NO | QTY | DESCRIPTION | MATERIAL |
|---|---|---|---|
| 1 | 1 | BODY | CAST IRON / S.G.IRON ASTM A 216 GR. WCB ASTM A 351 GR. CF8 / CF8M / CF3 / CF3M |
| 2 | 1 | DISC | CAST IRON / S.G.IRON ASTM A 216 GR. WCB ASTM A 351 GR. CF8 / CF8M / CF3 / CF3M |
| 3 | 1 | SEAT | NITRILE / E.P.D.M. / SILICON / VITON / HYPALON |
| 4 | 1 | SHAFT | AISI S.S.410 / S.S 304 / S.S 316 / S.S 304 L / S.S 316 L |
| 5 | 1 | HANDLE | AISI S.S.410 / S.S 304 / S.S 316 / S.S 304 L / S.S 316 L |
Salient Features
- Flow Through Disc Ensuring Minimum Pressure Drop
- Soft Seat, Slim Seal Design
- Low Torque, Light Weight & Easy To Install
- Short Face To Face Dimensions
- Long Service Life
- Bi-Directional Valve
- Compact Size And Low Weight
Design and Testing International Standard
| End Connection | LUG TYPE |
| Flange Std | ISO 5211 |
| Face to Face | ISO 5752 / API 609 / BS 5155 |
| Design Std | BS 5155 / API 609 / IS 13095 / EN 593 / MSS SP 67 |
| Testing Std | API 598 / BS 6755 PART I / EN 12266 – 1 |