A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start flow. Butterfly valves are easy and fast to open. A 90° rotation of the handle provides a complete closure or opening of the valve. Large Butterfly valves are usually equipped with a so-called gearbox, where the handwheel by gears is connected to the stem. This simplifies the operation of the valve, but at the expense of speed.
| BRANDS | LYE, TEK, AFA, BELLS, VALMATIC |
| SIZE RANGE | 50mm, 80mm, 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 600mm, 700mm, 750mm, 800mm, 900mm, 1000mm, 1200mm, 1400mm |
| WORKING PRESSURE | PN16 |
| WORKING TEMPERATURE | Up to 80°C |
| MODEL | Wafer, Concentric, Eccentric |
| STANDARD | BS EN593 |
| CONNECTION | Flanged BS EN 1092-2 PN16 |
