Butterfly valves types First: wafer butterfly valve (sandwich) : It is installed between two flanges on the line, this type is the most common at all because it is characterized by its cheap prices as it is produced at very large quantities around the world, and is used in all…
22
July
22
JulyButterfly valves operating
How butterfly valves are operated .....? The butterfly valve is opened and closed in several ways, depending on the torque required to open and close it . 1- Manually hand lever or hand wheel . 2- Gearbox 3- Pneumatic actuator ( Double acting, single acting ). 4- Electtric positioner…