Key Information about Butterfly Valves

1. Key Information about Butterfly Valves An important tool that is widely used to regulate, stop and start liquid flow is a valve. Butterfly valve is one of the several kinds of valves that allow easy use and regulation. It is a quarter-turn valve that ensures 90° rotation of its handle to facilitate easy shutting and opening of valve. Larger types come fitted with purported gearbox to ease the operations of the value. In this system, the handweels get connected to the stem. Different types of butterfly valves are available In general, butterfly valves feature following components: A round disc Top and bottom shaft bearings, Short circular body, Metal-to-metal or soft seats A stuffing box The construction of the valve body varies greatly. A design that is common is called the wafer that remains sandwiched between two flanges. Another type is lug wafer design that remains placed between two flanges using bolts which act as a connector between two flanges and protrude out through holes in the valve’s outer casting. Butterfly valves also come with threaded, flanged and butt welding ends, but are not commonly used. Quick facts about these valves: These are more advantageous than globe, gate, ball, and plug valves, especially when it is about large valve applications. Added advantages come in the form of cost, weight, and space. Furthermore, these valves also

2. demand low maintenance costs because of fewer moving parts and also feature no pockets to hold fluids. These valves are perfectly suited for applications like handling large flows of gases, liquids at lower pressures. Also, handling of liquids, slurries with high quantities of suspended solids becomes easier with butterfly valves. The built follows the principles of pipe damper. The flow control disc and the inside diameter of the adjoining pipe are approximately the same to allow rotation on horizontal or vertical axis. Common uses and applications of butterfly valves: It can have many uses and applications in different fluid services. They are great for slurry applications. Here are some of the common applications of these valves: Cooling air, water, gases, and also fire protection Slurry and allied services Vacuum control Water and steam services at high temperature and pressure conditions What advantages come with butterfly valves? Lightweight Because of a compact design, it demands less space than other valves Quick to operate Open and close quickly so less time consuming High-pressure recovery/low-pressure drop Come in large sizes as well Source Url- https://bit.ly/2XOn3Sc