Butterfly valves have been around for a long time, and they are used for a variety of applications. They made their first appearance during the 1930s, and have been utilized by several industries. They are cast iron, cast steel and stainless steel material. The butterfly valve's name is based from the functionality of its disc. There are a few different types of butterfly valves, wafer, lug, and flange. Now we will talk about the difference between lug and wafer.
The lug version of the butterfly valve's design is similar to a 3-piece ball valve in that one end of the line can be taken off without having an effect on the opposing side. This can be executed by using threaded inserts, flanges, along with two sets of lugs (bolts) that don't utilize nuts since each flange features its own bolts. It's also important to note that you don't need to shut down the entire system in order to clean, inspect, repair, or replace a lug china zonkin valve butterfly valve (you would need to with a wafer butterfly valve).
The china zonkin valve wafer butterfly valve's function is to retain a seal to protect against dual-directional pressure differential in the flow of fluid. In other words, the wafer version of butterfly valves was designed to hold a tight seal, safeguarding against bi-directional pressure differential in order to avoid any backflow in systems that have been manufactured for uni-directional flow. This is accomplished by using a tightly fitted seal, such as an O-ring, gasket, precision machined, along with a flat valve face on the downstream and upstream sections of the valve. |
Ball Valve 