It is a well known fact that water is one of the most important things used by humans not only for consumption and agriculture, but also for keeping industries running and in the area of energy produc

With modern rapid development of petrochemical industry, in particular the use of some of the conditions is very corrosive media, even stainless steel valves and lining rubber, ceramic valves also can

Butterfly valve include wafer type butterfly valve and lug style butterfly valve. The valve body and disc material is ductile iron or cast gray iron.

50% lower actuation torque compared to a centric butterfly due to the double eccentric operating principle

Flange butterfly valves are with simple and compact structure, stable positioning light weight. Benefit from the reasonable designs, the assembling, dismantling and installation of the flange butterfl

Butterfly valves possess many advantages over gate, globe, plug, and ball valves, especially for large valve applications.

A butterfly valve is essentially a valve that is used to isolate and control flow in cars in particular. They come from the quarter-turn valve family.

The second pendulum clock built by Christiaan Huygens, in 1673.The pendulum clock was invented in 1656 by Dutch scientist Christiaan Huygens, and patented the following year.