Injap

Butterfly valves are low-profile devices used in industrial processes. They are relatively thin, which means that they can occupy less space in pipelines than other types of valves. They also come in a variety of body styles, including wafer and lug. Wafer-type butterfly valves are made of iron, which makes them more elastic and flexible than cast iron. They also offer a high level of chemical resistance. They also feature a lever handle for manual flow control. In addition to their low-flow capacity, they also provide a tight seal against two-way pressure. This type of valve uses a tightly-fitted seal, i.e., an O-ring, to safeguard against bi-directional pressure. A wafer-type butterfly valve is easy to install but cannot be used as an isolation valve. If you need an isolation valve, you'll need to purchase a larger valve.

Injap sehala, injap klak, injap tak balik, injap refluks, injap penahan atau injap sehala ialah injap yang biasanya membenarkan bendalir (cecair atau gas) mengalir melaluinya dalam satu arah sahaja.Skop aplikasi: industri kimia petroleum, kuasa elektrik, metalurgi, perubatan, hartanah, kejuruteraan perbandaran dan industri lain.