Mainly used in sanitary producing situation.
Sanitary butterfly valve
Sanitary stop valve
Adjusting the flow rate driven by electricity.
Electric control valve
Adjusting the flow rate driven by compress air.
A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk.
Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, a diaphragm, and a "weir or saddle" or seat upon which the diaphragm closes the valve.
A globe valve, different from ball valve, is a type of valve used for regulating flow in a pipeline, consisting of a movable disk-type element and a stationary ring seat in a generally spherical body.
Ball valve is a form of quarter-turn valve which uses a hollow and perforated pivoting "floating ball" to control flow through it.
A steam trap is a device used to discharge condensate and non condensable gases with a negligible consumption or loss of live steam.
A check valve, clack valve, non-return valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.