Valves are generally classified into gate valves, globe valves, throttle valves, ball valves, butterfly valves, diaphragm valves, plug valves,check valves, safety valves, self-regulating pressure valves, steam traps, and other categories.
Classification by usage:
Shut-off valve category: Mainly used for cutting off and connecting the flow of media, includinggate valves, globe valves, diaphragm valves, plug valves, ball valves, butterfly valves, etc.
Regulating valve category: Used for regulating the flow and pressure of media, such as regulating valves, throttle valves, pressure reducing valves, etc.
Check valve category: Used to prevent backflow of media, covering various structures of check valves.
Diverting valve category: Used for distributing, separating, or mixing media, such asdistributing valves, steam traps, etc.
Safety valve category: Used for system overpressure safety protection, including various types of safety valves.

Actuallyvalve illustrations serve a symbolic and standard role. Generally speaking, the differences in valve illustrations are not significant, but there can be some regional differences.
Other Brass Valves from JKL Brass Valve