According to control method: manual, electric, hydraulic.
According to function: Flow control valves (throttle valves, speed control valves, flow divider/combiner valves), pressure valves (relief valves, pressure reducing valves, sequence valves, unloading valves), directional valves (solenoid directional valves, manual directional valves, check valves, hydraulically controlled check valves).
According to installation method: Plate valves, pipe valves, stack valves, threaded cartridge valves, cover valves.
According to operation method: Manual valves, mechanical valves, electric valves, hydraulic valves, electro-hydraulic valves, etc.
