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Comparison of the uses of electric valves and solenoid valves
abstract：Electromagnetic valve: used for switch control of liquid and gas pipelines, it is a two position DO control. Generally used for control of small pipelines.
Electromagnetic valve: used for switch control of liquid and gas pipelines, it is a two position DO control. Generally used for control of small pipelines.
Electric valve: used for analog regulation of medium flow in liquid, gas, and wind system pipelines, and is controlled by AI. Electric valves can also be used as two position switch controls in the control of large valves and air systems.
Electromagnetic valve: can only be used as a switch quantity, is DO control, can only be used for small pipeline control, common in DN50 and below pipelines.
Electric valve: It can have AI feedback signal and can be controlled by DO or AO, which is more common in large pipelines and air valves.
1. Switch form:
The solenoid valve is driven by a coil and can only be turned on or off, with a short action time when turned on or off.
The drive of an electric valve is generally achieved by a motor, and it takes a certain amount of time to simulate the opening or closing action, which can be adjusted.
2. Job nature:
Electromagnetic valves generally have a small flow coefficient and a small working pressure difference. For example, the flow coefficient of a 25 caliber solenoid valve is much smaller than that of a 15 caliber electric ball valve. The drive of an electromagnetic valve is through an electromagnetic coil, which is relatively easy to be damaged by voltage shocks. Equivalent to the function of a switch, it has two functions: on and off.
The driving of electric valves is generally done by a motor, which is more resistant to voltage shocks. Electromagnetic valves are quick opening and quick closing, generally used in places with low flow and pressure, and require high switching frequency. Conversely, electric valves are used in places with high switching frequency. The opening degree of the electric valve can be controlled, with states of open, closed, half open and half closed, which can control the flow rate of the medium in the pipeline, but the electromagnetic valve cannot meet this requirement.
Electromagnetic valves can generally be reset when powered off, while electric valves require a reset device to achieve this function.
3. Applicable process:
Electromagnetic valves are suitable for some special process requirements, such as leakage, special fluid media, etc., and are relatively expensive.
Electric valves are generally used for regulation, but there are also switch quantities, such as at the end of fan coil units.
Electric valve: used for analog regulation of medium flow in liquid, gas, and wind system pipelines, and is controlled by AI. Electric valves can also be used as two position switch controls in the control of large valves and air systems.
Electromagnetic valve: can only be used as a switch quantity, is DO control, can only be used for small pipeline control, common in DN50 and below pipelines.
Electric valve: It can have AI feedback signal and can be controlled by DO or AO, which is more common in large pipelines and air valves.
1. Switch form:
The solenoid valve is driven by a coil and can only be turned on or off, with a short action time when turned on or off.
The drive of an electric valve is generally achieved by a motor, and it takes a certain amount of time to simulate the opening or closing action, which can be adjusted.
2. Job nature:
Electromagnetic valves generally have a small flow coefficient and a small working pressure difference. For example, the flow coefficient of a 25 caliber solenoid valve is much smaller than that of a 15 caliber electric ball valve. The drive of an electromagnetic valve is through an electromagnetic coil, which is relatively easy to be damaged by voltage shocks. Equivalent to the function of a switch, it has two functions: on and off.
The driving of electric valves is generally done by a motor, which is more resistant to voltage shocks. Electromagnetic valves are quick opening and quick closing, generally used in places with low flow and pressure, and require high switching frequency. Conversely, electric valves are used in places with high switching frequency. The opening degree of the electric valve can be controlled, with states of open, closed, half open and half closed, which can control the flow rate of the medium in the pipeline, but the electromagnetic valve cannot meet this requirement.
Electromagnetic valves can generally be reset when powered off, while electric valves require a reset device to achieve this function.
3. Applicable process:
Electromagnetic valves are suitable for some special process requirements, such as leakage, special fluid media, etc., and are relatively expensive.
Electric valves are generally used for regulation, but there are also switch quantities, such as at the end of fan coil units.