Solenoid valve is an automatic basic component used to control the direction of fluid, which belongs to actuator; it is usually used on mechanical control and industrial valves to control the direction of medium, so as to control the valve switch.
Gas is an actuator that is suitable for city gas, liquefied petroleum gas, natural gas and other gases to do two-position on-off switching for heating and burning medium pipelines, and to automatically control the temperature. It is widely used in gas heat setting in textile industry, printing industry, kiln heating in glass and bulb industry, and gas heating automatic control system in other industries.
Gas is a safety emergency cut-off device for gas pipelines. It can be connected with the gas leakage alarm system or with fire protection and other intelligent alarm control terminal modules to realize on-site or remote automatic/manual emergency cut-off of the gas source to ensure gas safety. When harmful strong shock occurs, the valve will automatically close. The opening of the valve requires manual intervention and manual opening, which meets the safety management regulations and meets the characteristics of accident handling.
Gases at home and abroad are divided into three categories in principle, and are divided into six sub-categories based on the difference in valve disc structure and material and the difference in principle.
1. Direct acting gas:
The electromagnetic force generated by the electromagnetic coil lifts the closure from the valve seat. The valve opens; when the power is cut off, the electromagnetic force dissipates, the spring presses the closure on the valve seat, and the valve closes. But the diameter generally does not exceed 25mm. Features: It can work normally under vacuum, negative pressure and zero pressure.
2. Distribute direct-acting gas:
When there is no pressure difference between the inlet and the inlet, the gas working principle is a combination of direct acting and pilot. After electrification, the electromagnetic force directly lifts up the pilot small valve and the main valve closure one by one, and the valve opens. When the inlet and outlet reach the starting pressure difference, after the power is turned on, the electromagnetic force pilots the small valve, the pressure in the lower cavity of the main valve rises, and the pressure in the upper cavity drops, so that the main valve is pushed upward by the pressure difference; when the power is off, the pilot valve uses a spring Force or medium pressure pushes the closure, moving it downwards to close the valve. But the power is larger, and the characteristics are: zero pressure difference or vacuum, and high pressure can also operate safely. Request for required level fixtures.
3. Pilot gas:
The gas opens the pilot hole, the working principle of the gas: when the electricity is turned on. The pressure in the upper chamber drops rapidly, and a pressure difference between upper and lower is formed around the sealing member. The fluid pressure pushes the sealing member to move upward, and the valve opens; when the power is cut off, the spring force closes the pilot hole, and the inlet pressure passes through the bypass hole. A pressure difference is formed around the valve closing part, which is lower and upper, and the fluid pressure pushes the closing part to move downward to close the valve. It can be installed arbitrarily (customized) but must meet the fluid pressure difference condition. Features: The upper limit of the fluid pressure range is relatively high.
Solenoid valve is an automatic basic component used to control the direction of fluid, which belongs to actuator; it is usually used on mechanical control and industrial valves to control the direction of medium, so as to control the valve switch.
Gas is an actuator that is suitable for city gas, liquefied petroleum gas, natural gas and other gases to do two-position on-off switching for heating and burning medium pipelines, and to automatically control the temperature. It is widely used in gas heat setting in textile industry, printing industry, kiln heating in glass and bulb industry, and gas heating automatic control system in other industries.
Gas is a safety emergency cut-off device for gas pipelines. It can be connected with the gas leakage alarm system or with fire protection and other intelligent alarm control terminal modules to realize on-site or remote automatic/manual emergency cut-off of the gas source to ensure gas safety. When harmful strong shock occurs, the valve will automatically close. The opening of the valve requires manual intervention and manual opening, which meets the safety management regulations and meets the characteristics of accident handling.
Gases at home and abroad are divided into three categories in principle, and are divided into six sub-categories based on the difference in valve disc structure and material and the difference in principle.
1. Direct acting gas:
The electromagnetic force generated by the electromagnetic coil lifts the closure from the valve seat. The valve opens; when the power is cut off, the electromagnetic force dissipates, the spring presses the closure on the valve seat, and the valve closes. But the diameter generally does not exceed 25mm. Features: It can work normally under vacuum, negative pressure and zero pressure.
2. Distribute direct-acting gas:
When there is no pressure difference between the inlet and the inlet, the gas working principle is a combination of direct acting and pilot. After electrification, the electromagnetic force directly lifts up the pilot small valve and the main valve closure one by one, and the valve opens. When the inlet and outlet reach the starting pressure difference, after the power is turned on, the electromagnetic force pilots the small valve, the pressure in the lower cavity of the main valve rises, and the pressure in the upper cavity drops, so that the main valve is pushed upward by the pressure difference; when the power is off, the pilot valve uses a spring Force or medium pressure pushes the closure, moving it downwards to close the valve. But the power is larger, and the characteristics are: zero pressure difference or vacuum, and high pressure can also operate safely. Request for required level fixtures.
3. Pilot gas:
The gas opens the pilot hole, the working principle of the gas: when the electricity is turned on. The pressure in the upper chamber drops rapidly, and a pressure difference between upper and lower is formed around the sealing member. The fluid pressure pushes the sealing member to move upward, and the valve opens; when the power is cut off, the spring force closes the pilot hole, and the inlet pressure passes through the bypass hole. A pressure difference is formed around the valve closing part, which is lower and upper, and the fluid pressure pushes the closing part to move downward to close the valve. It can be installed arbitrarily (customized) but must meet the fluid pressure difference condition. Features: The upper limit of the fluid pressure range is relatively high.