Steam solenoid valves are currently produced by domestic valve manufacturers and are mainly used in medical equipment, drying equipment, cleaning equipment, vacuum equipment, electroplating coating, distillation machines, oil filters, humidifiers, food machinery, petrochemical and other industries.
The gate valve in the application is selected as the shut-off medium gate valve. When it is fully opened, the entire flow is straight, and the pressure loss of the medium operation is minimal at this time. At present, the gate valves produced by valve manufacturers are generally used without frequent opening and closing, and can keep the stainless steel solenoid valve gate completely open or completely closed. Cannot be used for regulation or throttling purposes. When the medium is flowing at a high speed, the gate may vibrate when the gate is partially opened, and the vibration can damage the sealing surface of the gate and the valve seat, and the throttling may cause the gate to be eroded by the medium.
In terms of structural form, the main difference lies in the different forms of sealing elements used. Gate valves are usually divided into several different types according to the form of their sealing elements, such as wedge gate valves, parallel gate valves, parallel double gate valves, wedge double gate valves, and so on. The gate valve forms that usually use high-temperature solenoid valves are wedge-type and parallel-type.
Once it enters the open state, there is no longer contact between the valve seat of the stop valve and the valve disc sealing cover, so the mechanical wear of the sealing surface of the stop valve is small. Because most of the valve seats and discs of the stop valve are easier to repair or replace the sealing elements, There is no need to disassemble the entire high-pressure valve from the pipeline, so the situation where the door and the pipeline are welded together is very suitable. When the medium passes through this high-pressure valve, its flow direction will change, and the force will be greater.
Commonly used shutoff valves are as follows:
Angle type shut-off valve.
For the angle cut-off valve, the fluid only needs to change direction once, so that the pressure drop through the high-pressure valve of the stainless steel solenoid valve is smaller than that of the ordinary structure of the cut-off valve.
Direct current type shut-off valve.
For direct-flow or Y-type stop valves, the flow path of the valve body and the main flow path are oblique. The failure degree in this flow state is smaller than that of the traditional stop valve, so the pressure loss through the high-pressure valve is relatively small.
The third is the piston type shut-off valve.
This type of shut-off valve is a modification of the ordinary shut-off valve. In this kind of high-pressure valve, the plunger principle is usually used to design the disc and valve seat. After the valve flap is polished, the plunger is connected with the valve stem, and the seal is realized by two elastic sealing rings on the sleeve.
A set of rings separates them and presses the sealing ring around the plunger by the load exerted on the bonnet by the bonnet nut. Made of various materials, this high-pressure valve is mainly used to "open" or "close", but with a special form of plunger or special collar, it can also be used to adjust the flow.