At present, the high-temperature gate valves produced by valve manufacturers are mainly for high-temperature steam. Of course, we also have classifications of steam! Usually saturated steam and superheated steam, the saturated steam temperature is generally about 200 degrees. Although it is high temperature at this time, it is very simple. We only need to use cast steel materials and alloy steel seals! However, if it exceeds 300 degrees and is within 400 degrees, the cast steel users are still using it, but the sealing surface needs to be welded with Stellite cemented carbide.
The other is superheated steam, which is only available in power plants, as long as it exhibits high temperature and high pressure! All temperatures can reach more than 500 degrees. At this time, we need to use our power station gate valve. The material is solar water heater solenoid valve. The high temperature rigid material (chromium molybdenum steel, chromium molybdenum vanadium steel) can reach 540 degrees. The sealing also needs our hard Only high-quality alloy steel surfacing can guarantee the use. High-temperature water gate valves are used in special occasions, and they are all very good, so it is also very important to do a good job in maintenance.
Daily maintenance of high temperature gate valve is as follows:
Responsible for the maintenance of the high temperature gate valve actuator;
In the daily use of high-temperature gate valves, maintenance should be carried out in time;
During the maintenance period, frequent inspections and regular items should be checked and carried out in conjunction with maintenance;
During the inspection, pay attention to whether the metal structure of the gate valve is deformed, corroded, or worn under high temperature, check whether the opening and closing device is reliable, whether there are signs of corrosion in the connecting line, and whether the lubricating oil is sufficient;
Whether the accessories are clean, try not to accumulate debris, so as not to affect the use of the gate valve during the high temperature period of the two-position three-way solenoid valve manufacturer;
The common parts of the high temperature gate valve should be equipped with backup power source to prevent accidents, and at the same time, there should be spare parts;
A lot of maintenance work is done every year, including a lot of detail work.
The high temperature gate valve is mainly a sealing problem, in the case of high temperature! Material two-position three-way solenoid valve manufacturers basically have no problems, because the valve switch will be worn, including the packing.