There are many types of expansion type double gate flat gate valve, there are K type double gate flat gate valve, there is spring type double gate flat gate valve, the former is generally used abroad, but its cost is high and the processing technology is complicated, so the price is also relatively It is much higher. Now our company has developed a spring-type double-gate flat gate valve to meet the requirements of the market. The cost is low. The mold used in the valve body is the same as that of the single-gate flat gate valve, but its function is similar to that of the foreign K-type double-gate flat gate valve. In the same way, the following are the characteristics of the expansion double gate flat gate valve produced by our company:

Expansion type double gate plate gate valve is suitable for chemical, petroleum, natural gas, power plant, coal mine, construction, steel, light industry and sewage treatment industries. Because there are often hard particles and fibrous dirt and other objects in the medium, the valve can play an excellent role as an opening and closing device in the pipeline system. Its driving methods include manual, pneumatic and electric.
1. The expansion type double gate flat gate valve has advanced design concept and has incomparable characteristics of ordinary valves. As a fluid control system, this product effectively solves the long-term unsolvable damage to the sealing surface of the gate valve caused by debris. And the phenomenon of leakage.
2. In order to meet the requirements of different users, the expansion type double gate flat gate valve has two systems: national standard and American standard.
3. The expansion type double gate flat gate valve adopts a spring self-sealing structure and a special type of sealing surface, so that the sealing pair always fits in any position, and can completely scrape off the residual dirt (such as sediment, sand, sand, etc.) on the sealing surface. Welding slag and other attachments), the sealing surface is not damaged in any way. Because the sealing surface is surfacing with high-hardness corrosion-resistant alloy materials, it has been proved by many manufacturers that this structure can not only scrape all kinds of dirt on the sealing surface, but also can Cut off the ф5mm stainless steel electrode, and the sealing surface is not damaged at all, and it works normally.
4. Since the spring self-sealing structure in the inflatable double gate flat gate valve can automatically compensate for the normal wear of the sealing surface, on the one hand, due to the extremely strong sealing performance, the leakage rate is zero, and on the other hand, the working life of the valve is greatly improved, which is beneficial for enterprises. Cost savings.
5. The valve adopts a thrust bearing mechanism, which can easily open and close the valve. For example, the PN4.0Mpa and DN300 patented valves can be easily opened and closed with a hand wheel by only one person. Tests have shown that under the same pressure level and caliber, the opening and closing torque of the patented valve is only half of that of the ordinary valve. one.
6. The expansion type double gate flat gate valve adopts a special switching mechanism, which prevents the common gate from being stuck due to the large temperature change and cannot be opened.
7. The expansion type double gate flat gate valve is equipped with an automatic sewage system at the bottom, which always keeps the inner cavity of the valve body clean and free of residues.
8. There is a dust-proof mechanism in the valve body to ensure that the inner cavity of the valve will not be immersed in dirt, and the internal mechanism will fail.