The company's production of direct-buried soft-sealed gate valves is the only promotion and application project for such products in the “Eleventh Five-Year” Technical Bulletin of the Construction Department. The product is divided into two types: telescopic and fine-tuned. The telescopic type is divided into metal and plastic. During the construction process, the telescopic type can be adjusted arbitrarily according to the distance between the buried depth of the valve and the ground, and the fine adjustment can be adjusted in the field. Both types of products can be buried directly into the ground during construction, without the need to build a well, reducing the area of pavement excavation. The extremely small well chamber can maintain the beautiful appearance of the road, reduce the construction difficulty and reduce the construction cost. The product has a designed service life of 30 years and has the advantages of long-term use without leakage and maintenance-free. It can also effectively prevent others from opening and closing valves and stealing covers.