In addition to the advantages of elastic seat sealing gate valve, Z45 dark rod elastic seat sealing gate valve uses the overall rubber covering of the gate to produce deformation compensation effect to achieve a good sealing effect, overcoming the phenomenon of poor sealing, water leakage and rust of the general gate valve, and saving installation space more effectively. It can be widely used in tap water, sewage, construction, petroleum, chemical, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system and other fluid pipelines as a regulating and interception device.