Low price big size gate valve
Low price big size gate valve which includes valve body, valve cover, valve stem, valve seat and gate plate, the valve cover is fixedly connected with the valve body, the upper end of the valve stem is connected with the quick drive device through the valve cover, and the lower end is connected with the gate in the valve body. The two sealing surfaces of the gate are connected with the left and right valve seats arranged in the valve body to form the main sealing pair. The diameter of the circular through hole on the side is larger than the diameter of the circular through hole on the inlet side; the gate at the upper end of the circular through hole on the outlet side is hinged with a pin shaft, a diameter larger than the circular through hole on the inlet side. The valve disc, the sealing surface of the valve disc and the small valve seat surface set on the peripheral step of the circular through hole on the inlet side form a secondary sealing pair. It has the functions of preventing forward and reverse water hammer, and can effectively cut off the fluid at the same time. Protect equipment such as valves, pipes and pumps from damage.
The above is a brief introduction to the relevant knowledge about Low price big size gate valve.