With the vigorous development of my country's economy, more and more investment in urban construction, in which infrastructure construction is the focus of my country's economic construction, and the construction of municipal water supply projects is the first to bear the brunt, and it is still being updated, expanded and newly built. What valve is used for municipal water supply?

Municipal water systems are an integral part of urban utilities. Municipal water system planning is an integral part of the city's overall planning. A municipal water supply system usually consists of a water source, aqueducts, waterworks and a distribution network. After the water is drawn from the water source, it is sent to the water plant for water quality treatment through the aqueduct, and the treated water is pressurized and sent to the user through the water distribution network.

Municipal water supply is to transport water from the water source to the users through the water distribution network. In this process, it must go through the filtration of the raw water pump station, the sedimentation tank, the V-type filter tank, the clear water tank and the recovery tank, and every step of the filtration is inseparable. Open the valve, then what valve is used for municipal water supply, we can analyze it through the filtration of each layer.

Raw water pump station: The valve of the raw water at the head is characterized by a large valve diameter and does not need to be operated frequently. Most of them only need to be operated once a year or even several years, and the valve is in a normally open or normally closed state for a long time. Therefore, from the control method, more than 95% of the manual valves are selected. The main valves used are manual butterfly valve, manual gate valve, Y-type filter, etc.

Sedimentation tank: The flocs formed in the coagulation stage are separated from the water by gravity, in which the particles sink to the bottom of the tank, and the sludge is continuously accumulated and concentrated, and is regularly discharged from the tank. The valve and cut-off valve at the water outlet of the sedimentation tank are basically in a closed state, and a manual valve can be used. There are stricter requirements for the full travel time. The main valves used are electric butterfly valve, electric gate valve, electric ball valve, etc.

V-type filter tank: Hard particles such as quartz sand are added to the filter tank. The water outlet valve of the tank should be a hard-sealed wear-resistant valve, and the soft-sealed valve is easily worn by the hard particles in the water, causing leakage. The main valves used are hard-sealed butterfly valves, hard-sealed gate valves, etc.
Clear water pool: a pool set up to store purified clean water and meet the chlorination contact time. The main valves used are soft-sealed butterfly valves, soft-sealed gate valves, butterfly check valves, etc.
Recovery tank: remove a large amount of water in the sludge, recover the backwash water of the filter tank, and reduce the volume of the sludge to facilitate the subsequent sludge dewatering treatment. The main valves used are butterfly valves, knife gate valves, filters, etc.