Our tap water meter is installed downstairs, and the valve behind the meter is replaced. Should the expenses be paid by the property or by our owners?

It depends on whether your water fee is paid directly to the water company or to the paying property. If it is directly handed over to the water company, the cost of replacing the valve shall be borne by the water company; But if it is handed over to the property, it depends on whether the owner wants to replace the valve or the property requires a unified replacement. If the owner wants to replace it, the owner will be responsible. If the property requires a unified replacement, the cost shall be borne by the property (the property may apply for a housing maintenance fund).