Through water pipes and valves, water reaches the entire house from the roof tank, so it is very important for the valve to work properly because sometimes if suddenly some parts of the house is shut off due to repair so it is done with the help of water valve but the valves are not working properly, the repair work is also delayed and water is also wasted. Some of the water valves in my house are not working properly and they need to be fixed... Can you please tell me how much a plumber charge to change water valves?