Isolation Valves are important because they allow sections of the water main to be shut down for repairs without affecting large areas and many customers. When an isolation valve does not operate properly it becomes necessary to replace that valve.
These isolation valves are especially important at fire hydrants. Fire hydrants are used not only for fire protection but also are used to flush and circulate water to ensure a high quality of water is delivered to our customers. Isolation valves at fire hydrants allow the fire hydrant to be maintained without disrupting water service to our customers.