True or false, to ensure that a dry hydrant is properly back flushed once connected, you should open your tank-to-pump until all the water flows from your booster tank.

The assertion that you should open your tank-to-pump until all the water flows from your booster tank in order to ensure that a dry hydrant is properly back flushed is incorrect. Proper back flushing of a dry hydrant typically involves directing water through the hydrant to remove any debris or blockages. It is designed to function without the storage tank being emptied entirely.

Back flushing should be performed to verify that the hydrant functions correctly and does not have obstructions. Opening the tank-to-pump valve only partially or not at all is often sufficient for flushing the hydrant while maintaining the water level in the booster tank. This approach helps preserve the water reserves available for firefighting and other emergencies. Therefore, the concept of draining the booster tank is not aligned with standard practice for operating dry hydrants.