How to drain the water in the roof tank of the hotel?

The drainage method of the roof water tank of the hotel is as follows:

1. A vacuum backstop can be installed at the top of the water tank to avoid secondary pollution caused by direct contact between the water tank and air, and a chlorinator can be installed at the entrance of the water tank for sterilization.

2. Hydraulic water level control valve refers to closing the water inlet valve hydraulically after the water level reaches a set height, and automatically replenishing water if the water level is low.