What water tank is used to decompress when supplying water to the fire zone?

The decompression tank is actually an ordinary fire water tank, but its installation position is quite special, which is located in the upper part of the low water supply zone of the building. Fire water in low-rise buildings is provided by the intermediate decompression tank instead of the roof water tank, thus reducing the pressure, so it is called decompression tank.

service regulations

(1) The effective volume of the decompression water tank shall not be less than 18 cubic meters and shall be divided into two compartments.

(2) The decompression water tank shall be composed of two water inlet and outlet pipes, and each water inlet and outlet pipe shall meet the fire water consumption required by the fire water supply system.

(3) The water level control of the inlet pipe of the decompression chamber should be reliable, and the water level control valve should be adopted.

(4) The inlet pipe of the decompression tank should have technical measures to prevent impact and overflow, and a emergency cut-off valve should be set on the inlet pipe to make the overflow water return to the fire pool.

How to use:

1, set a pressure reducing valve for the system pipe network;

2. Adopt pressure-reducing and pressure-stabilizing fire hydrant;

3. The outlet of the fire hydrant is provided with a decompression orifice plate.

reference data

Sohu. com:/A/ 150446926 _ 498 14 1