Fire water supply system valve
(1) An automatic exhaust valve should be set at the highest point of the fire water supply system pipe:
(2) The check valve on the outlet pipe of the fire water pump should adopt a water hammer to eliminate the check valve. When the water supply height of the fire pump exceeds 24m, a hammer eliminator should be used. When a bladder-type air pressure water tank is provided on the water pipe of the fire water pump, no water hammer elimination facility may be provided.
2. Inspection of general valves
Valves are used to control the direction of water flow and the pressure of the flowmeter in the pipeline of the fire protection system. According to the use of the valves in the system, the valves can be divided into shut-off valves, check valves, safety valves and pressure reducing valves. Pressure reducing valves, pressure reducing valves and other important valves must be individually tested for strength and tightness at the scene, and in accordance with the "Industrial Metal Pipeline Engineering Construction Code"
3． Installation of valves for fire water supply systems
(1) The setting of the valve should be convenient for installation, maintenance and operation, and the installation space can meet the requirements of the valve's full opening and closing, and be marked:
(2) The valve has obvious opening and closing signs;
(3) Independent valves are installed at the joints between the main pipes of the fire water supply system and the water fire extinguishing system to ensure the independent use of each system.