[ Huaqiang Security Network News ] What is the design code for indoor fire hydrants? The following is a brief introduction to the China Security Network.
Indoor fire hydrant
1. The selection of indoor fire hydrants shall meet the following requirements:
1. The indoor fire hydrant shall comply with the relevant provisions of the indoor fire hydrant GB3445;
2. The indoor fire hydrant SN65 can be used together with the SN25;
3. The fire hydrant water gun shall comply with the relevant provisions of the "Fire Water Gun" GB8181;
4. The fire hose should be equipped with a fire hose in the inner lining. The length of each hose should not exceed 25m. The fire hydrant of the SN25 should be equipped with a fire hose. The inner diameter of the hose should not be less than Ñ„19;
5. The matching of fire hydrant, hose and water gun should meet the following requirements;
When the outflow of the fire hydrant is 5L/s, the fire hydrant of SN65 is equipped with a water gun of Φ16mm and a rubber belt of Φ65.
The inner diameter of the SN25 fire hose reel hose should be Φ19 or Φ25, and equipped with a Φ6 water gun.
6. The internal structure of the rotating bolt is reasonable, the rotating parts are selected properly, and the rotation is guaranteed to be reliable without jamming and water leakage.
7. The internal structure of the pressure-reducing and hydrating fire hydrant is reasonable, the movable parts are selected properly, and the reliability should be ensured without the Dussel phenomenon, and the pressure-reducing hydrant should ensure the outlet pressure under various water supply conditions.
Second, the arrangement principle of the indoor fire hydrant is that the two water-filled water columns of the two water guns in the same plane reach any part at the same time, but one of the following conditions can be used to reach any part of a water-filled water column of one water gun:
1. When the indoor fire hydrant design water consumption is not more than 20L/S;
2. When all the buildings are equipped with automatic sprinkler systems.
3. Buildings with indoor fire hydrants shall be provided with indoor fire hydrants on all floors.
4. For public buildings with a roof helipad, fire hydrants shall be provided at the apron entrance or exit or at the non-electrical equipment room, and the distance from the apron shall not be less than 5.00m.
5. The height of the indoor fire hydrant bolt should be 0.7m~1.10m from the ground, but the height of the same building should be the same. The direction of the water should be downward or at a 90 degree angle to the wall where the fire hydrant is installed. When installing at other heights, Determined by expert argumentation.
Angle Valves
Globe Valves and angle valves are designed for throttling or regulating flow in commercial and industrial applications. Bronze, cast iron, or cast ductile iron materials. Threaded, flanged, or solder end connections.
Angle valves for use in commercial and industrial applications. Typical services include hot and cold water, HVAC, steam, compressed air, gas and other general utility services.
Vacuum angle valve is used for turn on or shut off the airflow in the vacuum pipeline, the applicable media is air and non-corrosive gases.
It has two structures, one is angle type and another is a 3-way type within an ISO-KF or ISO-F various flange end pre-pump port.
a) Small diameter (≤DN50) valve body are precision investment casting.
b) Large diameter (> DN50) valve body are molding shaped seamless steel or steel plate.
c) Bellows sealed structure can withstand 150ºCtemperature, metal sealed structure can withstand 450ºCtemperature.
d) Can install on any position to control the airflow in the vacuum pipeline, as an on-off valve purpose
Angle Valves, Angle Globe Valves, Brass Angle Valve, Zinc Angle Valve
ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsir-valve.com
