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Copper Tube Information

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5.7 mm od brass tube

author:MF manufacturerstime:2022-03-16 09:39:31

01


DN65

1. food、Commercial facilities such as shops are connected by a covered pedestrian street,And the buildings on both sides of the pedestrian street need to use the pedestrian street for safe evacuation.,The shops outside the buildings on both sides of the pedestrian street should be30mset upDN65the fire hydrant。

2. building height≤27mof residential buildings,When it is really difficult to set up an indoor fire hydrant system,Only dry fire standpipes and no hydrant boxes can be installedDN65of indoor fire hydrants。

3. Indoor fire hydrants should beDN65fire hydrant。

4. Each fire pump should be set on the outlet pipeDN65the test tube。

02


DN75

1. The diameter of the drain riser pipe at the end of the water test device of the automatic sprinkler system and other automatic water fire extinguishing systems should not be smaller thanDN75。

(5.7 mm od brass tube)2. Drainage riser pipe diameter at the end water test device of automatic sprinkler system and other automatic water fire extinguishing systems,It should be determined according to the discharge volume of the terminal water test device,should not be less thanDN75。

03


DN100

1. The water inlet pipe of the fire pool should not be smaller thanDN100。

2. The diameter of the overflow pipe of the high-level fire water tank should not be less thanDN100。

3. The diameter of the outlet pipe of the high-level fire water tank should not be less thanDN100。

4. urban population is less than2.5million hours,The diameter of the annular pipe network connected to the municipal pipe network should not be less thanDN100,The branched pipe network should not be less thanDN150。

5. The diameter of the outdoor fire-fighting water supply network pipes should not be less thanDN100。

6. The diameter of the vertical pipe of the indoor fire hydrant should not be less thanDN100。

7. The drain riser at the alarm valve should beDN100。

8. The diameter of the pressure test drainage pipe at the pressure reducing valve shall be determined according to the flow rate of the pressure reducing valve,but not less thanDN100。

04

(5.7 mm od brass tube)

DN150

1. When the suction pipe of the fire pump passes through the fire pool,Flexible casing should be used;When a rigid waterproof casing is used, a flexible joint should be provided on the water pump suction pipe,and the pipe diameter should not be greater thanDN150。

2. When there is a municipal fire hydrant in the municipal water supply network,Municipal fire hydrant should use diameterDN150outdoor fire hydrant。

05


DN200

1. The diameter of the municipal water supply pipe connecting the fire-fighting crane should not be smaller thanDN200。

2. The diameter of the annular water supply pipe network connected to the municipal fire hydrant should not be less thanDN150,The diameter of the branched pipe network should not be less thanDN200。

06


other

1. dry system、Air supply line for preaction system,When using steel pipes,The diameter of the pipe should not be less than15mm;When using copper pipes,The diameter of the pipe should not be less than10mm。

(5.7 mm od brass tube)2. It is advisable to reserve a connection on the domestic water supply pipeline indoors.DN15Connection for fire hose or light hose。

(5.7 mm od brass tube)3. The working pressure of the hydraulic alarm bell should not be less than0.05MPa,Piping connected to alarm valve,Its diameter should be20mm,The total length should not be greater than20m。

(5.7 mm od brass tube)4. The diameter of the connecting pipe of the short riser and the end water test device shall not be less than25mm。

5. The most unfavorable point sprinkler head controlled by each alarm valve group shall be provided with a terminal water test device,Other fire compartments、Floors should have a diameter of25mmtest valve。

6. The diameter of the inlet pipe of the high-level fire water tank should not be less thanDN32,The water inlet pipe should be equipped with a liquid level valve or a float valve。

7. The diameter of the single hole of the nozzle in the dry powder fire extinguishing system shall not be less than6mm。

8. Pressure gauges should be installed on the suction pipe and outlet pipe of the fire pump,The diameter of the pressure gauge should not be less than100mm,should be used with a diameter of not less than6mmThe pipeline is connected with the inlet and outlet pipes of the fire pump,And should set the shut-off valve。

(5.7 mm od brass tube)9. The suction pipe of the fire pump can be equipped with a pipe filter,The water passage area of the pipe filter should be larger than the water passage area of the pipe.4times,And the aperture should not be less than3mm。

(5.7 mm od brass tube)10. Indoor fire hydrant should be equipped with nominal diameter65Lined fire hose,length should not exceed25.0m;Fire hose reels should be configured with an inner diameter of not less thanф19fire hose,Its length should be30.0m;Portable faucets should be configured with a nominal diameter25Lined fire hose,length should be30.0m;Equivalent nozzle diameter should be configured16mmor19mmfire hose,But when the design flow of the fire hydrant is2.5L/sWhen should configure the equivalent nozzle diameter11mmor13mmfire hose;Fire hose reels and portable hoses shall be equipped with equivalent nozzle diameters6mmfire hose。