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What is a circle with a fork in CAD fire protection?
1. If you see a cross inside a circle in a CAD fire protection design drawing, it usually means "prohibited" or "not feasible".
2. In a fire protection system, such a legend may be used to identify a malfunction or improper operation of a certain equipment or component.
3. A flow meter is an instrument used to measure fluid flow. In a fire protection system, it can detect and ensure that the speed and pressure of water flow meet the requirements.
4. The role of a flow meter in a fire protection system is to ensure that the systems water supply capacity meets design and safety requirements, especially during testing and maintenance.
5. In a sprinkler system, a flow meter Used to monitor the flow and pressure of the booster pump group to ensure that the system can work effectively in case of a fire.
2. Summary of CAD legends for pipelines and valves
The summary of CAD legends for pipelines and valves is as follows:
1. Pipeline legends represent the visual symbols of pipelines on engineering drawings, which helps to understand the direction, connection method, and size of pipelines.
.2. Legend of Pipe Accessories: Elbows: fittings that change the direction of the pipe.
. Triple connector: a pipe fitting that connects three pipelines. Flange: A component used to connect pipelines or equipment, secured and sealed by bolted connections. Valve: A critical device that controls fluid flow, pressure, and direction in a pipeline system.III. Valve legend Gate valve: used for fully open or fully closed, with low fluid resistance.
. Globe valve: used to regulate fluid flow, with high fluid resistance w_600x400.jpg)
IV. Pipeline Connection Legend Welding Connection: Pipeline connection is achieved through welding, which has good sealing properties and is suitable for high-pressure and high-temperature environments.
. Threaded connection: Pipe connection is achieved through threads, suitable for low-pressure, small-diameter pipes. Flange connection: Pipeline connection is achieved through flanges and bolts, making it easy to disassemble and repair.5. Other related legends and fittings legends: such as tees, reducers, etc., used to change the direction, branching, and diameter of pipelines.
. Legend of water supply accessories: such as faucets, pipes, nozzles, etc., used for distributing, controlling, and transporting water. Fire protection equipment legend: such as fire hydrants, fire extinguishers, sprinkler systems, etc., used for fire prevention, extinguishing, and safe evacuation. Sanitary equipment and sink legend: such as toilets, sinks, bathtubs, sinks, etc., related to domestic water use. Legend of small water supply and drainage structures, such as rainwater collection tanks, septic tanks, sedimentation tanks, etc., used for collecting, treating, and distributing water resources. Legend of water supply and drainage equipment: such as water pumps, filters, pressurized equipment, etc., used for transporting, treating, and distributing water. Instrument legend: such as pressure gauges, flow meters, thermometers, etc., used for monitoring, controlling, and measuring water system parameters. The above legends have corre
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