90 degree metal elbow swivel nut elbow hydraulic jic elbow fittings

Factory 90 degree metal elbow swivel nut elbow hydraulic jic elbow fittings

1. Size difference The dimensions of the bends and elbow are designed and manufactured according to the requirements of the pipe.

However, the bending Angle of the pipe is relatively small, generally below 90 degrees, and the bending radius of the pipe is relatively large, and the bending radius is generally not less than twice the outer diameter of the pipe.

The elbow refers to the elbow with a larger bending Angle, generally above 90 degrees, and the bending radius is less than the outer diameter of the pipe.

That is to say, the elbow is more complex and changeable in the shape.

Two, application differences Both the elbow and the elbow act as the curved part of the pipe, but their application scenarios are different.

The bend is mainly used to change the direction of pipes, connect two different directions, and accept pipe vibration and expansion.

The elbow is often used in the branch pipe of the pipeline system, which is used with the pipe fittings such as three links and four links, to convert the flow direction between all angles of the branch pipe.

Three, the processing technology difference There are also some differences between the elbow and the elbow in processing.

The bending pipe is processed by hot rolling bending, hot extrusion and other ways of the pipe, and its molding is relatively simple.

The elbow forming is more complex, need to bend for many times, and through a variety of processes to shape and finish, to ensure the accuracy and reliability of the elbow.

1. Traffic:

The flow rate of a fire sprinkler nozzle refers to the amount of water it sprays per minute. The flow rate directly affects the fire extinguishing effect of the fire protection system. Fire sprinkler flow requirements will vary depending on the type and use of the building. Generally speaking, public buildings such as shopping malls, office buildings, etc. require larger flows to effectively control fires, while residential buildings may require smaller flows.

2. Pressure:

The pressure of a fire sprinkler nozzle refers to the intensity of the water spray. Appropriate nozzle pressure can ensure that the water flow can effectively reach the fire source and form an atomization state, improving the fire extinguishing effect. Pressure selection requires consideration of factors such as the height of the building, the location of the sprinklers, and the characteristics of the piping system.

3. Nozzle type:

Different types of fire sprinklers are suitable for different fire scenarios. Common sprinkler head types include sprinkler sprinklers, jet sprinklers, and rotary sprinklers. Sprinkler-type nozzles are suitable for a wide range of application scenarios and can spray water mist evenly and cover a wide area. Jet nozzles are suitable for places where remote fire extinguishing is required and can spray high-pressure water jets. Rotating sprinklers can cover a larger area and are suitable for large spaces and open areas.

4. Installation height:

The installation height of fire sprinkler heads has an important impact on the coverage and effect of water spray. Generally speaking, the installation height of sprinkler heads should be reasonably determined based on the height of the building, fire risk, and the requirements of regulations and standards. When selecting the installation height, you also need to consider the spray angle and coverage of the sprinkler head to ensure that the fire can be extinguished promptly and effectively when a fire occurs.

Cast Iron: Cast iron fire sprinklers are typically used in larger fire protection systems, such as industrial facilities or buildings. They have good durability and strength and can withstand high pressures. Cast iron fire sprinklers are designed for long-term use and perform well in harsh environments. However, cast iron fire sprinklers are relatively heavy and require additional support structures.

Plastic: In some light-duty applications, plastic fire sprinkler heads are an affordable option. They have lower cost, good corrosion resistance and lighter weight. However, plastic fire sprinkler heads may not be as durable as metal materials and may have limitations when exposed to high temperatures and pressures .

2. Fire sprinkler head parameters:

3. Fire sprinkler head composition:

There are many types of fire sprinklers, and different types of fire sprinklers have different structures. They are usually composed of sprinkler shells, nozzles, spring pistons and other components.

1. Nozzle shell:

The casing of a fire sprinkler is usually made of refractory materials, such as cast iron, steel or copper. The primary function of the enclosure is to protect the sprinkler head's internal mechanisms from the heat of the fire and other external factors. It also provides structural strength and stability to ensure the sprinkler head can function properly in harsh conditions.

2. Glass sand tube:

The glass sand pipe is one of the core parts of the fire sprinkler head. It is usually located on the top of the sprinkler head and contains a certain pressure of fire extinguishing agent, such as water or dry powder. When the fire temperature exceeds the set temperature of the glass sand pipe, the glass sand in the sand pipe will melt, causing the sprinkler head to start and release the fire extinguishing agent.

3. Nozzle throat:

The nozzle throat is the component of the fire sprinkler responsible for controlling the flow of water or fire extinguishing agent. It is located at the bottom of the sprinkler head and is connected to the water source or fire extinguishing system. Through the shape and size of the throat, the speed and range of fluid injection can be adjusted to suit different types and sizes of fires.

4. Spring piston:

The spring piston is a key component in the nozzle. It is responsible for keeping the fire extinguishing agent inside the nozzle until the glass sand tube melts and releases the pressure. Once the glass sand tube breaks, the spring-loaded piston pushes the fluid through the nozzle throat and onto the fire source.

5. Nozzle nozzle:

The nozzle of the nozzle is the component that determines the spray form and mode. It can be designed into different spray forms such as direct shot, fan shape, mist shape, etc. as needed to adapt to different types of fires. The design of the nozzle can control the angle, spray range and spray size of the spray to maximize the fire extinguishing effect.

Selecting the appropriate fire sprinkler head material requires consideration of many factors, including the intended use environment, required durability, cost, and the size of the fire protection system. Fire sprinkler manufacturers often offer a variety of material options based on different application needs to ensure optimal performance and reliability. No matter which material is chosen, proper installation, regular maintenance and testing of fire sprinkler heads are key to ensuring their proper operation

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