Flame arrester-ball valve
Ball valve is an important valve in industrial automation control system
Working principle
The working principle of the fire arrester is to cut off the supply of combustible materials by closing the valve, thereby preventing the fire from spreading through the pipeline. Under normal circumstances, the fire arrester is in an open state, allowing combustible materials to flow freely. However, when a fire occurs, the fire arrester will quickly sense the fire signal and trigger the closing mechanism to cut off the supply of combustible materials, thereby effectively preventing the spread of the fire. The fire arrester is usually composed of a valve body, a valve bonnet and a valve disc. Its closing mechanism can be composed of a solenoid valve, a pneumatic valve or a thermistor. The solenoid valve closes the valve through an electrical signal, the pneumatic valve controls the valve to close through the gas source pressure, and the thermistor triggers the closure by sensing high temperature. These mechanisms ensure that the valve is closed in a very short time to prevent the fire from spreading through the pipeline. Fire arresters are widely used in various buildings, factories, ships and other places, especially in key locations such as gas pipelines and oil depots. Its important role is to protect the safety of life and property and effectively control and isolate the spread of fire.
Advantages
Compact structure: The circular design gives the fire damper an advantage in installation space, especially in places where the ventilation duct system is more complex and the space is limited. It can better adapt to different installation environments, while occupying less space and saving valuable building space.
Good airflow performance: The circular shape is conducive to the smooth passage of airflow, reduces airflow resistance, improves the efficiency of the ventilation system, reduces the energy consumption of the ventilation system, and can save energy costs in long-term operation.
Strong sealing: High-quality sealing materials are usually used to effectively prevent the passage of smoke and flames during fires and ensure the effect of fire separation. Good sealing can reduce air leakage and improve the stability and reliability of the ventilation system.
Reliable action: After strict quality inspection and testing, it is ensured that it can act quickly and accurately when a fire occurs, close the valve and prevent the spread of fire. It has high reliability and stability and can work normally in various harsh environments. Convenient maintenance: The structure is relatively simple and maintenance and maintenance are relatively easy.
Strong corrosion resistance: The material is stainless steel, with strong anti-corrosion performance and long service life.
Flexible actuator drive: Accurate feedback and interlocking signals.
Installation
① Unpacking
Remove all flange protective covers and discard all packaging materials
② Check valve seat
Matching flange gasket on the valve seat surface. It must be clean, flat, scratch-free and corrosion-resistant.
③ Check gasket
Make sure the material is suitable for the application.
④ Lubricant lubrication
Lubricate all studs and nuts with appropriate thread lubricant. If the fasteners are high-temperature or stainless steel materials, use anti-seizure compounds such as molybdenum disulfide.
⑤ Gasket inside bolt ring
⑥ Connection
When setting the flame arrester housing flange to dock with the pipeline flange, pay attention to the lifting handle and top nut position of the flame arrester element to facilitate the removal of the flame arrester element in the future.
Product Parameters
Brand: Freya
Product name: Ball valve
Origin: Tianjin
Material: CF8
Applicable scenarios: steel, metallurgy, building materials
Maintenance methods
1. Only when the pressure before and after the ball valve is removed can the ball valve be disassembled and decomposed.
2. During the disassembly and reassembly process of the ball valve, it is necessary to protect the sealing parts, especially the non-metallic parts. It is best to use special tools for parts such as O-rings.
3. When reassembling the ball valve body, the bolts must be tightened symmetrically, step by step, and evenly.
4. The cleaning agent should be compatible with the rubber parts, plastic parts, metal parts and working media (such as gas) in the ball valve. When the working medium is gas, gasoline (GB484-89) can be used to clean metal parts. Non-metallic parts are cleaned with pure water or alcohol.
5. The individual parts that have been disassembled can be cleaned by immersion. Metal parts with non-metallic parts that have not been disassembled can be scrubbed with a clean, fine silk cloth soaked in cleaning agent (to avoid fiber shedding and adhering to the parts). When cleaning, all grease, dirt, glue accumulation, dust, etc. adhering to the wall must be removed.
6. After cleaning, non-metallic parts should be removed from the cleaning agent immediately and should not be soaked for a long time.
7. After cleaning, the cleaning agent on the washed wall surface should be evaporated (it can be wiped with a silk cloth that is not soaked in cleaning agent) before assembly, but it should not be left for a long time, otherwise it will rust and be contaminated by dust.
8. New parts must also be cleaned before assembly.
9. During assembly, metal debris, fiber, grease (except for specified use), dust and other impurities, foreign matter, etc. should not be allowed to contaminate, adhere or remain on the surface of the parts or enter the inner cavity.
Hot Tags: 1-1/2 inch cut off and regulating ball valve, China, manufacturers, suppliers, factory, buy, price, quotation
