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Selecting Valves for Corrosive Media Like Strong Acids and Alkalis..
Selecting valves for corrosive media like strong acids and alkalis is a critical and highly specialized issue. Improper selection can lead to rapid valve failure and media leakage, resulting in safety incidents, environmental pollution, and production interruptions.
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Sep,2517
common-errors-and-hazards-in-valve-installation..
As the core component of a fluid control system, the quality of its installation directly affects the operating efficiency, safety and service life of the system. During the actual installation process, various errors are prone to occur due to improper operation, insufficient technical knowledge or inadequate control of details, which may not only lead to leakage, increased energy consumption and other problems, but also cause equipment damage and safety accidents in serious cases. We have sorted out the common errors in valve installation from multiple dimensions and analyzed their causes
Aug,2526
Why is 304 material not recommended for bolts?..
304, 304L, 316 and 316L are stainless steel grade codes in the American material standard (ANSI or ASTM), belonging to the 300 series of austenitic stainless steel. The corresponding grades in the domestic material standard (GB/T) are 06Cr19Ni10 (304), 022Cr19Ni10 (304L), 06Cr17Ni12Mo2 (316), 022Cr17Ni12Mo2 (316L). This type of stainless steel is usually referred to as 18-8 stainless steel.
Aug,2518
Differences between Forged Steel Valves and Cast Steel Valves..
Which is better, forged steel valves or cast steel valves? Cast steel valves are made of steel used for casting. They are a type of cast alloy. Cast steel is categorized into three types: cast carbon steel, cast low-alloy steel, and cast specialty steel. Cast steel refers to a type of steel casting produced by the casting process. Cast steel is primarily used to manufacture parts with complex shapes that are difficult to forge or machine, yet require high strength and ductility. Forged steel refers to various forgings and forgings produced by the forging process. Forged steel parts are of hi
Aug,2512
Common Fault Analysis and Troubleshooting for Electric Valve Actuators..
An electric actuator primarily consists of a power board, main board, travel detection device, torque measurement device, AC contactor or frequency converter, motor, and reducer. An electric actuator uses a small motor to drive a worm gear in a first-stage reduction mechanism, capable of delivering multi-turn, angular, or linear motion to the valve. The actuator's motion output is determined by the characteristics of the valve being controlled.
Aug,2507
Why are valves set up like this?..
This regulation applies to the setting of gate valves, stop valves, ball valves, butterfly valves and pressure reducing valves in petrochemical plants. The setting of check valves, safety valves, regulating valves and steam traps shall refer to the relevant regulations. This regulation does not apply to the setting of valves on underground water supply and drainage pipes.
Jul,2529
【Valve Knowledge】Precautions for Check Valve Installation..
Model and specification verification Confirm that the type of check valve (such as lift type, swing type, butterfly type, etc.), nominal diameter, pressure level and pipeline system match to avoid leakage or failure due to specification mismatch.
Jul,2519
Abnormal pressure rise in the middle cavity of the gate valve..
Abnormal pressure rise in gate valve cavity refers to a phenomenon in which, when the valve is closed or partially closed, the trapped medium expands due to heat or pressure buildup, causing the pressure in the valve cavity to rise significantly, potentially exceeding the system design pressure. This situation can pose serious safety hazards and equipment damage, requiring targeted protective measures.
Jul,2512
Materials and conditions of use of valve stems and stem nuts..
During the opening and closing process of the valve, the valve stem is not only a moving part and a force-bearing part, but also a sealing part. At the same time, it is impacted and corroded by the medium, and also produces friction with the packing. Therefore, when selecting the valve stem material, it must be ensured that it has sufficient strength, good impact toughness, abrasion resistance, and corrosion resistance at the specified temperature. The valve stem is a wearing part, and attention should also be paid to the mechanical processing performance and heat treatment performance of the
Jun,2527
Running, bubbling, dripping, and leaking of valves..
Valve "running, bubbling, dripping, and leaking" are common fault phenomena in industrial equipment, which not only waste resources and pollute the environment, but may also cause safety accidents.
Apr,2530
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