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2024-09-30

What are the characteristics of forged steel ball valves?

Forged steel ball valves, as an important type of industrial valve, are widely used in fields such as petroleum, chemical engineering, natural gas, and power. Their characteristics are mainly reflected in the following aspects: 1. High strength and durability • Material advantages: Forged steel ball valves are manufactured through forging processes. The materials undergo high-temperature and high-pressure treatment, resulting in fine grains, good density, high strength, and are not prone to deformation or fracture. They can withstand high pressure, high temperature, and impact working conditions.

2024-09-30

What are the precautions for installing American standard ball valves?

When installing American standard ball valves, to ensure their normal operation and long-term reliability, the following key points should be noted: I. Preparations before Installation 1. Inspect the valves and pipelines: Confirm that the specifications and models of the American standard ball valve are consistent with the design requirements, and check whether the valve is intact without cracks, sand holes or other defects. Clean the interior of the pipeline to remove oil stains, welding slag, iron filings and other impurities, to prevent these impurities from damaging the valve seat and ball after the valve is installed and affecting the sealing performance. Check the marking of the ball valve

2024-09-30

What specific occasions are forged steel ball valves suitable for?

Forged steel ball valves are suitable for the following specific occasions: 1. Petroleum and Gas industry: Long-distance pipeline transportation: Forged steel ball valves are widely used in long-distance pipelines for the transportation of oil and natural gas. They can withstand high pressure and harsh environments, ensuring the safety and stability of the transportation process. In urban gas pipeline systems, forged steel ball valves also play a significant role, being used to cut off or connect the medium in the pipeline.

2024-09-30

Why is it necessary to specify a sealing device for gate valves and globe valves

Gate valves and globe valves are required to have upper sealing devices, mainly based on the following considerations: First, prevent media leakage and packing protection Prevent medium leakage: When gate valves and globe valves are in the closed state, the valve stems remain at rest. If there is no upper sealing device, the medium may seep upward along the gap between the valve stem and the valve body, causing the medium to leak out. The upper sealing device can effectively prevent the leakage of the medium and ensure the working performance and safety of the valve. Packing protection: The packing box is usually sealed with flexible materials such as asbestos and polytetrafluoroethylene. Long-term contact with the medium makes it prone to erosion, aging and damage. The upper sealing device can prevent the medium from entering the stuffing box, protecting the packing and prolonging its service life. Second, environmental safety and energy saving

2024-09-30

Comparison and Selection Analysis of International Standards for Valves

A brief analysis of the Comparison and Selection of International Standards for Valves involves multiple aspects, including the history, current situation, standard content of different standard-setting institutions, and the considerations during selection. The following is a detailed analysis of this topic: I. Main valve standard-setting institutions 1. International Organization for Standardization (ISO) History and Current Situation: ISO is a global non-governmental organization founded in 1947, dedicated to formulating consensus international standards on a

2024-09-30

A Brief Discussion on the Advantages and Daily Maintenance Methods of High Platform Ball Valves

The advantages of high-platform ball valves 1. Easy installation: The high-platform ball valve adopts a new ISO5211 platform structure. There is a platform on the valve stem, allowing the actuator to be directly installed without the need for a bracket, which is convenient for installation and disassembly. When installing the actuator of a common ball valve, a bracket needs to be added first, and the valve fastening bolts need to be lengthened. This is not only troublesome but also costly. 2. Appearance and Craftsmanship: The high-

2024-09-30

What are the causes and solutions of internal leakage in forged steel ball valves?

The causes and solutions of internal leakage in forged steel ball valves are as follows: I. Causes of Internal leakage 1. Executive agency issues: The zero position setting of the actuator is inaccurate and the valve is not completely closed. The torque force of the actuator is insufficient to overcome the driving force of the medium, resulting in the valve not closing properly. The limit error of the actuator causes the valv

2024-09-30

What are the differences between high-platform ball valves and ordinary ball valves?

High-platform ball valves and ordinary ball valves have significant differences in structure, installation methods, performance characteristics, appearance, application scenarios and cost, as follows: Structure and installation method High-platform ball valve: It adopts a new type of ISO5211 platform structure. There is a platform on the valve stem, allowing the actuator to be directly installed without the need for a bracket. This design not only facilitates installation and disassembly, but also significantly enhances the stability between the valve and the actuator.

2024-09-30

The design and structural characteristics of forged steel gate valves

The design and structural features of forged steel gate valves are mainly reflected in the following aspects: Design features 1. Application and medium adaptability: Forged steel gate valves are mainly used to cut off or connect the medium in pipelines. They are suitable for the working pressure range of Class150 to 2500, as well as the working temperature range of -29 to 425℃ (carbon steel) or -29 to 500℃ (stainless steel). Different materials can be selected to adapt to various media such as water, steam, oil products, acetic acid, oxidizing media, and urea.