Globe valve quality appraisal

Globe valve is a common valve type mainly used to control the flow of fluids. Its characteristic is that the valve disc moves up and down in the valve body along the axis perpendicular to the flow direction of the medium, thereby opening or closing the medium in the pipeline. The stop valve has a simple structure, good sealing performance and reliable operation.

globe valve has a wide range of uses and is mainly used in pipeline systems in petroleum, chemical, metallurgy, electric power, pharmaceutical, food and other industries. It can be used to control the flow of water, oil, steam, gas and other media. In industrial production, stop valves are often used to regulate and control the medium flow and pressure in the process to ensure the stability and safety of the production process. In addition, stop valves are also used in building water supply and drainage systems to control the flow of hot water, cold water and sewage.    

Zhongke Testing provides stop valve quality appraisal services.

The quality appraisal of the stop valve can be analyzed from the following aspects:
1. Parts: All parts that make up the stop valve need to be inspected to ensure that the parts of the stop valve are of good quality.
2. Sealing performance: Sealing performance refers to the ability of each sealing part of the valve to prevent medium leakage. It is the most important technical performance indicator of the valve.
3. Overall performance: In order to ensure the performance of the stop valve, remove all burrs from all parts before assembly, clean the parts and the valve body cavity, and conduct complete machine inspection and testing after assembly. If the test results comply with the regulations, the complete valve is qualified, and surface grinding, cleaning, polishing, painting and packaging are allowed.
stop valve quality identification can be evaluated through the above aspects. Since all factors need to be fully considered, customized analysis needs to be conducted based on specific circumstances in practical applications.

GB/T 12235-2007 Steel stop valves and lift check valves for petroleum, petrochemical and related industries
GB/T 1951-2008 Marine low-pressure external threaded bronze stop valve
GB/T 28494-2012 Thermoplastic stop valve
GB/T 28776-2012 Steel gate valves, globe valves and check valves for the oil and gas industry
GB/T 34530.2-2017 Valves for low-temperature insulated gas cylinders Part 2: Stop valve
GB/T 584-2008 Marine flange cast steel stop valve
GB/T 587-2008 Marine flange bronze stop valve
GB/T 590-2008 Marine flange cast iron stop valve
GB/T 594-2008 Marine external thread forged steel stop valve
GB/T 595-2008 Marine external thread bronze stop valve
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