Views: 0 Author: J-VALVES Publish Time: 2024-04-25 Origin: Site
I.Advantages of the connection method
Easy to maintain and replace. The bolt-connection method makes the disassembly and installation between the bonnet and the valve body very convenient. With simple tools, bolts can be easily removed for inspection, repair or replacement of internal parts. This connection method is especially suitable for occasions that require frequent maintenance, such as the chemical and pharmaceutical industries.
Reliable sealing performance. Bolt-connected gate valves usually adopt gasket sealing. By evenly tightening the bolts, the sealing performance between the bonnet and the valve body can be ensured. This sealing method performs well under medium-and low-pressure conditions and can effectively prevent medium leakage.
Wide range of applications. Bolt-connected gate valves are applicable to a variety of pressure and temperature ranges and are not limited by the valve size. Whether it is a small diameter or large-diameter valve, the bolt-connection method can be used.
Firm connection and good sealing performance. The welding connection method directly connects the valve cover and the valve body together through welding to form an integral structure. This connection method has extremely high strength and sealing performance, which can effectively prevent medium leakage and is especially suitable for high-pressure and high-temperature working conditions.
Simple structure and clean appearance. The welded gate valve omits components such as bolts and gaskets, making the structure more concise and the appearance cleaner. This design not only reduces the number of components but also reduces the risk of failures caused by component damage.
Low cost and small installation space. Since welding connection does not require additional bolts and gaskets, costs and space can be saved during the manufacturing and installation processes. This connection method is especially suitable for occasions with limited space.
II. Application Scenarios and Selection Suggestions
Bolted Bonnet Gate Valve
The bolted bonnet gate valve is suitable for occasions that require frequent maintenance and replacement, such as the chemical, pharmaceutical, and food processing industries. Its advantages lie in its convenient maintenance and reliable sealing performance, and it can adapt to a variety of pressure and temperature ranges. If the working conditions have high requirements for sealing performance and regular internal inspection and maintenance are needed, the bolted bonnet gate valve is an ideal choice.
Welded Gate Valve
The welded gate valve is more suitable for high-pressure, high-temperature occasions that do not require frequent maintenance, such as the petroleum, natural gas, and power industries. Its advantages are its firm connection and good sealing performance, and it can withstand pressure and temperature changes under extreme working conditions. If the working conditions have extremely high requirements for the strength and sealing performance of the valve and the space is limited, the welded gate valve is a better choice.
Selection Suggestions
When users choose the connection method of the gate valve, they should comprehensively consider the following factors according to the specific working condition requirements:
Maintenance Requirements: If frequent internal maintenance and replacement of parts are required, it is recommended to choose the bolted bonnet gate valve.
Working Condition Conditions: If the working conditions have extremely high requirements for sealing performance and strength and do not require frequent disassembly, the welded gate valve is more appropriate.
Cost and Installation Space: If the installation space is limited and cost reduction is required, the welded gate valve is a better choice.
