Speisak original bellows sealed globe valve globe valve production

SpiraxSarcoSpirax original bellows sealed globe valveProduct Description

The diameter of the Speisak BSA1T globe valve ranges from DN15 to DN250, and various materials can be provided, including BSA1T made of cast iron, BSA2T made of ductile iron, and BSA3T made of cast steel. The connection specifications include flange, thread, and socket welding, and the pressure rating can reach PN40, ANSI 300, and CLASS 800. The working temperature can reach 425 ℃. Can be used in high-temperature systems Then, using one type of valve can meet various industrial application needs and ensure long service life, no repair, and strong stability The Speisak BSA1T globe valve adopts a stainless steel manifold body and a carbon steel valve cap. Under normal working conditions, the fluid does not touch the valve cap. Therefore, this valve is suitable for environments where the fluid is corrosive. The national standard corrugated pipe globe valve is suitable for cutting off or connecting regulating pipeline media in various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, and power industries with nominal pressure PN1.6~4.0MPa and working temperature -29~425 ° C. The use of corrugated pipe sealing design eliminates the problem of valve stem packing seal leakage and meets the requirements of leakage level. The zero leakage characteristic of SpiraxSarco globe valve BSA type globe valve improves equipment safety, saves a lot of energy, reduces maintenance costs, and provides a clean and safe working environment for industrial applications.

SpiraxSarco globe valve BSA type bellows sealed globe valve has a diameter ranging from DN15 to DN250 and is available in various materials, including BSA1 made of cast iron, BSA2 made of ductile iron, and BSA3 made of cast steel. The connection standards include flanges, threads, and socket welding, and the pressure rating can reach PN40, ANSI 300, and CLASS 800. The working temperature can reach 425C ° C and can be used in high-temperature systems Thus, a single valve can meet various industrial application requirements and ensure a long service life, maintenance free and sturdy

structural characteristics

1. Reasonable product structure, reliable sealing, excellent performance, and beautiful appearance;

2. The sealing surface is welded with Co based hard alloy, which is wear-resistant, corrosion-resistant, has good friction resistance, and has a long service life;

3. The valve stem undergoes quenching and surface nitriding treatment, which provides excellent corrosion resistance and friction resistance;

4. Double sealing, more reliable performance;

5. No upgraded handwheel

6. The material of the parts and the dimensions of the flanges and welding ends can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.

7. The valve core can be made into cutting and adjusting types as needed

Due to the certain gap formed between the valve stem and the valve seat, the medium passes through the valve and is subjected to its own force and external power, causing the valve stem to rotate to a certain extent, thereby changing the flow direction of the medium passing through the valve and improving the flow characteristics. It is very suitable for situations with high pressure requirements, large flow rates, and the need to adjust the temperature or pressure conditions of the medium.

1. The bellows globe valve can be used reliably when the medium flow rate is not large, and will not cause pressure loss due to opening too small.

When the medium flow rate is high, a spherical seal is generally used. In order to ensure that the sealing surface is not worn, it is necessary to strengthen the sealing and make the valve have good sealing performance. Compared with gate valves, bellows globe valves have a conical inner cavity on the sealing surface, which can reduce damage to the valve disc caused by fluid flushing during operation.

2. Bellows globe valves are suitable for pipeline systems with various pressure requirements, such as temperatures greater than 150 ℃.

When the operating pressure is less than 0.8 MPa and the temperature is greater than 100 ℃, stainless steel globe valves should be used; When the operating pressure is greater than 0.9 MPa, a stainless steel globe valve that can withstand high temperatures should be used; When the operating pressure is less than 0.7 MPa, stainless steel globe valves with characteristics such as heat resistance, corrosion resistance, acid and alkali resistance should be used; With the improvement of domestic production technology, most chemical enterprises are now able to produce stainless steel globe valves with characteristics such as corrosion resistance and high temperature resistance; It has been widely used in various corrosive media. Stainless steel globe valves adopt more advanced production processes and design theories, which can achieve characteristics such as valve heat resistance, corrosion resistance, high valve accuracy, and high operating pressure.

3. The bellows globe valve has a simple structure, easy maintenance, and can be sealed with all metal.

During operation, the valve stem does not rotate and the valve disc closes quickly, resulting in low opening and closing force. The valve disc has a good streamlined structure, good elasticity, and compensation ability. The reasonable structure of the flow channel can effectively prevent accidents caused by fluid backflow or improve the performance of the system. It has the advantages of small leakage, long service life, and reliable sealing. Safe and reliable use.

4. This product is not prone to leakage at room temperature and pressure, and is suitable for automatic control of various media;

Globe valves are commonly used at pipeline bends to cut off the medium on the pipeline. The valve body is equipped with a guide ring, which is used to change the direction of the valve stem through the guide ring. When gas passes through the guide ring, the packing flows in a streamlined manner, compressing the guide ring on the valve body to reduce pressure, while also reducing flow resistance and noise. Globe valves should also be designed with different structural forms according to the different media, such as sleeve structure and bellows structure. However, due to different materials and process requirements for valve seats, their manufacturing costs and usage expenses may also vary, which increases the difficulty of valve design.

5. This product can be widely used in automation systems in industries such as metallurgy and petroleum.

Globe valves can be customized according to user requirements. There are usually four structural forms of globe valves: fully open, globe, fully closed, and globe valves with balancing function. Common globe valves include gate valves, globe valves, and ball valves. The commonly used structural forms in ball valves are ball valves and gate valves. Among them, the valve seat type ball valve has a longer service life than the globe valve. The valve stem type only has two parts, the valve stem and the valve seat. The bellows globe valve has a good streamlined effect when the valve stem is always in working state and forms a certain distance from the valve seat. However, its uneven force can easily cause uneven wear between the valve stem and the valve seat, and the strong impact force generated between the valve disc and the valve seat during opening and closing can easily cause deformation, even rupture, or direct scrapping of the valve seat. Its service life is relatively short; The ball valve has a simple and compact structure, and the valve stem adopts a ball shaped sealing sleeve with balancing function, which can easily adjust the direction of medium flow or reduce the medium flow rate, but its working reliability is not high; When the globe valve adopts an unbalanced structure, uneven force and friction with its sealing surface can easily cause deformation of the valve seat, and the valve disc cannot maintain the flow rate of the medium when closed. Common opening forms include electric, pneumatic, etc.

SpiraxSarcoSpirax original bellows sealed globe valvetechnical specifications

Performance Specification for Bellows Globe Valve

Note: The series valve connection flange can be designed and manufactured according to user requirements.

Main external dimensions of bellows globe valve

In order for the bellows globe valve to function properly during use, it must be installed correctly. If not installed properly, the equipment may not function properly. So, how can we achieve correct installation? The following installation precautions need to be noted.

1、 Before installation, it is necessary to carefully check whether the model and specifications of the installed bellows globe valve meet the requirements. If there is a discrepancy with the design, it is necessary to replace the correct equipment in a timely manner.

2、 Check the condition of each component of the bellows globe valve to see if there are any incomplete or faulty parts, and also refer to the instruction manual to ensure that they meet the usage conditions before proceeding with installation.

3、 When installing, be sure to ensure that it is installed in place and do not use rough or forceful methods to avoid uneven force and damage to the equipment.

4、 After installation, it is necessary to carefully check again to confirm that it can function properly

5、 In addition to paying attention to the installation of bellows globe valves, it is also necessary to strictly follow the regulations for subsequent use. Improper operation can also cause equipment damage, which in the long run will affect the service life of the equipment.

Ordering Notice:

1、 ① Product name and model ② Caliber ③ Is there any accessory for us to correctly select for you ④ Operating pressure ⑤ Temperature of the medium used.

2、 If the company's model has already been selected by the design unit, please order directly from our sales department according to the model.

3、 When the usage situation is very important or the environment is complex, please provide design drawings and detailed parameters as much as possible, and our valve company experts will review and control them for you. If you have any questions: Please: We will do our best to provide you with high-quality service. We provide comprehensive and professional "valve system solutions" and are also willing to help users solve problems encountered in production.