Why cannot use a wrench to forcibly open and close the stop valve J41W-16P?

In industrial pipeline systems, stainless steel flange stop valve J41W-16P is widely used in chemical, food, pharmaceutical and other fields due to its corrosion resistance and strong sealing. However, many operators have a misunderstanding in actual use: when the valve opening and closing resistance is large, they are accustomed to forcibly operate with a wrench with an extended lever arm. This practice not only violates the equipment design specifications, but also may cause safety hazards. This article combines the structural characteristics and practical application experience of stainless steel flange stop valve J41W-16P to analyze why such operations must be prohibited and emphasize the importance of standardized operations.

I. Structural characteristics of stainless steel flange stop valve J41W-16P

The core of stainless steel flange stop valve J41W-16P lies in its precise sealing design. The valve body and valve cover are connected by flanges, and the valve stem drives the valve disc up and down to realize the on-off control of the medium. Its sealing surface adopts the combination of plane and cone surface, with surfacing stainless steel and polytetrafluoroethylene gasket, which can adapt to a variety of media environments and ensure long-term stability.

The opening and closing process of this stop valve J41W-16P requires precise coordination between the valve stem and the valve disc. Under normal operation, the valve stem transmits torque through the handwheel to push the valve disc to fit or separate closely with the valve seat. Because the sealing surface material is relatively soft and a reasonable friction coefficient has been reserved during design, it is necessary to apply force evenly during opening and closing to avoid damage to the sealing performance due to sudden impact.

2. Hazards of forced operation: chain reaction from structure to system

In actual operation, the excessive torque applied by the wrench with a forcibly extended force arm seems to solve the problem quickly, but it actually buries hidden dangers.

First of all, as a key transmission component, the strength and toughness of the stop valve stem directly affect the life of the valve. Forced force may cause the valve stem to bend, the thread to wear or even break. Once the valve stem is damaged, the entire valve will not be able to open and close normally and needs to be replaced as a whole. A chemical plant was forced to stop production for maintenance because the operator forcibly closed the valve, causing the valve stem to break, resulting in a loss of tens of thousands of yuan.

Secondly, when forced to close, the sealing surface of the stop valve disc and the valve seat may be scratched or dented due to uneven impact force. This type of damage may not be obvious at the beginning, but it will gradually accumulate, resulting in a decrease in sealing performance. Especially when conveying high-temperature or corrosive media, even a small leak may cause equipment corrosion, media contamination, or even safety accidents.

In addition, the seal of the stop valve packing is also easily damaged due to abnormal operation. The function of the packing is to prevent the medium at the valve stem from leaking out. If the handwheel is forcibly rotated, the packing may loosen or break due to shear force and lose its sealing function. After the packing ages, not only does it need to replace the material, but it may also affect subsequent use due to improper maintenance.

3. The significance of standardized operation: the balance between safety and efficiency

The design of the stainless steel flange stop valve J41W-16P has fully considered the convenience of operation. The size of its handwheel has been calculated to achieve a sealing effect within a reasonable torque range. The following principles should be followed during operation:

Slow and uniform opening and closing: The valve opening and closing requires patience to avoid damage caused by impatient force.

Check the source of resistance: If it is difficult to open and close, first check whether the sealing surface is stuck by impurities or whether the grease is dry, rather than blindly increase the force.

Regular maintenance: Cleaning the sealing surface and checking the status of the packing can effectively extend the life of the valve.

Standard operation can not only ensure the safety of the equipment, but also reduce maintenance costs. For example, after a food processing plant introduced operation training, the valve failure rate dropped by 40% and the annual maintenance cost was reduced by 200,000 yuan. This shows that the operation method that follows the original design intention is often the most economical choice.

The reliability of the stainless steel flange stop valve J41W-16P is closely related to its operation method. It is forbidden to use a wrench to extend the force arm to force the switch, which is not only a requirement of equipment design, but also a basic principle of industrial safety. By understanding the working principle and structural characteristics of the valve, operators can perform tasks more scientifically and avoid long-term losses due to short-term convenience.

When looking for high-quality, reliable stop valves, YOYIK is undoubtedly a choice worth considering. The company specializes in providing a variety of power equipment including steam turbine accessories, and has won wide acclaim for its high-quality products and services. For more information or inquiries, please contact the customer service below:
E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229
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