By Carson Hu
BSTV Product Page
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24 Oct,
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Over 60% of our nation's energy is supplied by oil and gas. This makes it crucial for drillers to have the right equipment to ensure rigs and pipelines continue operating at optimal levels. If an improper valve is put in place, the operation could be slowed or even shut down completely, taking a toll on the overall supply delivered from that location. To help better understand the importance of valves, we&#;ll be taking a closer look at two important types: gate valves and ball valves. Gate Valves Gate valves are suitable for both underground and above ground applications and are designed to operate at either fully open or fully closed capacity. While they are typically installed on pipelines to serve as isolating valves, they should never be used for regulating or control. Gate valves are best used when the minimal amount of pressure loss needs to be applied, as there are no obstructions when it is fully opened and when a free bore is needed. This type of valve is multi-turn, meaning that the operation relies on a threaded stem. The main benefit of this slower operation is a reduction of hydraulic shock caused by fluid changing direction or stopping suddenly. Gate valves can be used in many conditions, including: The movement of wastewater or neutral liquids that are between the temperatures of -20 to +70 degrees Celsius, with a maximum flow velocity of 5 m/s, and a standard pressure differential of 16 bar units. The movement of gases between the temperatures of -20 to +60 degrees Celsius, with a maximum flow velocity of 20 m/s and a pressure difference of 16 bar units. Gate valves can be found in two different types: wedge and parallel. Wedge shapes utilize two inclined seats and an included gate, while parallel types use a flat gate. The main difference lies in the methods of sealing with parallel gates relying on line force to aid in sealing, and wedge gates relying on torque. Overall, gate valve s are some of the most common types to be used, able to offer an easy method of valve sealing that is capable of operating even at high temperatures. Ball Valves Ball valves serve as a good option for shut-off valves. With a quick 90-degree turn, you can easily open and close the valve, reducing both time and the risk of leaking. Ball valves can be found in both full bore and reduced bore varieties, with full bore fitting the diameter of the pipeline, and the reduced bore having a smaller diameter. Full bore ball valves are more highly sought after due in large part to their ability to minimize pressure loss. Ball valves should only be used fully open or fully closed. This type is not recommended for flow regulation, as uneven pressure can cause the valve seat to become malformed over time. If this occurs, the potential for leaks increases. The biggest advantage of using this type of valve is the lowered cost of manufacturing and maintenance. Additionally, they are compact, easy to open and close, and require no lubrication while still maintaining a high level of sealing. Overall, high pressure ball valves are great for applications that require tight and secure shut off capabilities. This can be especially important when working with gases, as any leaks could be potentially hazardous. Knowing Your Needs These valve types are some of the most commonly used throughout many industries. Understanding their differences and their applications will ensure proper operation. If you have any questions or want to know more about what types of valves are best for your operation, don&#;t hesitate to reach out. The sooner you start to better understand your systems, the sooner you can begin running more efficiently overall.
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