Non-rising Stem Gate Valves and Rising Stem Gate Valves
Their respective advantages
In industrial and pipeline systems, both non-rising stem
gate valves and rising stem gate valves are common types of
valves. They each have unique design features and advantages, which are suitable for different application scenarios. Below, we will explore in detail the respective advantages of these two types of valves.
Advantages of non-rising stem gate valves
The non-rising stem gate valve is mainly composed of a valve body, a valve cover, a valve stem, and a gate plate. Its structure is simple and easy to maintain and upkeep. Firstly, the valve stem of the non-rising stem gate valve is cleverly installed inside the valve body, which avoids damage to the valve stem from external environments such as corrosion or physical damage, thereby significantly enhancing the durability of the valve.
Secondly, metal sealing is used between the gate and seat of the non-rising stem gate valve, which has superior sealing performance and can effectively prevent medium leakage, ensuring the safety and stability of the system. In addition, the flow path diameter of the non-rising stem gate valve is consistent with the pipeline diameter, which reduces flow resistance, lowers fluid pressure loss, and improves system efficiency.
Furthermore, the valve stem and gate of the non-rising stem gate valve are firmly connected, with flexible opening and closing and easy operation. Its appearance is simple and does not take up too much space, making it particularly suitable for small pipelines or low viscosity fluids. Due to the valve stem being hidden inside, it can also reduce the interference of external factors on the valve stem, further extending the service life of the valve.
Advantages of rising stem gate valves
Rising stem gate valves are also composed of components such as valve bodies, gate plates, and valve stems, with a simple and clear structure that is easy to install and maintain. Firstly, the stem of the rising stem gate valve is exposed, which allows for the convenient addition of additional driving mechanisms such as electric or pneumatic devices when needed, enabling remote control of the valve.
Secondly, the rising stem gate valve can completely cut off the flow of the medium in the closed state. It has good cutting performance. This feature makes the rising stem gate valve perform well in situations that require high sealing performance. In addition, the rising stem gate valve is suitable for various media, including liquids, gases, and powders. It has a wide range of applications.
Furthermore, the exposed stem of a rising stem gate valve increases the risk of corrosion and wear, but it also makes maintenance and replacement more convenient.
Meanwhile, due to the fact that the rising stem gate valve can provide greater leverage force, it makes the valve easier to open and close.
In addition, the open stem elastic seat seal gate valve also has advantages such as low fluid resistance, light weight, and easy operation. Plastic is widely used on the sealing surface material, which has good sealing performance. When fully open or fully closed, the sealing surface is isolated from the medium. It will not cause erosion of the valve sealing surface.
In summary, non-rising stem gate valves and rising stem gate valves each have unique advantages. The non-rising stem gate valve is suitable for small pipelines or low viscosity fluids due to its strong durability, good sealing performance, low flow resistance, and simple appearance. Rising stem gate valves, on the other hand, have been widely used in various industrial fields due to their good cutting performance, wide applicability, easy installation and maintenance, and ease of remote control.
When selecting valves, the appropriate valve type should be chosen based on specific application scenarios and requirements to ensure the safe and stable operation of the system.
