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What is the difference between a high pressure gate valve and a high temperature stop valve? Source: Sansheng Trap Time: 2019-10-29 Clicks:
High-pressure gate valves are different from high-temperature shut-off valves
Despite providing very different functions, gate valves, globe valves, and check valves are often used together due to many similarities in building material grades, trims, and other technical specifications. But there must be some differences between all these types of valves.
The main difference between gate, check and check valves is the application and operation of each valve:
Gate valves are the most commonly used valves in piping systems. It is a universal service valve, mainly used for switching, non-restrictive applications. A partially opened gate valve will accelerate the corrosion caused by the goods in the pipeline and will damage the valve seat in a short time.
On the other hand, the shut-off valve is mainly used when the product needs to be throttled. By simply turning the handwheel, the rate at which goods flow through the valve can be adjusted to any desired level.
Unlike globe and gate valves, check valves do not operate at all. They are used to prevent backflow in the line, making it one of the most important components of any system.
Gate valves are also the most commonly used valve type. They can be fully open or fully closed and are not used to regulate flow. Gate valves are a cost-effective way to provide quality sealed valves with high temperature tolerances.
Globe valves are almost exclusively used for throttling or flow regulation. In addition, the shut-off valve works in only one direction. To help you remember this, an arrow on the side of each globe valve indicates the direction of flow.
Check valve
Check valves work automatically and most are not controlled by humans or any external control; therefore, most do not have any valve handles or stems. They are two-port valves, meaning they have two openings in the valve body, one for fluid entry and one for fluid exit, and for a variety of applications. Despite their various sizes and costs, check valves are usually very small, simple or cheap.
The body (housing) of most check valves is made of plastic or metal. An important concept of a check valve is the opening pressure, which is the minimum upstream pressure when the valve is operating. Generally, check valves are designed for and can therefore specify a specific opening pressure.
Materials for gate, globe and check valves
The two most common specifications for carbon steel valves are A105 and A216 WCB. It is important to note the different size ranges available in forged (A105) and cast steel (WCB). Although cast steel gate valves, globe valves and check valves can meet almost any size requirements of your application, forged steel gate valves, globe valves and check valves are only available for 4 ", most commonly 2" and below. Forging is very expensive with larger diameters, where casting is more cost effective.
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Address: Luoshe Town, Wuxi City, Jiangsu Province

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