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Casted Gate Valve

Non-Rising Stem Gate Valve

The Non-Rising Stem Gate Valve is also called the rotating stem gate valve. Stem and nut are arranged on the gate plate, handwheel rotation drive valve stem rotate to lift the gate, usually there is a trapezoidal thread at the bottom of the valve stem and the rotation movement is turned into a linear motion through the limit slot between the valve stem and the gate body and the gate body and the gate, that is, the operation torque is turned into operation thrust. When the valve is turned on, when the height of the gate is equal to the diameter of the valve 1: 1: 1, the channel of the fluid is completely unblocked, but at the run, this position cannot be monitored. In actual use, the vertex of the valve stem is used as a sign, that is, the position that is unmoved as its full opening position. The non-rising stem gate valve has the design characteristics of the ordinary wedge-type gate valve. The valve body has a guide mechanism, which can prevent the gate from rotating when the gate is turned on or closed, ensuring that the seal of the gate on the valve seat is accurate accordingly. At the same time, the wedge valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the service life of the valve.…
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Product Description
The Non-Rising Stem Gate Valve is also called the rotating stem gate valve. Stem and nut are arranged on the gate plate, handwheel rotation drive valve stem rotate to lift the gate, usually there is a trapezoidal thread at the bottom of the valve stem and the rotation movement is turned into a linear motion through the limit slot between the valve stem and the gate body and the gate body and the gate, that is, the operation torque is turned into operation thrust. When the valve is turned on, when the height of the gate is equal to the diameter of the valve 1: 1: 1, the channel of the fluid is completely unblocked, but at the run, this position cannot be monitored. In actual use, the vertex of the valve stem is used as a sign, that is, the position that is unmoved as its full opening position. The non-rising stem gate valve has the design characteristics of the ordinary wedge-type gate valve. The valve body has a guide mechanism, which can prevent the gate from rotating when the gate is turned on or closed, ensuring that the seal of the gate on the valve seat is accurate accordingly. At the same time, the wedge valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the service life of the valve.
Features & Benefits

The gate valve has a small fluid resistance, and the internal medium channel of the valve body is directly connected. The medium does not change 

its flow direction when flowing through the gate valve. The torque required for opening and closing is small, the body structure is simple, the 

manufacturing process is better, the sealing performance is good, and the corrosion of the dense cover when the full opening is less. The scope of 

applications is wide. Because the phenomenon of the long water hammer is not easy to occur. The medium can flow in any direction on both sides 

and easy to install.


General Information

Application Scenario: The non-rising stem gate valve is generally used in strict requirements on the height of the valve, but the use conditions are more harsh. For example, a high -temperature and high pressure working medium, toxic and harmful risk liquids require closure to ensure long-term 

sealing and leakage. Under normal circumstances, the requirements for use requirements are reliable. Such as the application of power industry, petroleum 

refining, petrochemical industry, marine oil, tap water engineering in urban construction, chemical industry and other fields.



Technical Specification

◎ Design Standard: API600, API 603, ASME B16.34

◎ Main Material: Carbon steel, Stainless Steel, Alloy Steel, Etc.

◎ Size Range: NPS2~NPS24/DN50~DN600

◎ Pressure Level: Class600~ Class 2500/PN100~PN420

◎ Temperature Range: -29℃~540℃


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