Non-rising Stem Gate Valves Description
Non-risiong stem gate valve is a valve that drives the gate to rise and fall by rotating the valve stem. The valve stem thread and nut are built into the valve cavity and are in direct contact with the medium. It is suitable for full opening or full closing control of pipeline fluids and cannot be used for flow regulation. According to structural differences, some models (such as concealed stem elastic seat seal gate valves) can achieve high sealing opening and closing operations.
Performance characteristics
| Advantages | limiation |
|---|---|
| Compact design: the valve stem does not rise or fall, requiring little installation space. | Difficult to judge the status: an opening indicator needs to be installed additionally. |
| Anti-external interference: The valve stem is hidden in the valve body to avoid physical damage. | Complex maintenance: internal threads are difficult to lubricate and are easily corroded by media. |
| Two-way sealing: elastic seat seal type can adapt to pressure fluctuations. | Media restrictions: Not suitable for high viscosity or easily coking fluids |
Non-rising Stem Gate Valves specification
|
item |
Non-rising Stem Gate Valves |
|
Warranty |
1 year |
|
Pressure Rating |
Class 150 – Class 2500 |
|
Customized support |
OEM, ODM |
|
Place of Origin |
China |
|
Brand Name |
GNEE |
|
Application |
General |
|
Temperature of Media |
Normal Temperature |
|
Power |
Electric |
|
Media |
Water |
|
Port Size |
DN50-1000 |
|
Structure |
Non-rising Stem Gate Valves |
Non-rising Stem Gate Valves
Applications
Building systems:
Opening and closing control of indoor water supply and drainage pipelines (space-constrained scenarios).
Industrial fields:
Corrosive media cutoff in chemical and petroleum industries (corrosion-resistant valve body required).
Fully open/closed operation of slurry pipelines in sewage treatment plants (elastic sealing type).
Key points for installation and maintenance
Installation specifications: Ensure that the valve cavity is clean to avoid impurities blocking the gate plate; flange bolts must be tightened symmetrically.
Maintenance recommendations:
Regularly check the wear of the valve stem thread and the aging of the sealing surface (recommended every 6 months).
Elastic sealing gate valves need to monitor the elastic attenuation of rubber parts and replace them in time.
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