What is the role of gate valves in pipelines? and how to install?
Gate valves play a vital role in pipelines by controlling the flow of fluids. Their main function is to allow or prevent the passage of liquid or gas within the pipe. Here are some of the key roles of gate valves in pipelines:
Isolation: Gate valves are often used for isolation purposes. They can completely shut off the flow of fluid, isolating a section of pipe for maintenance, repair or to control flow direction.
On/Off Control: Gate valves provide a quick and efficient method of opening or closing flow. Their design allows for complete and unrestricted flow when the valve is fully open and complete closure when fully closed.
Low Pressure Drop: Gate valves typically have low pressure drop when fully open, meaning they create minimal resistance to fluid flow.
Installing a gate valve in a pipeline involves the following steps:
Choose the right valve: Consider factors such as fluid type, pressure, temperature and required flow control to select the right gate valve for your specific application.
Valve Orientation: Install the gate valve in the correct orientation. The flow direction should be consistent with the arrow indicated on the valve body.
Pipe preparation: Make sure pipes are clean and free of debris. Correctly align the flange on the valve with the flange on the pipe.
Flange Bolts: Use appropriate flange bolts to securely secure the gate valve to the pipe. Tighten the bolts evenly to ensure a proper seal.
Check valve position: Before operating a valve, check its position. Make sure the valve is fully open or fully closed as needed.
Operational Testing: Test the gate valve to ensure it operates smoothly and efficiently. Check for leaks and make necessary adjustments.
Regular Maintenance: Regularly inspect and maintain gate valves to ensure their continued reliability. Lubricate moving parts and address any wear or damage immediately.
| Size |
DN |
L |
D |
H |
| 2 1/2" |
65 |
190 |
178 |
370 |
| 3" |
80 |
203 |
191 |
420 |
| 4 |
100 |
229 |
229 |
447 |
| 5" |
125 |
254 |
254 |
547 |
| 6" |
150 |
267 |
279 |
607 |
| 8" |
200 |
292 |
343 |
754 |
| 10" |
250 |
330 |
406 |
890 |
| 12" |
300 |
356 |
483 |
1031 |
| MATERIAL SPECIFICATION |
|
|
|
|
| NO. |
Name |
Material |
|
|
| 1 |
Gasket |
Stainless Steel 304 or C95400 |
|
|
| 2 |
Bonnet |
Ductile Iron |
|
|
| 3 |
Packing |
Graphite |
|
|
| 4 |
Disc |
Ductile Iron +EPDM |
|
|
| 5 |
Body |
Ductile Iron |
|
|
| 6 |
Sealing Ring |
EPDM |
|
|
| 7 |
Bolt |
Stainless Steel 304 or Steel 1045 |
|
|
| 8 |
Gland |
Ductile Iron |
|
|
| 9 |
Nut |
Stainless Steel 304 or Steel 1045 |
|
|
| 10 |
Flat Washer |
Stainless Steel 304 or Steel 1045 |
|
|
| 11 |
Bolt |
Stainless Steel 304 or Steel 1045 |
|
|
| 12 |
Handwheel |
Ductile Iron |
|
|
| 13 |
Lock Nut |
C95400 |
|
|
| 14 |
Locating Screw |
Stainless Steel 304 or Steel 1045 |
|
|
| 15 |
Stem |
Stainless Steel 304 or C95400 |
|
|
| 16 |
Stem Nut |
C95400 |
|
|
| 17 |
Plug |
C95400 |
|
|
| 18 |
Lifting Nut |
CF8 or C95400 |
|
|
| 19 |
Pin |
Stainless Steel 304 |
|
|
| 20 |
Sealing Ring |
EPDM |
|
|
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