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Z41H
ZJFV/OEM
When installing Russian standard low-temperature gate valves, a series of safety precautions need to be followed to ensure the safety of operation and the long-term stability of the valve. Here are some key safety precautions:
1. Pre installation inspection: Before installing the low-temperature gate valve, it is necessary to conduct a comprehensive inspection of the valve to ensure that the valve chamber and sealing surface are free of dirt or sand adhesion.
2. * * Bolt tightening * *: All bolts at the connection points should be tightened evenly to ensure the firmness and sealing of the connection.
3. Packing inspection: Check whether the packing part is tightly compressed to ensure the tightness of the packing, and also ensure that the gate opens flexibly.
4. * * Check valve model and connection size * *: Before installing the valve, the user must check the valve model and connection size, and pay attention to the flow direction of the medium to ensure consistency with the valve requirements.
5. * * Reserved Drive Space * *: When installing valves, users must reserve necessary space for valve drives.
6. * * Electrical wiring * *: If the valve requires electric control, it should be wired correctly according to the electrical drawings to ensure the normal operation of the control system.
7. * * Regular maintenance * *: Gate valves must be regularly maintained and must not be bumped or squeezed at will to avoid affecting the seal.
8. * * Installation Location * *: Choose a suitable installation location that is easy to access and operate in a low-temperature environment, while considering the convenience of equipment maintenance.
9. Operation and maintenance of valves: After installation, the operation of low-temperature gate valves should be regularly checked and lubricated and adjusted as needed.
10. * * System Testing * *: After installation, a system test must be conducted to verify the normal operation of the low-temperature gate valve.
11. * * Prevent abnormal pressure rise * *: To prevent incomplete heating at the valve or water ingress at the valve packing, which can cause freezing at low temperatures, low-temperature flange ball valves, low-temperature flange globe valves, and low-temperature flange gate valves with flange structures should be selected.
12. Valve and pipeline configuration: Improper valve and pipeline configuration during installation may result in prestress, poor cold compensation capability of the pipeline, changes in valve position at low temperatures, or lack of support for the valve, leading to deformation at low temperatures.
13. Valve fixation: Improper door fixation can cause deformation of the insulation box at low temperatures, affecting the concentricity of the valve stem and body.
14. * * Design considerations * *: In terms of design, due to the different materials of the valve stem and valve sleeve, the coefficient of linear expansion is different. Generally, stainless steel is used for the valve stem, and brass is used for the valve sleeve. At low temperatures, the thread may bite, especially when using a concealed stem structure and fine thread. Therefore, flange gate valves with a rising stem lifting structure should be selected for low-temperature gate valves.
When installing Russian standard low-temperature gate valves, a series of safety precautions need to be followed to ensure the safety of operation and the long-term stability of the valve. Here are some key safety precautions:
1. Pre installation inspection: Before installing the low-temperature gate valve, it is necessary to conduct a comprehensive inspection of the valve to ensure that the valve chamber and sealing surface are free of dirt or sand adhesion.
2. * * Bolt tightening * *: All bolts at the connection points should be tightened evenly to ensure the firmness and sealing of the connection.
3. Packing inspection: Check whether the packing part is tightly compressed to ensure the tightness of the packing, and also ensure that the gate opens flexibly.
4. * * Check valve model and connection size * *: Before installing the valve, the user must check the valve model and connection size, and pay attention to the flow direction of the medium to ensure consistency with the valve requirements.
5. * * Reserved Drive Space * *: When installing valves, users must reserve necessary space for valve drives.
6. * * Electrical wiring * *: If the valve requires electric control, it should be wired correctly according to the electrical drawings to ensure the normal operation of the control system.
7. * * Regular maintenance * *: Gate valves must be regularly maintained and must not be bumped or squeezed at will to avoid affecting the seal.
8. * * Installation Location * *: Choose a suitable installation location that is easy to access and operate in a low-temperature environment, while considering the convenience of equipment maintenance.
9. Operation and maintenance of valves: After installation, the operation of low-temperature gate valves should be regularly checked and lubricated and adjusted as needed.
10. * * System Testing * *: After installation, a system test must be conducted to verify the normal operation of the low-temperature gate valve.
11. * * Prevent abnormal pressure rise * *: To prevent incomplete heating at the valve or water ingress at the valve packing, which can cause freezing at low temperatures, low-temperature flange ball valves, low-temperature flange globe valves, and low-temperature flange gate valves with flange structures should be selected.
12. Valve and pipeline configuration: Improper valve and pipeline configuration during installation may result in prestress, poor cold compensation capability of the pipeline, changes in valve position at low temperatures, or lack of support for the valve, leading to deformation at low temperatures.
13. Valve fixation: Improper door fixation can cause deformation of the insulation box at low temperatures, affecting the concentricity of the valve stem and body.
14. * * Design considerations * *: In terms of design, due to the different materials of the valve stem and valve sleeve, the coefficient of linear expansion is different. Generally, stainless steel is used for the valve stem, and brass is used for the valve sleeve. At low temperatures, the thread may bite, especially when using a concealed stem structure and fine thread. Therefore, flange gate valves with a rising stem lifting structure should be selected for low-temperature gate valves.
