1. Pay attention to the direction of media flow when installing. It should be consistent with the direction of the arrow in the valve body.
2. Install a check valve before the condensate from the trap enters the recovery manifold to prevent condensate from flowing back.
3. The open rod valve cannot be buried to prevent the valve stem from rusting. In the trench with the cover, the valve should be installed in a convenient place for maintenance and inspection and operation.
4. Some pipelines that require less water hammer impact or no water strike when closing, it is best to choose a slow closing butterfly check valve and a slow closing swing check valve.
5. When installing the threaded valve, it is necessary to ensure that the thread is intact, and the sealing material is coated according to the different media. When tightening, the force should be evenly distributed to avoid damage to the valve and valve fittings.
6. When the socket type welding valve is installed, the socket should have a gap of 1-2m to prevent the weld from cracking when the thermal stress is too large during welding.
7. When installing on a horizontal pipe, the valve stem should be vertically upward or inclined at an angle, and the valve stem is not allowed to be installed downward.
8. The bottom layer of the butt joint and the pipe joint shall be welded by argon arc welding. The valve shall be opened during welding to prevent overheating deformation.
9. Before installing the trap, be sure to purge the pipeline with pressurized steam to remove debris from the pipeline.
10. Steam traps should not be installed in series.
11. Diaphragm check valves are often used on pipelines that are prone to water hammer, because the diaphragm can well eliminate the water hammer generated when the medium is reversed, but it is generally used on low pressure and normal temperature pipelines due to temperature and pressure restrictions.
12. Install a filter before the trap to ensure that the trap is not blocked by the pipeline and clean the filter regularly.
13. Valves connected by flanges and threads should be closed during installation.
14. The condensate flow direction should be consistent with the trap installation arrow mark.
15. The trap should be installed at the lowest point of the equipment outlet to discharge condensate in time to avoid steam resistance.
16. When installing flanged valves, ensure that the end faces of the two flanges are parallel and concentric with each other.
17. Valves should be installed before and after the trap to facilitate the repair of the trap at any time.
18. Mechanical traps should be installed horizontally.
19, found that the steam trap running steam, it is necessary to timely discharge and clean the filter, according to the actual use of the situation to check, in case of failure to repair at any time.
20. Do not allow the check valve to bear weight in the pipeline. The large check valve should be independently supported so that it is not affected by the pressure generated by the piping system.
21. After the trap, the condensate recovery manifold cannot climb the slope, which will increase the back pressure of the trap.
22. If the trap is not installed at the lowest position of the equipment, a counter-bend should be added at the lowest point of the water outlet to raise the condensate level and then install the trap to avoid steam blockage.
23. The outlet pipe of the trap should not be immersed in water.
24. If there is condensate recovery after the trap, the trap outlet pipe should be connected to the manifold from the top of the recovery manifold to reduce back pressure and prevent backflow.
25. Each device should be fitted with a trap.
30. The lift horizontal flap check valve should be installed on the horizontal pipe.
31. Install a steam trap on the steam pipe. The main pipe should be provided with a condensate collecting well close to the radius of the main pipe, and then piped to the steam trap.
32. If there is condensate recovery after the trap, separate pipelines of different grades are required to be separately recovered.
33. The lift vertical flap check valve needs to be installed vertically.
34. When the mechanical trap is not used for a long time, it is necessary to remove the drain screw and let the water inside to prevent freezing.
35. Before the thermostatic trap, more than one meter of non-insulated subcooling pipe is required. Other forms of trap should be as close as possible to the equipment.
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