1For elbows that have been stored for a long time, regular inspections should be carried out. The exposed processing surfaces must be kept clean and free of dirt. They should be neatly stored in a well-ventilated and dry indoor place. Stacking or open-air storage is strictly prohibited. Always keep the elbows dry and well-ventilated, maintain the cleanliness and tidiness of the equipment, and store them in accordance with the correct storage methods.

Storage of elbows

2During installation, the elbow can be directly installed on the pipeline according to the connection method and installed at the intended position. Under normal circumstances, it can be installed at any position on the pipeline, but it should be convenient for operation and inspection. Note that the medium flow direction of the stop elbow should be from the bottom of the longitudinal valve disc to the top. The elbow can only be installed horizontally. When installing elbows, pay attention to the sealing property to prevent leakage and avoid affecting the normal operation of the pipeline.

3When using ball valves, globe valves and gate valves with elbows, they should only be fully open or fully closed. They are not allowed to be used for flow regulation to avoid erosion of the sealing surface and accelerated wear. The gate valve and the upper threaded stop valve are equipped with reverse sealing devices. By turning the handwheel to the top position and tightening it, the medium can be prevented from leaking from the packing.