Installation of mesh filters should be carried out in accordance with the recommendations of the manufacturers, but it is also important to consider:
1. Take a flax fiber string with enough threads so that its twisted diameter is approximately equal to the depth of the thread. The length of the string should provide for 1.5-2 times more windings than the number of thread turns.
2. Starting approximately 50-70 mm from the beginning of the string, slightly twist it, place it in the first thread turn, and, holding it with your hand, tightly wind a long branch of the string clockwise, placing it in each thread turn.
3. When reaching the end of the thread, continue winding with a second layer, shifting the turns to the beginning of the thread. The length of the second layer winding should be approximately equal to 2/3 of the thread length.
4. Wind the remaining end of the string (50-70 mm) similarly clockwise, from the end of the thread to its beginning.
5. Apply a layer of sealant to the winding surface.
6. Tighten the connecting elements by hand. With correct packing, the assembled element should turn 1.5-2 full rotations.
7. Continue tightening the element with a wrench or a torque wrench. In case the assembled element needs to be in a specific position, complete tightening it in the necessary position of the element.
With proper packing, during tightening, the force should not exceed the tightening torque listed below:
DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | DN65 | DN80 | DN100 |
---|---|---|---|---|---|---|---|---|
70 Nm | 95 Nm | 120 Nm | 150 Nm | 190 Nm | 230 Nm | 280 Nm | 350 Nm | 400 Nm |
DN | Nut/Bolt | Torque, Nm |
---|---|---|
15 - 32 | М 10 | 15 - 30 |
40 - 65 | М 12 | 35 - 50 |
80 - 100 | М 16 | 75 - 100 |
125 - 150 | М 16 | 80 - 120 |
200 | М 20 | 150 - 200 |
250 - 400 | М 24 | 340 - 410 |
500 | М 27 | 340 - 410 |
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