Installazione e montaggio di contatori dell'acqua

Water meter installation can only be carried out by a specialized organization with a license to perform this type of work. The installation of water meters should be carried out in accordance with the agreed design of the measuring node, requirements of regulatory documents, and installation instructions.

When installing a water meter, it is important to consider:

• A check valve should be installed after the water meter.
• Pressure gauges should be installed before and after mechanical water meters.
• Minimum lengths of calming sections should be observed before and after flow meters.
• Mesh filters must be installed before mechanical measuring devices, and filtration is recommended before ultrasonic flow meters.

Sequence for packing a threaded connection

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:

Tightening torques for flange connections

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