Irrigation Meter Class A Water Meter

This water meter is suitable for horizontal installation only. Under no circumstances must this meter be installed vertically or on its side.

This water meter must be installed with a straight length of pipe free of valves, bends, and fittings equal in length to 10 X the diameter of the meter fitted upstream of the water meter and a straight length of pipe free of valves, bends, and fittings equal in length to 5 X the diameter of the meter fitted downstream of the water meter.

Note: This is a cold-water meter with a maximum working temperature of 50 °C. Should the water temperature at the metering point exceed this, this meter will be damaged irreparably. N.B. Do use heat when installing this meter in the pipeline. Heat travels through the pipe during this process and this will damage the internals of the water meter irreparably.

Any position where the meter may be subjected to vibration, shock, cavitation, water hammer or surging due to rapid operation of valves etc. must be avoided as this will affect the meters accuracy and damage to the meter will result.

Ensure that the 2 sections of pipework at the metering point line up correctly and that the gap size for the meter is correct to prevent damage to the meter and meter body. Under no circumstances must the meter be used to pull the pipeline together. Any Mechanical or Shear stresses exerted on the meter body due to poor installation practices will damage this water meter irreparably.

Precautions must be taken to prevent freezing. A meter will be damaged and could even burst if the water freezes. The meter should also be installed at least one meter away from
any cold/freezing point like a standpipe for example where the water can freeze back down the pipeline from that point.

1. This meter must be fitted horizontally with the counter on top. Please ensure that the installation is level.
2. Select a position where the water meter will always be full of water. Never position a water meter at the discharge end of the pipeline.
3. An arrow is cast into the body of the water meter to indicate direction of flow. Take note of the direction of flow in the pipeline and ensure that the meter is installed the correct way around when fitting the meter.
4. It is advisable to fit an isolation both upstream and downstream of the water meter to prevent backflow and for ease of maintenance.

1. When replacing an old meter, clean the existing flange faces thoroughly with a wire brush. Make sure to remove all remnants of old gasket material and debris.
2. Insert the bolts into the holes of the meter flange, positioning the bolt heads towards the meter and the threaded ends facing outward towards the pipeline.
3. Position the gasket between the bolts and align the meter flange with the pipeline flange, ensuring the gasket is centered. Note: Do not reuse old gaskets or use multiple gaskets, as this can cause leaks.
4. While holding the bolt heads in place, lubricate the bolts and then install the nuts, starting with the topmost ones. Initially, tighten the nuts by hand and verify that the gasket is correctly positioned.
5. Once all nuts are hand-tight, tighten them in the specific sequence using a correctly sized ring spanner.