Special installation and maintenance
instructions for polymer bodied meters
In addition to the instructions given in this document, special
consideration is required when installing and maintaining polymer
bodied meters.
1. The meter installation site should be protected from frost, direct sunlight
and away from heat sources.
2. The installation type and position should minimise the risk of chemical
contamination through flooding or soil contact, or by run-off from
adjacent surfaces or fittings.
3. Care must be taken to ensure that any chemicals used during the
installation process, such as cleaning fluids or jointing fluxes, are not
permitted to come into contact with the meter.
4. It is essential that stresses due to poor installation methods should not
act across the meter body. Ensure the correct gap is provided in the
pipework to fit the meter length. Ensure the upstream and downstream
pipe connectors are aligned and sealing faces are parallel. Ensure
upstream and downstream pipework is firmly anchored.
5. Polymer pipe connection pieces should be used. If brass connection
pieces have to be used, they should be of a dezincification resistant
(DZR) grade.
6. Only the provided connector seals should be used. The use of PTFE tape
or sealing fluids may damage the meter.
7. For V110 and V200 polymer meters it is important that the foam
washers, provided at the end of both connection threads, remain in
place after installation.
8. The pipe connectors should be carefully threaded onto the meter by
hand to avoid cross threading. The final tightening with a spanner
should not exceed 20Nm, avoiding damage to, or loading across the
meter body.