Neptune TRU/FLO, Installation And Maintenance Manual

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Appendix C
TRU/FLO Compound Meter Installation and Maintenance Guide 39
3 Make sure the o-ring inside the main valve assembly is in good
condition and does not have any nicks or cuts. See Figure 57.
4 Replace the o-ring if needed.
Figure 57 O-ring
5 After checking the retainer ring, the o-ring, and the integrity of the
main valve, the parts can be reinstalled. See Figure 58.
Figure 58 Reinstalling the Parts
6 Reinstall the retainer ring on the main valve and tighten the four
screws. See Figure 59.
Figure 59 Secure Retainer Ring
If the o-ring is damaged, a failed low flow test could result.