This report originally filed under mfg report num 1610287-2022-00063.All future reports will be submitted under mfg report num reflected in this report.The regulator was not returned for evaluation.A review of the batch production record for lot: 131411 showed no unusual manufacturing issues.A review of the complaint records showed no other complaints against lot: 131411.A review of confirmed complaints for regulators with low or no flow showed 27 complaints since the beginning of 2015 (151-04, 16b-08, 16e-06, 17h-07, 17j-03, 17j-10, 17k-13, 17l-06, 18a-09, 18c-02, 18f-01, 18f-16, 18h-02, 19b-01, 19c-17, 19d-04, 19e-06, 19f-08, 19h-01, 19h-02, 191-06, 19k-05, 20f-04, 201-08, 20j-04, 20j-12, and 21 g-13).The root cause cannot be determined conclusively.Manufacturer will continue to monitor data for evidence of adverse trending and take further action, as appropriate.The manufacturer internal reference number is: (b)(4).
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