Bulletin # 07 of 2011 7 of 2011 October 4, 2011 Products Affected KM 47 Helmets 500-070/071, KM 77 Helmets 500-090/091, 505-278, 505-736, 525-377, 525-368 Bulletin_7_2011_Change_To_Product_Exhaust_Valve_Rex_Regulator_Low.pdf
Kirby Morgan® 47 The Kirby Morgan 47 features the high performance, all stainless steel REX regulator.
Kirby Morgan® 77 Kirby Morgan 77 features the all stainless steel REX regulator, as well as a stainless sideblock, helmet ring, handle, and other key components.
Bulletin #11 of 2020 11 of 2020 October 14, 2020 Products Affected Kirby Morgan 47 Helmets P/N 500-070 and 500-071 Bulletin #11 of 2020
Regulator Rebuild Kit, KM 47 and 77 525-310 Regulator Rebuild Kit, KM 47 and 77 525-310_Regulator_Rebuild_Kit_KM-47_KM-77.pdf
Conversion Kit, 455 Regulator for KM 77 525-769 Conversion Kit, 455 Regulator for KM 77 100-204-455-balanced-regulator-installation-guide-525-769-250319001 .pdf
REX 47/77 Regulator Assembly Kit 525-774 REX 47/77 Regulator Assembly Kit 525-774-REX-47-77-Regulator-Assembly-Kit.pdf
Bulletin # 04 of 2009 4 of 2009 June 25, 2009 Products Affected P/N 530-808 Kirby_Morgan_Bulletin_4_Of_2009_New_Kit_525-770_Pull_Strap.pdf