|The Kirby Morgan Commercial Diver’s Helmet 77 is a new stainless steel metal commercial dive helmet with a rugged outer shell. The Kirby Morgan Commercial Diver’s Helmet 77 features an all stainless version of the Kirby Morgan REX® regulator, as well as a stainless steel sideblock, helmet ring, bent tube, handle, and other key components. The Kirby Morgan Rex Quad Valve® Exhaust System is standard on this commercial diving helmet.
The advanced regulator pod on the Kirby Morgan Commercial Diving Helmet 77 will allow future versions of the Kirby Morgan Commercial Diving Helmet 77 to be outfitted with other Kirby Morgan regulators, including the Kirby Morgan SuperFlow 350 regulator or the all stainless steel Kirby Morgan SuperFlow 450 regulator. The pod makes it possible to customize the Kirby Morgan Commercial Diving Helmet 77 with the diving regulator you want as job requirements change. The Kirby Morgan Commercial Diving Helmet 77 does not require any refinishing if the surface is scratched or gouged, only comes in one color, and it eliminates threaded inserts for securing port retainer to helmet shell.
Warning: Before attempting any diving in any type of contaminated water, a complete commercial diving and topside course in hazardous materials emergencies should be completed. The commercial divers and the topside team must be properly trained and have the proper safety equipment. All commercial diving helmets and suits can leak water under certain conditions. Commercial divers should use extreme caution when diving in contaminated waters.
|The Kirby Morgan Commercial Diving Helmet 77 has been tested and conforms to the performance requirements as set forth in Annex II of Directive 89/686/EEC and, as far as applicable, the EN 250:2000, EN 250/A1:2006 and EN 15333-1:2008 (class B). The Kirby Morgan Commercial Diving Helmet 77 is fully CE marked with demand valve REX.
The minimum operating temperature recommended for the Kirby Morgan Commercial Diving Helmet 77 is 37 degrees F, only in regards to regulator performance. At the time of this writing, no hot water shroud is available for the Kirby Morgan Commercial Diving Helmet 77 for heating the commercial diver’s breathing gas.
Without a Kirby Morgan Hot Water Shroud, the commercial diver may be subject to hypothermia due to cold gas inspiration temperatures. Kirby Morgan makes no physiological recommendations regarding minimum safe operating temperatures for commercial divers using the Kirby Morgan Commercial Diving Helmet 77.
Usually the greatest danger of demand regulator icing will be encountered on deck when the surrounding air temperature is less than 32°F (0°C). This effect is primarily due to the refrigeration effect of breathing air pressure reduction, and the addition of moisture from the divers exhalation coming in contact with the topside air temperature.
Recommended overbottom (OB) gas supply pressure for best performance at depths are calculated by the formula (fsw x 0.445+14.7) + recommended p.s.i.g.