Kirby Morgan BandMask KMB 28

455 Balanced Regulator- Sets a milestone in surface supplied breathing performance. The 455 regulator body is made of 316 stainless steel, as are all its other metallic components.
SuperFlow® 350 Regulator - This all metal, fully adjustable, Commercial Rated™ demand regulator provides easy breathing. Both the 455 & 350 provide excellent performance with low pressure compressors.
Air Train - The air train diffuses incoming breathing air/gas onto the face port/lens to defog and ventilate.
Communications - Communications are “non-modular” (like the SuperLite 17B helmet). When ordered with male waterproof connector (for 4 wire communications), the mask also includes bare wire posts. When ordered with bare wire posts (for 2 wire communications), the port for the mwp connector is plugged.
Defogging Steady Flow Valve - Provides an additional flow of gas into the helmet for ventilation and defogging.
Emergency (EGS) Valve - Supplies backup breathing gas to the diver.
Gas Supply Non-Return Valve - Gas Supply Non-Return Valve prevents loss of gas pressure in the event of umbilical damage, preventing a "squeeze".
Head Harness (Spider) - Keeps the mask in place on the divers head. The neoprene rubber spider has adjustment holes for varying the tension of the harness.
Nose Block - Device allows the diver to block the nose to equalize ears.
Side Block - Multi use side block has additional ports built in to provide controlled air flow, if needed.
Silicone Oral Nasal Mask - Made of a superior silicone material which is hypo-allergenic and has a longer work life than latex.
Stainless Steel Bands - Bands hold the Hood/Face seal in place on the mask frame. They also provide the mounting studs for the Head Harness (Spider).
Whisker Wings - Retrofits to many previous Kirby Morgan Helmets and BandMasks®, has less breathing resistance than the older single valve exhaust while providing an extremely dry hat. The Tri-Valve® Exhaust is made of a chemical resistant compound.

Weight - 12.73 lbs
Mask Frame - Xenoy thermoplastic
Control Knobs - Polyurethane
Face Port/Lens - Scratch Resistant Polycarbonate
Hood - Neoprene
O-Rings - Buna-N
Recommended Lubricants - Christo-Lube®, Dow Corning® MS4 Silicone Lubricant. Krytox® and Halocarbon® are also acceptable.
Regulator - SuperFlow® 350 Performance. The SuperFlow® 350 regulator on the Kirby Morgan 18 & 28 masks offers high performance. The regulator has been tested at Dive Lab at Panama City, Florida. It meets all current U.S. Navy and European diving standards.
Cage Code - The cage code for identifying KMDSI products for U.S. government purposes is 58366.
CR Standards - These helmets meet or exceed all standards established by Dive Lab of Panama City, Florida, and are CR (Commercially Rated) marked.
Temperature Limitations - Use at water temperatures below 33 °F (1 °C) requires use of hot water shroud (P/N 525-100) and hot water.
Operational Specifications & Limitations - Umbilical minimum I.D. 3/8” (9.5 mm) of not more than two sections, total length not to exceed 600 feet (183m). This mask meets or exceeds all requirements of NPD, Health and Safety, (U.K.), United States Navy, ADCI United States and is CR rated by Dive Lab, Panama City, Fla., USA. 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.

KMB 28 Manual & BlowApart