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Brass Adapter (on One Way Valve): 1/4 inch NPT-O2

Emergency Valve Outlet: 9/16 -18 inch UNF 2A (USA “standard scuba”)

Small LP Ports 3/8 inch-24 UNF 2B

Large LP Ports 1/2 inch -20 UNF 2A

Kirby Morgan does not handle used equipment, condemned helmets and/or mask frames. We are strictly a production facility and advise that you contact our authorized dealers if you are looking to buy or sell new or used equipment.  If you have had a unit stolen and need a value for insurance purposes, we (or your dealer) will be happy to provide you with the current retail price to serve as a replacement value.  If you are able to provide us with the serial number we will be happy to give you the age of any unit. However, despite the age, condition can vary greatly from unit to unit depending on usage & maintenance history. For these reasons it is impossible for us to appraise the value of a unit from a serial number or a photo. Proceed with caution on any used gear purchases. If you are able to, have the used equipment inspected by certified, factory trained personnel (most Kirby Morgan dealers) prior to purchase. Most importantly, if bought used, always have your life support equipment inspected as described above before use!  Our website Dealers page will show all KM dealers and include information as to whether or not they are a factory certified inspection & maintenance facility.