Rigbone Setup
Building a Nitrogen SCBA in the U.S.
This post will focus on the parts of my setup that are U.S. specific, or where I had a deviation of any kind from GasMonkey's setup, which I used as the basis for my setup.
Most of the information I got from either
this thread or the "
Exit bag and inert gas megathread".
Many thank to
@tearsinrain for past posts and for their answers to my questions.
Parts
Nitrogen cylinder
80 cubic feet
This is over 2000 liters of Nitrogen. Perhaps overkill but I wanted to play it safe.
Water volume: 942 Cubic Inches - 15.4 ltrs
2200 psi
Dräger PAS Lite – 2216 PSI - PN 4046190
My vendor confirmed with Draeger that this model of PAS Lite uses
positive-pressure.
Western Enterprises#830, PKGD: Adaptor CGA-580-346
This adapter has a male CGA-580 to plug into the tank, and a male CGA-346 to plug into the PAS Lite.
Dräger FPS 7000 P EPDM Mask - PN : (Small) R56249 ; (Medium) R56200 ; (Large) R56300
I ordered the large size (R56300)
The LDV on the PAS Lite plugs into this facemask
Dräger 30-minute 2216 PSI Aluminum - PN 4054856 (OPTIONAL)
This is an air cylinder that I plan on using for exit rehearsal.
Male CGA-346 connector
The PAS Lite connects to this tank directly (no adapter) as the pank and the PAS Lite both use CGA-346 connectors
Tools
- 1 1/8 in. wrench
- Used to secure the CGA-580 connection between the adapter and the cylinder.
Photos
All parts shown in front view. (4054856 - air tank not shown).
View attachment 138411
Cylinder connection (female CGA-580)
View attachment 138409
Western Enterprises#830, PKGD: Adaptor CGA-580-346
View attachment 138412
Cylinder, CGA-580/CGA-346, and 1st stage regulator of PAS Lite assembled.
View attachment 138413
Second stage regulator of PAS Lite (LDV) connected to Facemask (PN: R56300)
View attachment 138414
Pressure gauge coming from the 1st stage of PAS Lite
View attachment 138415