# SPG
Squivel Spool
O rings 003


# First Stage
O ring 014
Depressurize to 900 psi (third of a tank) and open the 


# second stage
Ventouri effect



# Tanks
Steel vs Aluminum 
Eddy current test for main thread
Markings on the tank


# Save a Dive Kit
![[Pasted image 20240530153006.png]]