B - High pressure / CO2 cylinder pressure gauge (displays the amount of CO2 in your cylinder). Please note, for most of the time pressure will be at level of 700-900PSI as CO2 is in liquid state. When gauge will start to drop, that means liquid gas has evaporated and you have from couple hours to couple of days left to change the cylinder (depending on your bubble rate).
C - Low pressure / working pressure gauge
D - Solenoid's valve main block.
E - Bubble counter with integrated check valve
F - Gas flow (bubble rate) adjustment, high precision integrated needle valve
G - Low power 12VDC solenoid's electric coil
H - Safety relief valve. With easy pull down relief ring. To release gas from the regulator, just pull ring down. This is very useful, when dialling working pressure down. Instead of waiting for gas to escape via needle valve, pull down ring for few seconds and gas will escape from the 2nd stage
I - Working pressure adjustment knob
Step 1 | Washer Installation
Place washer between CO2 cylinder outlet and regulator's stem (inside regulator's nut)
New CGA320 stem has a Black O-Ring, so no washer is required.
Step 2 | Tighten the regulator
Tighten the regulator to your CO2 cylinder using a spanner or wrench
Step 3 | Bubble counter installation
A - Remove top cap and fill bubble counter with water*
B - Feed tubing through the collar and install cap back onto the bubble counter