C - 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).
D - Low pressure / working pressure gauge
E - Bubble counter with integrated check valve
F - Gas flow (bubble rate) adjustments precision needle valve
G - Solenoid valve compatible with most pH controllers and electric timers
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*