CO2 Regulator with needle valve, solenoid valve, and bubble counter. Dual gage regulator displays output pressure and bottle pressure. Standard American CO2 bottle connection. 
DESCRIPTION:
The Milwaukee MA957 is a complete and high quality solution for automatically injecting CO2 gas into your aqautic system. This CO2 Regulator System can be used with the following; 
- the Milwaukee SMS122 pH Controller 
- the Hanna HI981411 pH Mini Controller 
- FlexPLC System Controller 
- Windows PC Based Aquatic Monitoring And Control System(AMACS) 
Each of these systems can automatically control the Injection of CO2 based on either pre-defined timed sequences or by a rise in the pH Level.