CO2 Solenoid Valve 24V

This 24V normally-closed solenoid valve provides automated CO2 on/off control for planted aquarium CO2 systems. Operating at 24V AC or DC, it is compatible with a wide range of CO2 regulators and timer sockets, offering a flexible solution for hobbyists whose existing timer or pH controller outputs 24V. The valve installs inline on the CO2 tubing and opens when energised, allowing CO2 flow during the photoperiod, and closes automatically when the timer cuts power at lights-out. The normally-closed fail-safe default state ensures CO2 injection halts if there is a power outage, preventing uncontrolled gas discharge. Barbed inlet and outlet fittings suit standard 4mm CO2-resistant tubing.