CO2 Tank & Regulator

The CO2 Tank & Regulator system provides essential infrastructure for managing atmospheric carbon dioxide levels in controlled agricultural environments, such as greenhouses and indoor grow facilities. This system centers on a high-pressure 50-pound capacity CO2 tank paired with a precise electronic regulator that enables automated delivery to enhance plant growth and maximize photosynthetic potential.

Arable Acres CO2 Tank - 50 Pound (25/Plt)
The Arable Acres 50-pound CO2 tank is a standard steel cylinder with a DOT 3AA certification, indicating compliance with U.S. Department of Transportation specifications for compressed gas storage. This cylinder features a CGA-320 outlet valve thread, the industry-standard connection for high-pressure carbon dioxide. Constructed from seamless steel and rated for a service pressure of 1,800 to 2,000 PSI, it is designed for repeated industrial use. The tank is delivered empty and must be filled by a certified gas supplier or welding supply company before first use. Refills are available from the same providers. For safety, full tanks should be stored upright in a secure, ventilated area and protected from heat sources, direct sunlight, and physical impacts.

CO2 Brass Tank Regulator w/ Solenoid Valve
This regulator is the control mechanism that reduces the high tank pressure to a usable working pressure for delivery into the growing space. The brass body provides corrosion resistance for long-term reliability. Its core function is the reduction of inlet pressures from the tank (up to 2,000 PSI) down to a consistent, adjustable outlet pressure, typically ranging from 0 to 100 PSI, via a control knob. The integrated solenoid valve is an electrically actuated on/off switch for the gas flow. This component is critical for automation, as it connects to an environmental controller. The controller sends a signal to open the solenoid, allowing CO2 to flow when levels drop below a set point, and closes it when the target concentration is reached. A built-in pressure gauge displays the high-pressure tank contents, while a second gauge indicates the downstream delivery pressure.

Application and Configuration for Agricultural Use
In a greenhouse, the primary application of CO2 enrichment is to increase growth rates and yields. Plants grown at elevated CO2 levels (often between 1,000 and 1,500 ppm) can exhibit more efficient photosynthesis, faster vegetative development, and improved flowering. The regulator is plumbed from the tank using a high-pressure hose or copper tubing. Its solenoid valve is connected via low-voltage wiring to a dedicated CO2 controller or a multi-zone environmental computer. This controller uses a separate wall-mounted CO2 sensor to monitor the room's atmosphere. The system's flow rate into the space is typically managed by a final component—a flow meter or needle valve installed downstream of the regulator—which allows for precise adjustment of cubic feet per hour (CFH) delivery. For safety, installations must include a high-pressure check valve on the tank outlet to prevent regulator failure and a properly sized ventilation system to ensure human safety.