CO2 Regulator 7077/3 – TUNZE

The CO2 Regulator 7077/3 is a precision device designed to ensure stable and secure control of carbon dioxide cylinder pressure in aquaristics installations. It allows both the visualization of the internal pressure of the cylinder and fine adjustment of the working pressure, while ensuring optimal safety thanks to its integrated pressure relief valve.

Key Points

• For standard CO2 cylinders (DIN 477 threading or CGA 320 for US version)
• Precise adjustment of the working pressure via micrometric screw
• Dual gauge: cylinder pressure and outlet pressure
• Integrated safety valve (automatic discharge at 3.3 bars)
• Tool-free mounting via coupling nut
• German manufacturing – TUNZE quality and reliability

Technical Specifications

Main Functions

• Precise visual control: two gauges separately display the cylinder pressure and the working pressure.
• Fine regulation: the micrometric screw allows stable dosing, ideal for CO2 systems with bubble counter or pH controller.
• Integrated safety valve: prevents any overpressure during an obstruction or downstream closure.
• Quick mounting: the regulator easily attaches without a wrench, ensuring immediate and reliable operation.

Installation

• Install the regulator vertically on the CO2 cylinder
• Ensure the gasket is clean and dry before installation
• Set the pressure screw (K) to zero before opening the valve
• Connect the CO2 outlet to the fine adjustment screw (L)

Usage

Set the working pressure to about 0.5 bar for standard use (e.g., with the TUNZE 7074/2 controller). The maximum setting is 2 bars for safety. In case of overpressure, the safety valve automatically triggers at 3.3 bars.

Maintenance

• Regularly check the seal of connections and hoses
• Replace the sealing gasket with each cylinder change or if worn
• Prevent any water infiltration into the system

Spare Parts

• 7077.310 – Gasket for CO2 cylinder (EU version)
• 7077.310_A – Gasket for CO2 cylinder (US version)

Advantages

• Stable and precise CO2 dosing
• Reliability and durability of German manufacturing
• Compatible with most CO2 systems on the market
• Quick installation without tools

Box Contents

• CO2 Regulator 7077/3
• Integrated dual gauge
• Safety valve
• Coupling nut with sealing gasket
• Multilingual user manual