Aquarium CO2 Regulator, W21.8 Upper Opening Mini CO2 Pressure Gauge with Check Valve for Fish Tank Carbon Dioxide System

• 【Premium Material】: Made from high-quality aluminum alloy and crafted using CNC machining, with an anodized surface that offers excellent corrosion resistance. The aquarium CO2 regulator is designed to fit the W21.8 threaded interface.
• 【Clear Display】: Features a compact dual-gauge design to clearly monitor the pressure and flow of gas inside the bottle and at the outlet, enabling quick readings and precise control.
• 【Precision Pressure Adjustment】: Equipped with a high-accuracy pressure regulator and fine-tuning knob, allowing precise regulation of CO2 flow to support plant growth and stable aquatic environments.
• 【Backflow-proof & Leak-proof】: Includes a check valve to stop water from flowing back into the CO2 cylinder, protecting the system from damage, while premium gaskets will a tight, leak-proof seal at all connections.
• 【Quick Installation】: Boasts a quick-connect interface for quick setup, making it simple to connect with air tubing, solenoid valves, bubble counters (optional), and other accessories, greatly enhancing convenience.

Features: 1.【Premium Material】: Made from high-quality aluminum alloy and crafted using CNC machining, with an anodized surface that offers excellent corrosion resistance. The aquarium CO2 regulator is designed to fit the W21.8 threaded interface. 2.【Clear Display】: Features a compact dual-gauge design to clearly monitor the pressure and flow of gas inside the bottle and at the outlet, enabling quick readings and precise control. 3.【Precision Pressure Adjustment】: Equipped with a high-accuracy pressure regulator and fine-tuning knob, allowing precise regulation of CO2 flow to support plant growth. 4.【Backflow-proof & Leak-proof】: Includes a check valve to stop water from flowing back into the CO2 cylinder, protecting the system from damage, while premium gaskets will a tight, leak-proof seal at all connections. 5.【Quick Installation】: Boasts a quick-connect interface for quick setup, making it simple to connect with air tubing, solenoid valves, bubble counters (optional), and other accessories, greatly enhancing convenience. Specification: Color: Dark Gray Material: Aluminum Alloy Outlet Pressure: 0.3 Mpa Working Pressure: 15 MPa Interface Specification: W21.8 Size: 7 cm (2.8 inches) in height (excluding CO2 bubble cap), CO2 bubble cap 8.6 cm (3.4 inches) in height Air Inlet and Outlet Diameter: 6 mm Packing List: 1 * Aquarium CO2 Regulator (You can choose to purchase a set that includes a bubble counter) Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We will the mode is the same as shown in the pictures. 2. Please allow 1-2cm slight dimension difference due to different manual measurement.