Hobby Metallic Air Valve 4/6 – 4-Way Connector

This Hobby 4-way connector for 4/6mm airline tubing splits the air from one pump into several lines. It lets you run multiple airstones, diffusers or air-driven filters from a single pump, and makes a practical spare part for DIY aquarium air setups.

Key features of the Hobby Metallic Air Valve 4/6

• 4-way air connector
• Fits 4/6mm airline
• Runs several outlets from one pump
• Practical spare part

Valve or 4-way connector

Two versions are listed: the single metal air valve, which controls the air going down one line, and the 4-way connector, which splits one air supply into four outlets. Both suit standard 4/6mm airline, meaning 4mm inside and 6mm outside diameter. Used together, the connector divides the air and a valve on each line lets you fine-tune the bubbles to each air stone or sponge filter. If you run fewer devices than outlets, cap or valve off the spare outlet, otherwise most of the air escapes there. Keep the fittings above the waterline and use a non-return valve between pump and tank.

Good to know

Use air valves on each line to balance the air flow between the outlets.

Hobby Metallic Air Valve 4/6 specifications

• Brand: Hobby
• Product: Hobby Metallic Air Valve 4/6 – 4-Way Connector
• Variant: 4-Way Connector
• Category: Fish Cleaning & Maintenance