Adjustable inline airline flow regulator valve for 4mm airline tubing.

Running multiple culture vessels or filtration lines from a single air pump requires a way to control the airflow going to each line independently. Without flow regulation, output distributes unevenly across the system, which affects aeration in phytoplankton cultures, rotifer vessels, sponge filters, and brine shrimp hatching setups where consistent, dialled-in airflow matters for culture health and performance.

These inline airline flow regulator valves install directly into standard 4mm internal diameter airline tubing and provide smooth, precise turn-control adjustment of airflow on each line without disconnecting the system. Overall length is 38mm with a 25mm height profile, making them compact enough for tight multi-line setups. Supplied as a 2 pack, they are a practical addition to any culture equipment setup or air-driven aquarium system requiring individual line control.

Compatible with sponge filters, air stones, protein skimmers, and live culture vessels throughout the Reefphyto equipment range.

If you have questions about setting up a culture system or air distribution for multiple vessels, contact us directly and we are happy to help.