ABS LZM-6 100-1000ml/min Oxygen Air Gas Flowmeter with Control Valve for Oxygen Adjustable

👍

Works great - using two of these on the outputs of an eheim 200 air pump

This is a solid air flow gauge for low flow rates. The control non works perfectly from off to over 1000 ml/min. I found no problems with it.

The flow meter is supposed to operate between 100 and 1000 mL/min. However, the needle valve only controls the flow between 200 and 300 mL/min. If you try to adjust the flow above 300 mL/min, it jumps to the maximum 1000 mL/min. The needle valve can't really control the flow and seems to be poor quality.