10 PCS Inline Check Valves for Fish Tank Air Pump, Interface: 4mm, 4mm
4mm
$8.00
Sale price
$8.00
Regular price
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1. Prevents water backflow via the pipe to damage air pump
2. 1 check valve for 1 air outlet
3. Good for air pump operating below the fish tank's top
10 PCS Inline Check Valves for Fish Tank Air Pump, Interface: 4mm, 4mm
$8.00
Sale price
$8.00
Regular price
2. 1 check valve for 1 air outlet
3. Good for air pump operating below the fish tank's top