Tomtop Jms Black 20Pcs Plastic Water Check Valve Stop Valves For Aquarium Fish Tank Air Pump
TOMTOP JMS
20Pcs Plastic Water Check Valve Stop Valves for Aquarium Fish Tank Air Pump Black.Features: 1.Made of high quality plastic material, good stability and durability. 2.The water flow is reversed due to inside and outside pressure difference when oxygen filling pump is suddenly stopped, and the oxygen-filled pump is damaged and the water in the cylinder overflows. Prevent the water in the fish tank from flowing back into the air pump and burn the air pump. 3.Prevent water backflow from damaging the
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