Check the listing for details. Aquarium aquatic plant tank check valve CO2 carbon dioxide check valve I-577. Color: white, Condition: New. Listed at 11.44 USD. [commodity name] explosion proof check valve[overall dimension] height: 5.8cm × 2.2cm in diameter[product characteristics]1. Stainless steel spring is adopted, with good check effect.2. Low resistance design, suitable for air motor and CO2 system.3. Beautiful appearance, combined design, removable and washable.4. It has air duct locking function to prevent pipe explosion.[usage]Remove the locking nut and insert the nut into the air pipe. Confirm the air inlet and outlet direction and plug in the air pipe. Tighten the lock nut.[precautions]·Please keep it properly to prevent children from swallowing it by mistake.·It is recommended to connect between the air head of the air pump or between the aquatic plant meter and the carbon dioxide refiner.[commodity weight] 120gQuantity: 1pcs