High-Power Oxygen Pump Stop Valve 4mm Water Stop Valve Aquarium Air Pump One-Way Valve to Prevent Water Overflow

Working principle---When the position of the air pump is lower than the water surface, in order to prevent the backflow of water from damaging the front end of the air pump or other product equipment, the air pump can be placed higher than the water surface or lower than the water surface after adding a stop valve.
One-way non-return air pump accessories---The air pump has no danger of pouring water when it is cut off and stops working, and it is the little guard of the air supply facility. The air pump is very easy to operate and use, preventing water from entering the pump
Package Contents---20pcs x Air Check Valve. Protects your air pump by preventing aquarium water from back-siphoning during power outages.
Working principle---Used as an oxygen booster pump, due to the pressure difference between the inside and outside when it suddenly stops working, the water flow is reversed, the oxygen booster pump is damaged, and the water in the cylinder overflows and causes property damage. It is an indispensable accessory for the air pump to prevent the water in the fish tank from flowing back into the air pump and to burn the air pump to avoid danger.
Aquarium Check Valve---The check valve is suitable for ordinary aquarium air pump. One-way check valve for aquariums and fish tanks. Made of high quality plastic material, it is strong and durable and has a long service life.

Colour:As shown
Material:plastic
Size:4mm

Package Contents:
20 x check valve

Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

About Us
We provide the good product with the best price,we support Wholesale/Drop Shipping Order
1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it.
2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.

About Shipments
1.We will send out the orders ASAP once your payment is completed normally.
2.Please write your complete delivery address with correct phone number and zip code, especially please confirm your full name.

About After-sale Service
We are reliable seller and we have our professional after-sale service for all of our customs. If there is any question about the order,please contact us in advance ,we will always here until you get a happy answer.

About Feedback
1. Please check the package and item when you get carefully to make sure there is no problem.
2. If you have any problem or are not entirely satisfied with your package,please don’t be hesitate to contact us first before leaving negative feedback. We will resolve the problem to satisfy you.
3. If there is no problem, please leave us five star positive feedback.
Your affirmation is our greatest motivation ! !