10pcs Plastic One Way Air Pump Check Valves Nonreturn Aquarium Fish Tank Accesso

Description

Maxmoral 10PCS Plastic One Way Air Pump Check Valves Non-Return Aquarium Fish Accessories,Unscrew and Open Check Valve Manually(Black)
Made of high quality Plastic material,durable,easy to aging,ensure long service life.
Easy to use,detachable design makes it easier to unscrew, clean and repair.
Put in the airline tube between air pump and aquarium water to prevent water from returning down the air line.
Air Hole Diameter: 4mm/0.16inch.Overall Size:4.3x1.5cm/1.7x0.6inch(LxD).
NOTE:Before installation,you may need to unscrew and open up check valve, pinch the rubber boot inside valve to make sure small slit is open. Otherwise no air to .
Specification: Material:Plastic Color:Black Air Hole Diameter: 4mm/0.16",Overall Size: 4.3 x 1.5cm/ 1.7x 0.6"(Lx D), Features: Effectively prevent water from flowing down the air pipe and counter-current air inlet pipe when the oxygen pump is turned off, thereby damaging the oxygen pump. It can also happen from time to time during an emergency power failure. When the machine is restarted, the oxygen pump may have failed due to flooding. The device can completely prevent such accidents. Unscrew and open up check valve, pinch the rubber boot inside valve to make sure small slit is open. Otherwise no air to . Package included: 10pcs Aquarium air pump check valves Attention: Please DO use them with CO2 system.
SHIPPING
Domestic Buyers
- We ship within 3 business days of payment, usually sooner
- We offer FREE shipping on all orders!
- We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed
- We have confidence in our products, but if you are not fully satisfied please contact us within 30 days of purchase and you will get full refund.
International buyers
– please note: Import duties, taxes, and charges aren't included in the item price or postage cost. These charges are the buyer's responsibility.
- Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
*  Order Cancellation Policy **
You can return a product for up to 30 days from the date you purchased it.
1. The seller reserves the right to cancel the special case only due to eBay cancellation fee.
2. The decision of seller is the final.
3. The seller will respond to the cancellation request within 2 business days. Please wait for the result of cancellation.
4. In case the cancellation is not completed by some reasons, the buyer can follow the options below to get the refund.
4.1 The buyer can reject the item when it arrives.
4.2 The buyer can send the item back to the seller within 30 days If the buyer receives item (USA Shipment ONLY). The seller will provide the FREE return label to the buyer when the buyer opens " Return Item" case on eBay by using the reason as "Change my mind" ONLY.
5. When buyer has placed the order. The order will be processed and completed by automatic warehouse system within 5 minutes. In case that buyer sends the cancellation request after 5 minutes of placing the order, the request will be rejected.
**Sending direct message to cancel the order is not allowed for every case.*