Replacement Water Stop Check Valve For Aquarium Feature:1. Replacement: This one-way check valve can be used for a damaged check valve and fits perfectly to prevent gas or liquid from flowing back2. Strong pressure resistance: the alloy check valve has sufficient bearing capacity and rigidity to meet the actual requirements of use within the relevant range3. High efficiency: the check valve has good thermal performance, strong chemical stability, non-toxic and odorless4. Excellent PP Plastic: The alloy check valve is made of PP plastic, which is abrasion-resistant and 5. Application: This one-way check valve is widely used for aquarium, food and beverage, medical equipment, chemical industry, etc. Specification:Item Type: Check Valve Material: PPFonction: connect hose to prevent gas or liquid from backflow Scope of Application: Aquarium, Food & Beverage, Medical Equipment, Chemical Industry Size: About 4mm/0.2 inch Package List:10 x Check Valve 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.