PRODUCT APPLICATIONSPlastic one way non-return check valve suits most aquariums, fish tank scenes, and fishing tackle shops, especially those equipped with 3/16" air tubes. It can also be used in oxygen pumps to prevent water back-suction.PRODUCT DETAILS & INCLUDE√ Material: PVC√ Color: Clear Red√ Overall Size: 50 x 14 mm / 1.97" x 0.55"(L x W)√ Air Hole Diameter: 4.5 mm/0.18"√ Applicable Pipe Size: 3/16"√ Package Includes：10-Pack x One Way Air ValvePRODUCT ADVANTAGES1. Our air tube check valve for aquarium air pump is made of PVC, which is durable and not easy to break. With corrosion-resistant silicone, soft and wear-resistant and can ensure long-term use. Its design can be tightly connected to the hose without air leaking, and it will not make noise during long-term use.2.
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