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Your cart is empty.The Quickun Inline Check Valve is a high-quality product designed to allow liquid or air flow in only one direction, preventing backward motion. This check valve, available in a pack of 2, features a size of 1/4" (6mm) and is made of durable materials such as PA66 for the shell, VITON for the diaphragm, and SUS316L for the spring. The material is resistant to fuel/oil, acid, alkaline solutions, and features good high temperature resistance and corrosion resistance. It is widely used in various industries including fuel pumps, engines, household appliances, agriculture equipment, beverage machinery, and ink supply systems. With its reliable construction and versatile applications, this check valve is a great choice for a variety of needs.
AJ Mahoney
August 29, 2025
What can you say about these check valves. They work well.
Dan
August 7, 2025
One way check valve, works.
Mr Fox
June 20, 2025
Did the job
Jorge V.
May 23, 2025
I needed these for a toilet fill valve. Unfortunately, the flow stops when it's high pressure. It only works with low pressure applications.
mike
May 19, 2025
Prompt delivery. Just as advertised. Perfect.
Tim McCain
May 12, 2025
Flimsy and unusable, waste of time and money!
John Ewald
March 8, 2025
Worked great when used with 7mm silicone tube. They might be a little stuck when you get them but I just blew through mine and it loosened them up. Blocks both air and water from flowing back. Great little check valve.
CJ
December 5, 2024
Works Great. Easy install
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