10 Pack 1/8 inch Plastic Check Valve, One Way Barb Hose Inline Non Return For Fuel, Oil, Water, Air (1/8 inch)

I have 2 oxygen concentrators for night use, one in the next bed room one in the garage. I have tubing from both so if we have guests staying, I can run the one in the garage because of the noise. I used 2 of these small check valves in line will each concentrator, so I can just turn on the one in use, without changing the tubing around.

Siempre las pido para mi esposo son muy buenas y el las usa para su máquina de pintura

As descibed

They are cheap and look cheap but work great. I tried the first one and I saw air sucked in the line (hand soap). Tried the second one with same result and thought the quality of the seal was bad. Tested both with syringe and water and there was no leak with pressure. Turned out my tube was cracked and sucked in air, not the valves.

Used them for drip irrigation. They failed after I use, about 5 minutes of water flowing through them. I’m gonna guess they just can’t handle much pressure. And, if they can’t handle much pressure I have no idea what they’re good for.

great product, fast delivery

I ordered these to replace a true 1/4" valve. The edge of the barbs is barely 1/4", but it basically slips right out of a 1/4" line. You can see from the images the difference in size of this compared to a true 1/4" valve.

Great price. Working good