10 Pack 1/4 inch Plastic Check Valve, One Way Barb Hose Inline Non Return For Fuel, Oil, Water, Air (1/4 inch)

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.

I used 1 on a Honda generator and it worked fine dealer wanted $30 for 1, I still have 9 left over lol.

As descibed

Thank goodness! Buying these from the spraygun vendor is stupidly expensive. These are the same as they sell for a fraction of the price.

I tried two of these. They work correctly at first, but after a few minutes both of them stopped flowing and could not be unstuck. Throwing the rest of the bag away.

Been good and holding great under the hood for my wiper fluid system. Also great for holding in fuel on the lawnmower.

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.

Just what I needed