19 Pieces Fuel Gas Can Vent Caps 8 Pieces Fuel Gas Tank Vent Caps Gas Can Replacement Vent Plug Metal Gas Jug Vent Caps with Drill, Wire, Wrench and Warning Stickers for Gas Fuel Can (Yellow)

Just what I needed.. but could be a little larger... as they are, they are the same ID as a regular tire valve stem.

So nice to have a working fuel jug. Should of done this years ago.

They work like they supposed to

nice little gezzmos

Works well. I used a small extendable magnet to get ahold of the wire. Then ran the wire through the hole of the valve made a loop and put the end back through the hole of the valve and then pull up through the hole I had drilled, it fits snug, so don't pull the wire any harder than necessary.

I previously had ordered a similar product that worked great, but the price had gone up significantly when I came to reorder some more. These were significantly less expensive. I didn't notice until I installed them in the fuel cans that they did not come with cap retainers. The retainers on the other product may not last forever, depending on how much solar exposure they get. However, mine are still fine. They are more convenient than having to keep track of a loose cap while pouring fuel. I know I have lost several tire valve caps (same thread and size as these), but how often do you see tire valve caps with a retaining loop? I decided the cost savings was worth it, particularly because the caps are extremely common and easy to replace if lost. Other than that, the quality is at least as good as the more expensive set, and I do recommend these, with the one caveat. You decide whether the extra money for the retainers is worth it, or not.

A few things to follow when installing.1. Never install the vent below the highest possible fill level of your can when it is sitting flat. This is a non-negotiable safety instruction. WHY: if at anytime down the road of time the valve started leaking it would leak all the gas down to the level of installation.2. Do not drill you hole on the curve of the can. Chances are this would leak. This has nothing to do with the quality of the product. You just can't fit and seal a flat stem on a curved surface.3. When drilling the hole find a flat space above maximum fill level, feed the dill slow and let it drill. This can help reduce the size of the bur that will be left on the inside of the drilled hole. I had to reach in and remove the large bur left by the drill with a pair of tweezers. If the bur is left then it may not seal because the o-ring will be sitting on the bur. There should be an o-ring on the inside and the outside.4. The unit can twist inside the hole when trying to tighten the nut. I used a pair of pliers and a rag to grip the threads while tightening the nut. Don't squeeze to hard or you will not damage the threads. Must be tight enough prevent leaking but not too tight.5. After installation I tested by turning can upside down. Neither one of two cans leaked.

I installed 8 air relief valves in 8 fuel cans. Put some fuel in tank with valves tight and the valce leaked at the o rings and at the cap. Purchase new neoprene washer gaskets and installed on the nut side of the installation and this stopped the leak at the tank. The silver caps were too deep and made metal to metal contact with the nut that holds the valve in the tank and this prevented the top of stem from seating to the gasket in the cap. One cap did not have a gasket in the cap and this was also a problem. Cut gasket material inserted and the lack of gasket was solved.Solved the problem with the length of the cap touching the nut and not sealing at the gasket in the stem by shorting the stem just a little and now I have cleanance so the gasket in the stem makes contact. I used a grinder to shorten the cap. I installed 8 of then air relief valves and when grinding one of the 8 caps i took too much off and the cap was no longer useable.I have a lot of fuel can and ordered a second set of 8 brass valves. I installed the neoprene washers as part of the installation. The brass washers and caps are designed differently when you order the Brass configuration. There was no contact issues between the nut on the shaft and the cap. The brass parts are better designed then the silver configuration.I recommend purchasing the Bass configuration. I recommend not purchasing the silver configuration - I think you will have issues with it. The o ring sealing approach is also questionable. out of 8 installations I had 3 containers that leaked at the o ring. I was careful with the hole drilling. I used two smaller drill bits to start the hole creation process to insure I had a nice clean an properly sized hole. Then I used the drill that came with vents to make the final hole. This approach was recommended in a video I watched on making this modification. In one of the installations the o ring was squeezing out of the washer. I was careful to not over torque the nut so I did not over tighten the o ring. The used of the flat neoprene washer prevents this distortion. The bottom line is that neoprene washer worked and the o ring did not.Purchase only the brass configuration of this product.