Walker 40000 Universal Universal Exhaust Flex Pipe Flex Tube-Galv.-1" Dia.-25' Lgth.

Reviewing Walker (40000) 1" Diameter - 25' Galvanized Flex Tube.I don't like running my generator exposed to the weather. We occasionally get over 3 feet of snow. We have been without power for a week after a manor winter storm. After seeing "How to extend your generator's exhaust" articles on the internet, I thought I would try this flexible exhaust tube. Earlier reviewers said the tube is coated in oil that smokes the first time you use it. And smoke it does.Photo 1: Tube doesn't blink at 1102 degrees F. It almost glows red.Photo 2: After it cools, the tube turns gun metal blue. Look closely at the tube lying on the asphalt to see the smoke from the oil burning off. The smoke is not exhaust, but hot oil. Keep a fire extinguisher handy.Photo 3: Generator exhaust at end of 25 feet.I ran the generator for only 15 minutes for this test. At over 1000 degrees, the hot tubing could have easily started a house or forest fire.Some people have suggested using silicone tubing which decomposes at about 500 degrees into possibly toxic and flammable byproducts. Good luck with that.This is professional grade exhaust tubing that performs well and withstands hot exhaust.

Works great for getting exhaust fumes away from portable generators. 1 inch threaded Steel pipe fits perfectly to the inside diameter.

Worked fine to get rid of my gophers. Cut 8 feet off, connected to mower's exhaust.Then find gopher's tunnel, put hose in tunnel, cover with dirt, then run mower for about 5 minutes.Next day no more gopher.Fits 3/4 in pipe perfectly. Most small engine exhaust is 1/2 in pipe, need adapter to 3/4 inch pipe.I have enough left over hose for the neighbors.

These have a protective coat of oil that have to be burned off - so allow for at least half an hour of smoke time as it does so, where you have it outdoors or door-open with a fan.The tube is FAR HEAVIER DUTY than the original diesel heater exhaust, and the diameter is a true inch - which is slightly larger. Fortunately the original pipe can be tapped or turned into it.So to install, CUT YOUR ORIGINAL IN HALF. Tap those into each end of your cut to length of the new pipe. There is plenty of length and it is tight enough to make this a leak-proof connection - which you can verify with just a blow test. Your muffler will then slip over the end, and the original pipe will bend tight enough to make the turn into the exhaust port without issue.

Great Flexible Exhaust Pipe. It does rust in open weather conditions which implies low low grade stainless steel, but it acomplishes it goal as a flexible exhaust pipe. And for the price point (under $50) the rusting is acceptable. I probrably could have sprayed it with some corrosion inhibitor but was not sure if there were any heat compatible corrosion inhibitors available.

Very well made, sturdy. Clamp that order page recommends does not shrink down far enough on my generator exhaust. I made a "shim" out of stainless hose clamp and it works great. Bends to 11" radius. 1.125 OD. 1.0 ID.

The product is okay but the listing is misleading. It is definitely not stainless steel as mentioned in the listing, as it completely flunks the magnet test. It may have some stainless steel, but certainly not enough to call it stainless steel nor, to keep it from rusting. But for the price it's not too bad. In addition they have the dimensions listed as 26x2x2 inches. That's about the size of the box it comes in. If you are wondering how long it is, it's about 22 feet long and is 1" inside diameter. Watch out for the ends they are very sharp.

Took an old Briggs and Stratton engine that had the standard 3/4" NPT exhaust. Got a 3/4" black iron nipple. Screwed that into the engine. This pipe fits right over the 3/4" nipple threads. Quick buzz of the MIG welder. Now when the gophers start burrowing in the back yard I slip this exhaust down there hole and kick a little dirt over it. Start the engine up and leave the choke on as far as it will go and still run smooth. After a couple of goes at it I must have finally hit the den. They quit burrowing in my yard and my neighbor's yard. Beats any of the store bought gopher control measures.