Spears 460 Series PVC Pipe Fitting, Adapter, Schedule 40, White, 1-1/2"Barbed x 1-1/2" Spigot

Excellent 1" (and 3/4") slip spigot-to-barb fittings for PVC to poly pipe! You *can't* find these in big box stores it seems, only here at Amazon. There seems to be quite a bit of confusion in the comments about how a slip (meaning glued connection, vs. threaded) spigot works vs. a slip socket and how the sizing of barbs work. Please see the photos I've made to help understand. A 1 inch "SPIGOT" PVC barb does NOT fit directly on PVC pipe, it goes into a PVC socket, such as on the 1" threaded-to-socket PVC adapter (or into a 1" PVC T fitting, or into a 1" PVC elbow fitting, or into a 1" PVC coupler fitting), as in my photos. A 1" SOCKET PVC barb does fit directly on the pipe. As for PVC barbs themselves, there is a bit of a necessary trick involved. The barb will always be a bit smaller inner diameter than the pipe end. For example, a PVC socket barb that fits right on 1" schedule 40 PVC [which is 1" ID (inner) and 1-5/16" OD (outer)] might measure only around 3/4 ID or so inner on the barb end. This is normal! That is how barbs work. That difference in diameters is what makes the molded barbs happen. Does it matter? So little that it would even be hard to measure with instruments for just the length of the barb, *because the water flow rate through the narrower barb increases to compensate*. Where the diameter difference would start to matter is long lengths of pipe narrowing down to 3/4 ID from 1" ID. Then the liquid friction against the wall would start to matter. If you really, absolutely, need 1" ID through a system that will have barbs, you would need to go to 1-1/4" ID PVC pipe and an adapter here with 1-1/4" PVC socket on one and and a barb for 1-1/4" poly pipe on the other, and use 1-1/4" poly pipe, since the barb in this case would be around 1" ID. There are a lot of ways to hook PVC fittings together! Just depends on what your are trying to accomplish. In my case, today, I needed a super-short PVC 1" threaded-to-1"-barb fitting to thread into the end of a Rainbird 1" sprinkler valve, then on the barb end stuffed into a piece of old already-in-place 1" poly flexible pipe (then secured with a hose clamp). To do that - see my photo - I glued this 1" PVC spigot-to-barb fitting into a 1" PVC threaded-to-socket adapter. Voila! threaded-to-barb adapter. Worked great. ONE SUGGESTION: When gluing PVC parts together you always hold the glued connection together for at least 30 seconds to prevent a natural push-out that happens (air trapped tries to push the joint apart). This effect is much worse for "regular" consistency PVC glue than "medium" thickness. Always use medium for any size pipe under 4". When using medium consistency PVC glue it is kind of rare to get strong push-out with PVC fittings (like happens with the regular consistency), BUT it did happen with this spigot barb fitting. Not a fault of the fitting, a fault of me getting a little careless and stopped pushing together at about 15 seconds rather than pushing/holding the joint together for 30 seconds to a minute. Pushed back in with a 1/4 twist when the push-out happened and all was good. Just remember to hold your joint together for at least 30 seconds - for ANY PVC fitting -and ideally 1 minute. And remember, NO WATER in the pipe or joint for at least 2 hours to let the PVC glue set properly. If there is some water in the pipe, like you are assembling existing sprinkler pipes that are still wet inside, but sure to use the "Rain-R-Shine" type of PVC cement that won't gel up if water hits it before it is fully cured (the 2 hour wait). Happy plumbing!

It's plastic, it's round and it did the job perfectly. Recommended.

This was used for my pond pump. It is excellent quality. Sturdy. Well made. Works as intended.

Barb too big,

Does what it's supposed to: convert 3/4" socket to barb. I needed to add a 3/4" ball valve into the flexible PVC down flow line on my HOB aquarium overflow so I could adjust the flow to match the sump pump. Fit into the schedule 80 ball valve just fine; glued and no leak.

This worked good for what I needed.

The fitting arrived properly. It was just what I needed to make my connection Repair.

Fits perfectly! 3/4in male pvc to flexible pvc. This was super hard to find for my hot tub but it fit great!