OATEY 34301 PEX Riser Supply 3/8" Comp x 1/2" IPS Threads x 20"

The Oatey 34301 riser is a 20 inch PEX supply tube with a 3/8 inch compression end and a 1/2 inch IPS threaded end. The 1/2 inch IPS thread goes onto the stop valve or threaded stub-out at the wall; the 3/8 inch compression end connects up to the faucet or toilet fill valve shank that takes a standard 3/8 inch comp connection.

Yes. The California, Maryland and Vermont sales restriction noted in Oatey's riser literature applies to part number 34015, not to the 34301.

It connects at the same two points, so it swaps in wherever your stop is 1/2 inch IPS female thread and your fixture shank takes 3/8 inch compression. The difference is the tube itself: PEX bends by hand without kinking the way soft chrome riser does, and unlike a braided connector it is trimmed to length rather than sold in fixed lengths with a pre-made nut. Check your stop first, since many angle stops are 3/8 inch compression outlet rather than 1/2 IPS thread, and that combination needs a different riser.

The Oatey 34301 riser is built to the performance requirements of ASME A112.18.6 and to ASTM F876 and ASTM F877, the standards that cover PEX tubing and PEX tubing systems. That is the spec inspectors look for on a flexible water supply connector.

The 34301 is a 20 inch riser, which covers most lavatory and toilet runs from an angle stop up to the fixture shank. PEX risers are meant to be cut to length at the compression end, so if the run is shorter you trim the tube rather than looping the excess behind the trap. If your stop sits lower than a typical vanity rough-in and you need more than 20 inches, step up to a longer riser instead of adding a coupling.

The 3/8 inch end is a compression connection, so it makes up with a nut and sleeve at the fixture shank the same way a chrome or braided supply does. The 1/2 inch IPS threaded end screws directly onto the female threads of the stop or stub-out and takes thread sealant or tape. No soldering, crimping or special PEX tool is needed on either end.

Oatey manufacturer part number 34301, UPC 038753343013. Ordering by the part number matters here because Oatey's riser line runs several end-connection and length combinations under adjacent numbers.

Each 34301 riser weighs 0.125 lb with a volume of 0.031, so a case of them adds almost nothing to a service van load. Handy if you are stocking a few lengths per truck for callback work.