🔧 What this part is
Waterway Plastics Tee Assembly With Relief Plug 2" Spigot X 2" S X 3/8" Fpt Wi, part number 400-4260. A plumbing fitting for spa and pool pipework; the sizes and thread types have to match what is already in the pipe run.
Size as listed: 2" x 3/8"; connections: spigot and female pipe thread.
✅ Check before you order
- Measure the part you are replacing – this one is listed as 2" x 3/8".
- The connections have to match: spigot and female pipe thread.
- The number on the old part should read 400-4260, or the maker’s equivalent.
- Not sure? Send us a photo of the old part and any number on it, and we will tell you whether this is the one.











