Where can find element type

2

Hi @shibujoseukken,

You missed ToElements()

import clr
clr.AddReference('RevitServices')
from RevitServices.Persistence import DocumentManager
doc = DocumentManager.Instance.CurrentDBDocument

clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.Elements)

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Plumbing import *

pipeType = FilteredElementCollector(doc).OfClass(PipeType).ToElements()

OUT = pipeType

image

EDIT : To retrieve the Piping Systems, look at this previous post :