4" FIP Cleanout Flush Plug

The 878-40 from Sioux Chief is a 4” FIP Cleanout Flush Plug. It's designed to close the FIP outlet of a 4" cleanout fitting when it is not in use. Comes with molded-in brass insert which allows to connect a threaded rod and install a cleanout drywall cover (cap) when the finished walls are in place.


  • Reusable - easy installation and removal;
  • Plug with threaded brass insert for optional installation of cleanout covers;
  • Could be combined with FPT adapters to make customs cleanouts;
  • Acid resistant and chemically inert;
  • More durable than traditional ABS or PVC plugs;
  • Will not seize or weld in ABS or PVC fittings.

Technical Specifications:

  • Size: for 4" PVC/ABS/Cast Iron FIP cleanouts;
  • Height: 1";
  • Color: White;
  • Connection: MPT (MIP) Threaded;
  • Material: Glass-filled Polypropylene.
Test Tee Plug
Product Type
Test Plugs
Sioux Chief

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4" FIP Cleanout Flush Plug

  • Views: 2835
  • 4" FIP Cleanout Flush Plug QR Code
  • Brand: Sioux Chief
  • Model: 878-40
  • MPN: 878-40
  • Availability: 1
  • $ 2.90

Tags: DWV Testing Products, DWV, Plumbing Supply, PEX, Pipe Fittings, Residential Plumbing