use: Replacement Humidifier Parts Drain Type In-Line Strainer 4004 It is a small filter that can be installed in the inlet fitting of the water solenoid valve to allow water flow into your humidifier or stop the water flow to prevent debris from entering the solenoid valve.
Prompt: Mineral and grit build-up needs to be checked at least once a year!
Top quality: The Drain Type In-Line Strainer 4004 is a tiny nylon component made of high-quality materials that is built to last.