4004 Aprilaire Water Line Strainer


One Aprilaire Water Line Strainer Part #RP4004. Since September 2015 the 4004 strainers are coming from the Aprilaire, Research Products Factory red in color.

3 in stock


aprilaire logo2 aprilaire20logo

  • The 4004 Aprilaire Water Line Strainer is a brand new genuine Aprilaire part.
  • A problem that could cause water not to flow in your humidifier could be that the water line filter strainer is stopped up.
  • The water line strainer is the letter “C” in the picture below.
  • The RP4004 Water Line Strainer is about 1″ long and fits inside the inlet side of the Aprilaire 4040 valve.
  • A new Aprilaire 4040 solenoid valve comes with the 4004 preinstalled. Please click here if you are interested in seeing the Aprilaire 4040 solenoid valve that we sell.
  • Many Aprilaire humidifier models use the 4004 because many models have the 4040 solenoid valve.
  • Some of the Aprilaire humidifier models where the 4004 is used are: 550, 400, 600, 700, 760, 760A, 768, 440, 350, 112, & 110. In fact, I do not see any of the Aprilaire humidifiers that do not use it!
  • Below are pictures of the strainer. The picture on the left shows how the strainer is inserted into the 4040 solenoid valve. The picture on the right is a close-up.
  • Please email us anytime if you have a question. Our email address is: arnoldservice@gmail.com
  • We Would Love to Help You Out Have Your business
4004 Aprilaire Water Line Strainer
Since September 2015 the 4004 Aprilaire Water Line Strainers Are Red.

4004 Aprilaire Water Line Strainer  4004 Aprilaire Water Line Strainer

Additional information

Weight 1.0 lbs
Dimensions 6 × 4 × 4 in


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