The WaterSentinel Scale Inhibitor is among the highest quality water filters you can purchase today. The WSP04 is designed to extend the life of hot and cold water systems, downstream plumbing fixtures and pipes by removing scale. Our scale inhibitor filters are manufactured using the best available materials with unparalleled attention to quality. The result is superior products having high capacities for a wide range of applications.

We look closely at things other companies are not even discussing. Things like extraction testing on a lot basis ensure that our carbons are not adding anything undesirable back into the water and that the fit, finish and color of our products are consistent and appealing. In addition, we perform 100% quality testing on every filter prior to leaving our facility.

WaterSentinel scale inhibitor filters are constructed from the highest quality carbons, specially selected plastics and proprietary media to give our customers some of the best performing filters in the industry.


  • 100% Factory Leak Tested
  • Assembled in the USA
  • Best used for the reduction/removal of scale
  • 3/4" inlet/outlet connections designed for unrestricted flow
  • Ideal for residential and small commercial applications

Operating Pressure: 30-125 PSI
Operating Temperature: 40°F - 100°F
Flow Rate: 10 gpm
Filter Life: 6 months

Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before and/or after the system.

WARNING: To reduce the risk of property damage due to water leakage, this filter MUST be installed in accordance with the manufacturers specifications and instructions. This filter unit must be replaced every 6 months, at the rated capacity, or sooner if reduced water flow occurs. Protect from freezing. Failure to follow instructions and operating specifications will void your warranty. Further, manufacturer assumes no responsibility or liability for damages arising out of misuse of the product. Protect from freezing.