User rated 5/5 drops

The HydroClean Fill Valve was very easy to install and set up. It works very well in conjunction with the dual flush valve also installed in my 30 year old Commode. Brought my toilet up to 21st century operation.

Joylene, Nebraska

HydroForce® Flappers


Flappers are the leading source of leaks in toilets, leaking as much as 200 gallons of water per day. With, installing the wrong flapper can silently waste up to 4 gallons of water per flush. MJSI's line of flappers are engineered to ensure water-tight seals even under harsh in-tank conditions.

HydroForce Adjustable Flapper
Model HFL190

  • Replaces all 1.6 and 3.5 flappers

  • Movable float easily adjusts to maximize water savings

  • Works in every size tank

  • Premium silicone construction gives added protection

  • Corrosion and chlorine resistant

  • Easy to adjust after installation

HydroForce Leak Resistant Flapper
Model HFL105

  • Water-tight design resists leaks

  • Engineered to withstand extreme water conditions

  • Universal fit for most toilets

  • Fits both plastic and brass flush valves

  • Corrosion and chlorine resistant

  • Five year warranty



Industry Studies About Flappers Toilet Flappers: The Weak Link of Water Conservation By John Koeller, P.E. Summary: The study was done to explore the flapper as an underestimated source of leakage and inefficiency. Specifically, it quantifies leaking due to flapper warping and corrosion. It also provides information regarding the negative effects of pairing a toilet with the incorrect after market replacement flapper.Click here to download the report.


Ultra-Low Flow Toilet Flapper Marketing and Implementation Strategies: Program Prepared for Tampa Bay Water in cooperation with Southwest Florida Water Management District Summary: Literature designed to provide consumers with the awareness that replacing a toilet flapper with the incorrect replacement flapper can lead to large amounts of waste. Included are verifications of the the fact that this inefficiency affects even low-flush toilets and a list of proper flapper replacements for a large number of makes and models of toilets.Click here to download the report.