Fill Valves

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400LS – Universal Fill Valve, Leak Sentry®

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The 400LS  Leak Sentry® Universal Water Saving Toilet Fill Valve has all the same benefits of the 400A fill valve plus it comes with leak prevention technology along with a water saving roller clamp. Leak prevention technology stops the automatic refill of the toilet tank due to a worn or faulty flapper.  The roller clamp allows you to regulate the amount of water refilling the toilet bowl.

Fluidmaster recommends using the 400LS fill valve in toilets that date prior to 1994 with flush volumes between 7 gallons per flush and 3.5 gallons per flush.

  • Prevents automatic refill of water when flapper is worn and water is draining out
  • Code approved
  • Anti-Siphon design – Won’t contaminate fresh water supply
  • Also replaces 400LG Leak Guard Valve
  • Toilet not supported would be: Flapperless, Low Boy 1 Piece Toilets  and Side Entry Valves.

To check your toilet’s flush volume, please click here.

400LS – Universal Fill Valve, Leak Sentry®

Download Installation Instructions

BUY ONLINE

The 400LS – Universal Fill Valve, Leak Sentry® is available online, from our following retail partners.
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IN CANADA:

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