Repair when Flushing


How to fix common problems with a Fluidmaster 400CARP PerforMAX® No Tank Removal Kit

The 400CARP PerforMAX® No Tank Removal Kit fixes most common toilet problems while reducing repair time by 30 minutes. It features the PerforMAX® toilet fill valve which is one of the quietest and most efficient solutions to fix and upgrade your toilet. Also featured is the PerforMAX® 2” flush valve repair kit that fixes common flush valve problems while giving the user the capability to optimize toilet performance while saving water and money. This kit works with most toilets with 2” flush valves including Kohler®, Toto® and American Standard®, and many more. Read more below.

Watch an installation video on the Fluidmaster 400CARP PerforMAX® No Tank Removal Kit

400CARP PerforMAX® No Tank Removal Kit

The PerforMAX® fill valve has a built-in flow regulator that allows for a quiet fill. Its adjustable toilet bowl refill rate allows the customer to optimize their water and money savings. It also offers a high enough toilet bowl refill rate to accommodate the high refill requirements of all 1.6 GPF toilets and 1.28 GPF High Efficiency Toilets (HET). In turn, allowing the toilet bowl to refill to its proper water level and maintain a powerful and complete flush.

Fix a deteriorated or damaged flush valve seat without dealing with any messy glue or removing the tank with the Flush Valve Repair Kit. It’s easy to install and it includes the Universal PerforMAX® High Performance Flapper that can be installed into more toilets than any other leading brand. Its adjustable feature allows it to be used in 1.28, 1.6 and 3.5+ gallon per flush toilets. Its reliable solid frame does not twist and provides the best seal. Only Fluidmaster has toilet flappers with built-in Microban® protection. The Microban® protection keeps the flapper cleaner by fighting flapper breakdown due to bacteria on the flapper itself.

For further information on where to buy this product or detailed installation instructions click here.

400CARP PerforMAX® No Tank Removal Kit

Frequently Asked Questions

  • Why doesn’t my sealant ring stick?
    The flush valve seat may not have been prepared properly. Make sure you have properly cleaned and thoroughly dried the flush valve seat before installing the sealant ring. It is very important that the sealant ring not come into contact with water prior to seating the sealant onto the drain or porcelain seat. If the sealant ring has been in use for a period of 5 years or longer and comes loose, replacement sealant rings are available to purchase. See Fluidmaster model 2602 on our website here.
  • How do I adjust my PerforMAX® flapper to save water and still achieve a powerful flush?
    The PerforMAX® flapper is a dial. By rotating the flapper within its rigid frame you can allow the flapper to close sooner or stay open longer. For more water savings, dial the flapper down to a lower setting. If the flush is weak, set the dial to a higher number.
  • Can I replace the flapper without replacing the entire Flush Valve Repair Kit?
    Yes, the PerforMAX® flapper is sold separately. It is Fluidmaster model 502, click here.
  • Is the PerforMAX® fill valve also sold separately?
    Yes, the PerforMAX® Fill Valve, model 400AH is sold separately. For information on where to buy click here.
  • Can the PerforMAX® Fill Valve be repaired?
    Yes, repair parts are available. For a list of repair parts and where to purchase them, click here.
  • Will this kit fit my toilet?
    This kit is designed to work with most 2 piece toilets with 2” flush valves. There are select one-piece toilets it will work in as well, but it will not fit low profile one piece toilets or toilets with 3” flush valves or canister style flush valves.

To download our free guide to fix common toilet problems please click here: Fluidmaster Toilet Repair Guide