Project Guide

How to Install a New Flush Valve in Your Toilet

1
DRAIN THE TOILET TANK
Remove the toilet tank - Replace Toilet Flush Valve
  • Turn off the water at the shutoff valve and drain tank by flushing the toilet.
  • Disconnect the water supply line with an adjustable wrench.
  • Unscrew the tank bolts using a screwdriver and an adjustable wrench.


2
REMOVE THE TOILET TANK
Remove the toilet tank - Replace Toilet Flush Valve

 Remove the toilet tank and gently place it upside down on an old towel or rug. 

3
INSTALL A NEW FLUSH VALVE
Install new flush valve - Replace Toilet Flush Valve
  • Unscrew the spud nut with a spud wrench or a pair of slip joint pliers and remove the old flush valve.
  • Slide the cone washer onto the tailpiece of the new flush valve - the beveled side of the cone washer should point toward the end of the tailpiece.
  • Insert the flush valve into the tank opening so that the overflow pipe faces the fill valve.
4
INSTALL A NEW FLUSH VALVE
Install new flush valve - Replace Toilet Flush Valve

Screw the spud nut back onto the tailpiece of the new flush valve, tighten with a spud wrench or a pair of slip joint pliers, and place the soft spud washer over the tailpiece.

5
REINSTALL THE TOILET TANK AND REPLACE THE FLAPPER
Reinstall the toilet tank - Replace Toilet Flush Valve
  • Reinstall the toilet tank and connect water supply line. 
  • Replace the flapper and reconnect the refill tube to the top of the overflow tube.
  • Turn on the water and check for leaks.