Project Guide

How To Install a Ballcock Fill Valve

1
Shut Off the Water and Flush the Toilet
Shut water flush toilet - Install Ballcock Fill Valve

Once you've flushed the toilet and emptied the tank, go underneath the tank and place a bucket under the retaining nut. Now remove the ballcock retaining nut with an adjustable wrench and take out the old ballcock assembly.

2
Align the New Ballcock Valve
Place align new valve - Install Ballcock Fill Valve
  • Attach a new cone washer to the new ballcock tailpiece and insert the tailpiece into the tank opening 
  • Align the float arm socket in float arm will pass behind the overflow pipe. 
  • Screw the float ball onto the float arm.
3
Attach Refill Tube
Attach refill tube - Install Ballcock Fill Valve

Bend or clip the refill tube so that the tip is inside the overflow pipe.

4
Attach Supply Line and Turn On Water
Attach supply line  - Install Ballcock Fill Valve
  • Screw the mounting nut and the supply-line coupling nut onto the ballcock tailpiece and tighten it with an adjustable wrench. 
  • Turn on the water and check for leaks.


TIP: Do not over-tighten the mounting nut. It can crack the toilet tank.

5
Adjust the Water Level in the Tank
Adjust water level tank - Install Ballcock Fill Valve

The water level in the tank should be about 1/2 inch below the top of the overflow pipe, or align with the marked "full" line inside the tank.