Insert the new fill valve into the tank opening. Secure it firmly in place using the lock nut. Hand-tighten; avoid over-tightening. Reconnect the water supply line.
Step 4 · Install the New Fill Valve
Insert the new fill valve into the tank opening. Secure it firmly in place using the lock nut. Hand-tighten; avoid over-tightening. Reconnect the water supply line.
