Shop replacement toilet fill valves for side-entry and bottom-entry cistern connections. The Hultons range includes 1/2-inch brass-threaded, compact-float and height-adjustable options for common repair work. Confirm where the water supply enters the cistern, the inlet size, available height and float clearance before ordering.
Side-entry and bottom-entry fill valves
A toilet fill valve controls the refill of the cistern after flushing. Side-entry valves connect through the side wall of the cistern, while bottom-entry valves connect through the base.
The correct replacement depends on entry position, inlet thread, available height and clearance around the float mechanism. Compare those details with the existing valve before ordering.
Choosing a replacement cistern fill valve
First identify where the water supply enters the cistern. Then check the connection size, valve height and internal space. A height-adjustable design can suit different cistern depths, but the full dimensions and adjustment range must still be checked.
For flush mechanisms, seals and other repair components, browse toilet spares and cistern parts.
Frequently asked questions
How do I know whether I need a side-entry or bottom-entry valve?
Look at where the supply pipe connects to the cistern. A side-entry valve passes through the side; a bottom-entry valve passes through the base.
What fill-valve measurements should I check?
Confirm the inlet thread, valve height, adjustment range and clearance around the float and other cistern components.
Are toilet fill valves universal?
Some suit a wide range of cisterns, but entry position, thread size, height and internal clearance still need to match.
Why does a toilet keep filling?
Possible causes include a fill valve that does not shut off, an incorrectly set water level or a separate flush-valve seal fault. Identify the failed component before ordering.
Need help matching the replacement? Read our toilet fill valve selection guide.