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City Plumbing GB£9.71Visit shop Plumbright Bottom Entry Brass Toilet Cistern Fill Valve T6800
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B&Q£10.68Visit shop - Plumbright T6800 Bottom Entry Cistern Fill Valve 1/2 Inch
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The Plumbright Bottom Entry Cistern Fill Valve (T6800) is a high-performance replacement component designed for professional plumbers and homeowners looking to upgrade their toilet cistern hardware. It offers superior durability thanks to its 1/2 inch brass thread shank, which prevents the common snapping issues found in plastic models. While it is highly versatile and fits most standard cisterns, users should confirm the vertical space within their specific unit to ensure the 194mm-294mm height adjustment range is sufficient for their setup.
| Model Part Number | T6800 |
|---|---|
| Brand | Plumbright |
It is designed for most standard bottom-entry cisterns, provided there is enough vertical clearance for the 194mm-294mm adjustment range.
Yes, the valve is engineered to operate effectively in both high and low-pressure plumbing configurations.
No, this is specifically a bottom-entry fill valve and is not compatible with side-entry configurations.
The product comes with a 3-year guarantee against manufacturing defects.
You will typically need an adjustable wrench and a pair of pliers, though much of the installation can be done by hand.
Check that the float is not obstructed by the cistern wall and ensure the water level is set below the overflow pipe.
Ensure the water supply stop-valve is fully open; partially closed valves can cause vibration and noise.
Check that the rubber sealing washer is seated correctly and that the locking nut on the brass shank is tightened sufficiently.
To install, first isolate the water supply and drain the cistern. Unscrew the old valve, ensuring the rubber sealing washer is correctly positioned before inserting the new brass shank. Tighten the retaining nut by hand before giving it a final quarter-turn with a wrench. The valve is designed for bottom-entry systems only. Ensure that the internal float has enough room to move freely without hitting the cistern walls. For long-term care, the chlorine-resistant materials prevent degradation from treated water; however, if you live in an area with extremely hard water, occasionally inspect the internal filter for scale buildup to maintain optimal flow rates.
