Keeney Boxed Adjustable Fill Valve. A new fill valve may fix noisy toilets, toilets that continually run and waste water, toilets that are leaking from the tank and toilets that are slow to refill the tank and bowl. The Keeney Fill Valve fits most standard toilets, adjusts from 9.5 inch to 13.5 inch. Has a long lasting seal that can be wiped clean, no need for replacement parts. Has an easy push button for simple water level adjustment. Also has a locking ring for safe and secure height adjustments. The fast fill design allows for maximum tank refill speed.