NuFlush Universal Toilet Tank Fill Valve, Fits all American type toiletsBuy direct from NuFlush and save big.The fill valve fills the toilet tank with water from the water supply line after it has been emptied by a flush. It replaces the ballcock and is more efficient and easy to install. This is an anti-siphon design-fill valve with adjustable height from 9" to 14". This may be the most popular valve in the world now. Replace your old style ballcock valve with a better performing NuFlush water saving fill valve.* Replaces ballcocks* Easy to install* Height adjusts 9"-14"* Refills quickly; * Universal fit for 1 and 2 piece toilets* Corrosion-resistant material* Anti-siphon operation, code approved* Won"t contaminate fresh water supply Product Specifications HEIGHT INCHES 9-14 BRAND NuFlush FOR USE WITH Most Toilets.