Keeney’s Secure Connect Fill Valve with Supply Line. Easiest installation of a fill valve, fewer connections to make! The 12" stainless steel supply line is permanently factory connected eliminating over tightening of the nut (and the leaks that over tightening causes). Universal fill valve adjusts to fit most toilets with a 9.5" 13.5" height range. Designed for a fast, quiet fill 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.