Reliability is everything when it comes to fill valves. That's why the Wolverine Brass Pro Series Fill Valve, with Brass Shank, gets the job done and then some. The patented design features our exclusive anti-siphon technology with a water shutdown mechanism for the ultimate in reliable day-in, day-out performance. Engineered exclusively for the professional plumbing market, the valve is also easy to install and adjust with a sturdy brass shank and compact, all-in-one design. For end-users, whisper operation means they'll hardly hear it working.