Manual FloWise Urinal Flush Valve, 0.5 gpf Self-cleaning brass piston with integral wiper spring prevents clogging and reduces maintenance Piston operation delivers superior flush accuracy and repeatability Piston valve remains closed and does not need to be reset after loss of water pressure Non-hold open handle Positive seal ensures leak-free performance No external volume adjustment Durable chrome-plated cast brass construction is ideal for commercial applications Chloramine-resistant EPDM seals Adjustable tailpiece for rough-in flexibilityCEC flow rate compliant when paired with non-wall mounted urinals. Non-compliant when paired with wall mounted urinals - CEC regulation requires 0.125 GPF Why Buy American Standard From Us: We are an American Standard Preferred Authorized Online Dealer We Only Ship Showroom Quality products vs Builder Grade quality found at big box retailers All metal parts, not plastic like some of our competitors Customer Care Experts Available 7 Days a Week to Serve You Before & After Purchase A Showroom Experience from the Comfort of Your Home or Office