The American Standard 16T984 is a manual flush valve for toilets. It is made of chrome-plated brass and has a vandal-resistant lever handle. The flush valve has a 2" top spud inlet and is ADA compliant. It can handle water pressures up to 80 PSI and flow rates up to 25 GPM. The flush valve does not include the vacuum breaker. Overall, this is a durable manual flush valve from American Standard that meets ADA requirements.