1. Unhook chain at the flapper end: 2. Adjust the flapper chain according to the length of your old flapper chain: Please click here for detailed instructions on how to adjust the flapper chain. 3. Adjust float to the location it was on the previous flapper by removing the black disks: 4. Adjust float higher on the chain:
Variable air volume. Variable Air Volume (VAV) is a type of heating, ventilating, and/or air-conditioning (HVAC) system. Unlike constant air volume (CAV) systems, which supply a constant airflow at a variable temperature, VAV systems vary the airflow at a constant temperature.
VAERS is a national reporting system mandated by the National Childhood Vaccine Injury Act (NCVIA) in 1990, and administered by the Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) [1,2]. Currently VAERS receives 30,000 reports annually and has collected more than 200,000 reports since 1990 [1].