Most people believe that if something costs more, it has to be better quality. In the case of generic drugs, this is not true, says Gary Buehler, Director of FDA's Office of Generic Drugs. The standards for quality are the same for brand name and generic products..uch of FDA's review of generic drugs and brand name drugs is the same, Buehler explains (See Same FDA Requirements for Brand-Name and Generic Drugs below).
Then evaluate tank water heaters on the same gph basis to determine how many gallons of storage are needed to meet this demand. While tankless water heaters do not run out of hot water, if not sized correctly, the flow rate of that water can be adversely impacted.
For gas-fired water heaters, Btu/h can be calculated as. calculate the additional load using Section VI, heater with a recovery rate of 1116 GPH 40Â°F to 140Â°F and 368 gallons storage. Once the actual hot water flow rate is known, the heater can then be selected for the total demand and.