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.
I have a question relating to flow Ill have a heat pump heater. I am interested in the meaning of this statement: 1/2 the rpm = 1/2 the flow, 1/4 the head and 1/8 the power.. Assume my pool has 35,000 gallons, and a Total Head of 60 feet. Also assume that I have a Pentair WhisperFlo 2 HP 2-speed Full-Rated pump (WFDS-8). Max pump flow is about 100 GPM at that Head. But the pump can turn the water once every 8.3 hours or so since the 2 piping has a max flow of about 72 GPM.