Guide To Pool Heating

Page 10 of 51

The objectives for plumbing are: a) Being able to drain the pool; b) Being able to allow the

water to rise from the bottom and towards the top; and, c) Being able to winterize the pool if

needed. Since the plumbing is exposed, aboveground pool owners have more options they can

consider.

If cost is not an issue, using the flowreversal valve may be the best approach for

aboveground pool owners. The support system plumbing will be better organized. [This assumes

a main drain is being used which may not be the case.]

Illustration 4

Normal Flow

Reverse Flow

In the modified plumbing shown above as “REVERSE FLOW”, water will flow from the

“main drain” located in one corner of the abovegroundpool in a circularfashion to the “return

line” which is located in an opposite corner of the aboveground pool.

Now that you have a good idea of what the flowreversal valve does, let’s examine the

physical aspects of the valve.