Top-end valve boxes are Quazite with a slip-resistant surface. More inexpensive options for a valve box are skimmer lids or PVC grating.
With metal lids on outdoor pools, the designer must watch the color and coating. The sun will heat all aluminum lids, so they must be coated with non-slip rubber of a light color. All features should have a control valve.
Valve boxes should be either a bronze Zurn or made with a slip-resistant PVC frame and lid. Skimmer lids are also an inexpensive, but not as attractive option. Pan-filled valve boxes (similar to surge tank access hatches) should be used on high-end facilities.
A “feature relief line” should also be considered when multiple features are supplied from a single pump. The intent of this line is to bleed off any flow when features are turned off. This will allow the feature pump to continue operation at its design point on its pump curve. The feature relief line should be sized to accommodate 100% of the feature flow and be piped to the closest pool wall and be covered with a properly sized square PVC grate.
There are several criteria to be determined when implementing the valve boxes and of these the major factors are the quantity of valves to be concealed, and location of valve box.
Powered by BetterDocs