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1 ta id", ttriP <br />01° ° <br />t\A‘' <br />tre` <br />W. DISINFECTANT FEEDER (3133B) <br />Approved type. <br />If gas chlorine, scale required. <br />'6 <br />X. SKIMMERS (3134B) (Pool area not over 5000 square feet) <br />One skimmer for each 500 square feet or fraction thereof. <br />Capable of withdrawing minimal 75% required recirculation capacity. <br />Built-in type and recessed into pool wall. <br />Adjust automatically to variations in water level, minimum 4 inches range. <br />Anti-airlock device — equalizer line. <br />Screen trap (Basket). S;032- 4:5 M / 4 A; <br /> 7. Gate valve. IA <br />b, <br />-- • Nwo;r\p`t If 2,11 M <br />Y. PERIMETER OVERFLOW (3134B) (Required for pools over 5000 square feet) <br />Capable of withdrawing minimum of 75% required recirculating capacity. <br />Channel minimum 3 inches deep; bottom width of channel minimum 3 inches; opening <br />beneath deck into channel minimum 4 inches. <br />Channel lip maximum 12 inches below top of deck; rounded lip edge shall not be thicker than <br />2 1/2 inches nor thinner than 1 inch from the top 2 inches. <br />Channel outlet minimum 2 1/2 inches spaced not more than 15 feet apart and channel slope <br />to outlets not less than 1/4 inch per foot. <br />Channel drain grates 1 1/2 times area of outlet pipe. <br />Surge tank storage minimum 1 gallon per square foot of pool surface. <br />Automatic surge flow control to make-up water with manual override for maintaining pool <br />water level. <br />Z. BOTTOM DRAIN (3108B, 3134B, AND 116064) <br />ly 1. Designed so that the pool can be emptied. <br />4 2. Gate valve. <br />F-1, 3. Grates removable only with tools. <br />SPA ONLY — Duplicate drains for both the recirculation system and aeration/jet system or <br />single drains with safety covers for both systems. <br />--5. Wading Pool — Main drain suction outlets under 12 inches across shall be covered with <br />antivortex grates. <br />---6,— Wading Pool: Two circulation drains per pump, hydraulically balanced and symmetrically <br />plumbed through one or more "T" fittings, and are separated by a distance of at least 3 feet <br />in any dimension between the drains.