Hayward 1.5in x 2in Suction Outlet Assembly-White 8 inch Dual Suction Outlet M - Page 3

Page 3 of 8 DUAL SUCTION OUTLET SET • RECOMMENDED SYSTEM SPECIFICATIONS: ACCEPTABLE PIPE SIZE FOR MAXIMUM RECOMMENDED SYSTEM FLOW RATE PER APSP-7 (6 FT/SEC IN THE BRANCH LINE) Pipe Size [mm] Flow rate GPM [Liter/Min] Pipe Size Flow rate [mm] GPM [Liter/Min] 1 ½" 40 2 ½" 90 [50] [150] [75] [340] 2" 63 3" 138 [63] [240] [90] [522] Chart 1 ISDUALSWG REV D WGX1048E Suction Outlet Covers are rated for Floor Only at 125 GPM FIG 1 WG1048EW Suction Outlet Covers are rated for Wall or Floor at 72 GPM Note: 1" Hg = 1.13 Ft of Head In the event of one suction outlet being blocked, the remaining suction outlets serving that system shall have a flow rating capable of the full flow of the pump(s) for the specific suction system. Example: In the System shown in Diagram 1, two (2) "Floor Only" suction outlet covers are selected and mounted. These covers are individually rated for 125 GPM. For a desired flow rate through the pump of 100 GPM, a minimum pipe size from the Chart 1 is selected at 3". At the desired flow of 100 GPM one cover could be partially blocked and the other suction outlet flow would be below the rated 125 GPM of the "Floor" mounted suction outlet cover. Since there are two outlets flowing in normal operation, and the allowable velocity in the interconnecting piping is only 3ft/sec, the same pipe size is required in the interconnecting piping. Example: In the System shown in Diagram 2, one (1) "Floor Only" suction outlet cover, rated at 125 GPM, and one (1) "Wall or Floor" suction outlet cover, rated at 72 GPM are selected and mounted. For a desired flow rate through the pump of 50 GPM, a minimum pipe size from the Chart 1 is selected at 2". At the desired flow of 50 GPM either cover could be totally blocked and the other suction outlet flow would be below the rated 72 GPM of the wall mounted suction outlet cover. Note: Flow may be limited by entrapping force in dual suction systems. Diagram 1 Floor Outlets, Total system rated flow 125 GPM Interconnecting piping System Branch piping Total System rated flow 72 GPM 125 GPM Rated Floor Wall 72 GPM rated Interconnecting piping System branch piping Diagram 2