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. G Piping system layout Supporting valves,accessories and vent lines <br /> V (cont.) Do not use fiberglass pipe g p p support the weight of heavy items in a line such a <br /> strainers and steel vent riser pipes.Provide separate supports for valves and a <br /> r <br /> ' Permanent <br /> I structure <br /> 0 <br /> ' Steel pipe clamp(typ) <br /> I e <br /> I / <br /> ISteel neer �- <br /> ' Fig.6-3.Support nsers by attaching <br /> them directly to structure walls. <br /> IDualoy 3000&fiberglass pipe <br /> L <br /> Bell x male NPT adapter Fiberglass vapor recovery' <br /> In r -----, Slope to tank Dogleg(4ftmin) <br /> I Never use metal swing joints. I /s iNtt in <br /> L____________J �Bell zmale NPT oda <br /> Dg(4pf <br /> Galelbc <br /> Fiberglass;product line <br /> Fig.6-4.Use flexible connectors to Dogleg(4 ft min) —� Turbine pump <br /> connect fiberglass pipe to tanks,turbine gall x male NPT adapter j <br /> outlets at tanks and to shear valves at <br /> dispensers.A4-Rlength of fiberglass Galvanized elbow <br /> pipe(dogleg)is allowable per <br /> API Specification 1615 in lieu <br /> of flexible connector. <br /> Precise alignment and make-up <br /> The matched taper bell and spigot joint does not always result in a precise and <br /> predictable insertion depth.This variation results from: <br /> • Manufacturing tolerances in the bell <br /> • Differences in length of tapers prepared on the jobsite <br /> • Difference of insertion depth when dry fit and after adhesive has been apl <br /> 8 <br />