Laserfiche WebLink
Piping system layout Supporting valves,accessories and vent lines <br /> (cont.) Do not use fiberglass pipe to support the weight of heavy items in a line such as valves, <br /> strainers and steel vent riser pipes.Provide separate supports for valves and accessories. <br /> Permanent p <br /> structure <br /> 0 <br /> Steel pipe clamp(typ) <br /> Steel riser <br /> Fig.6-3.Support risers by attaching <br /> them directly to structure walls. <br /> Dualoy 3000/L fiberglass pipe <br /> Bell x male NPT adapter Fiberglass vapor recovery line <br /> Slope to tank <br /> ®®®®®®®®®®®® Yein/R(min) Dogleg(4 R min) <br /> 1 Never use metal swing joints. 1 Bell x male NPT adapter <br /> L------------J <br /> Dog leg(4 R min) Galvanized elbow <br /> Fiberglass product line I <br /> Fig.6-4.Use flexible connectors to Dogleg(4 R min) ' Turbine pump <br /> connect fiberglass pipe to tanks,turbine Bell x male NPT adapter <br /> outlets at tanks and to shear valves at <br /> dispensers.A 4-ft length of fiberglass Galvanized elbow„ <br /> pipe(dogleg)is allowable per <br /> API Specification 1615 in lieu <br /> of a flexible connector. <br /> Precise alignment and make-up <br /> The matched taper bell and spigotjoint 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 applied. <br /> 8 <br />