large Diameter Fusable PVC Pipe
large Diameter Fusable PVC Pipe
(OP)
Does anyone have experience in successfully installing large diameter (36-in and larger) fusible PVC piping? This is a fairly new product to the market. My client will not use it without seeing some references first.
DaveP
DaveP





RE: large Diameter Fusable PVC Pipe
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: large Diameter Fusable PVC Pipe
RE: large Diameter Fusable PVC Pipe
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: large Diameter Fusable PVC Pipe
Otherwise, there also appears to be a perception (being cultivated by some plastic pipe manufacturers and manufacturers/providers of fusing equipment and services) that gasket joints for pipelines in general are somehow bad or inferior. In my opinion, it is indeed generally undesirable when any pipe or joint that is made up in the field, and I’ll note that includes fused or welded connections (that in spite of the spin are nevertheless “joints”), leaks. However, when properly assembled it would appear at least most contemporary good quality joints do not leak, and in particular I think at least good quality flexible, rubber-gasket joints may well also offer some arguable, long-term technical advantages over more rigid/welded systems. Is it possible these arguable advantages in some cases may include a general ability to assemble in virtually all manner of varied weather/conditions with available local/simple tools, equipment and less than very highly skilled labor, as well as a function of space etc. in the sockets a subsequent (three-dimensional) ability to accommodate/provide relief for some degree of differential settlements or other ground/pipe movements, thermal excursions/movements, Bourdon and Poisson effects of pressure and temperature excursions etc., and all maybe without additionally/significant stressing and/or fatiguing the pipe walls (or lateral service etc. connections to the piping)? Is it also possible that the future long-term performance of on the other hand more rigid systems like welded et al may be some more uncertain, as I believe the bulk of “C900” pipe experience since 1975 is with gasketed joint pipes? In this regard, I noticed in the 1989 version C900 standard even made a specific comment in the Foreword that “Provisions for solvent-welded joints throughout the standard were deleted”. At that time this appeared to be a deliberate distancing from solvent welding and any baggage it might entail. (However, I’ve since noticed solvent welding has apparently been sort of resurrected in some more current standards, at least in the area of cheap fitting fabrications.)
Maybe these comments will prompt some further input from more learned folks that will enlighten us all.