Why use iron fittings with pvc pipelines?
Why use iron fittings with pvc pipelines?
(OP)
Why do people often specify cast iron or ductile iron fittings with pvc pipes? What is the advantage? For example, if I specify C900 pvc pipe, why not just specify C900 pvc fittings? Thanks.





RE: Why use iron fittings with pvc pipelines?
Steve
RE: Why use iron fittings with pvc pipelines?
Some manufacturers may now be attempting to reinforce pvc fittings with somehow overlayed composite wraps, I guess hoping for more successful performance than prior offerings.
RE: Why use iron fittings with pvc pipelines?
Local authorities like rubber ring joints as they perceive it to be a simple install that can be managed for quality.
Current generations of PVC-M and PVC-O are thinner wall than the PVC-U. It is questionnable if they could be joined using solvent cement. Using RRJs and thrust blocks avoids all that expensive testing of the joint to demonstrate adequacy. In addition the prospect of even more large diameter fittings injection moulds involves considerable investment.
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RE: Why use iron fittings with pvc pipelines?