| Applies when | lined fitting, ptfe-lined, molded liner, inserted liner, lined pipe fitting |
|---|---|
| Avoid | separately-molded, inserted liner, gapped liner-to-body construction (undefined) |
| Recommend instead | () |
| Rationale | JCS Tool's own competitive claim - that 90-degree elbow liners molded directly to the fitting body avoid both bend-induced liner stress and the housing-to-liner gap created by a separately-molded, inserted liner - is a general quality criterion applicable to any vendor's lined-fitting products, not just JCS's own. This is a vendor-agnostic evaluation criterion: the molded-vs-inserted-liner distinction affects mechanical strength and vacuum rating regardless of which brand ultimately gets specified, and is cross-vendor-consistent with the PTFE-cold-flow-at-threaded-joints failure mode already documented in the sulfuric-acid-98plus-material-selection rule (Griffco). |
| Confidence | confirmed |
| Source | data/reference/nuance-appendix.md (nuance 58), data/vendor-sources/jcs-tool-ptfe-lined-fittings.md |
This is a general engineering rule derived from real field/case-study evidence, not a substitute for a project-specific specification review — confirm against your exact process conditions before ordering equipment.
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Source: Liberty Chemical Equipment & Supply, Inc. (LibertyCES) — engineering data compiled from real vendor and field-verified sources. For a free spec review, call James Riggins at (559) 395-5500 or email james@libertyces.com / sales@libertyces.com. Website: libertyces.com.