Fitting — Acids
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LibertyCES has documented Fitting in Acids service, including Hydrochloric Acid and Sulfuric Acid. Documented models include Poly Processing Fume-Tight Manway Cover and GORE Gasket Tape Series 1000. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a free spec review.
Notes from the vendor documentation
Fume-Tight Manway Cover explicitly required for HCl applications — direct parallel to the project's hcl-vapor-no-metal rule.
Materials documented for this service
- PVC/CPVC/PP/PVDF/316SS/Titanium/Hastelloy C-276 (bulkhead fittings)
Products cited for this service
Real Specifications
| Spec | Value | Source document |
|---|---|---|
| Fume-Tight Manway Cover sizes/materials | 17", 24"; bolts SS/Alloy C-276/titanium; gaskets EPDM/Viton/Viton GF/XLPE/Buna; required for HCl applications | Poly Processing — Fittings & Accessories |
| Threaded Lid limitation | Keeps out rainwater/debris only — vendor states it is not for fuming chemicals or fume-tight applications | Poly Processing — Fittings & Accessories |
| GORE Universal Pipe Gasket (Style 800) rating | Typical use -60°C to 230°C (-76°F to 445°F), full vacuum to 40 bar (580 psi); named use case includes sulfuric acid and other highly aggressive media | GORE — Gaskets, Sealants & Compression Packing |
| ePTFE chemical resistance claim | Chemical resistance to all media pH 0-14, except molten alkali metals and elemental fluorine | GORE — Gaskets, Sealants & Compression Packing |
Poly Processing's own spec draws a hard line between the standard Threaded Lid — rainwater/debris only — and the Fume-Tight Manway Cover required for HCl service; using the wrong one looks identical on day one but fails the moment fuming acid vapor is present.
HCl fume-tight requirements and sulfuric acid gasket selection are two different failure points on the same fitting — a manway cover rated for rain isn't rated for fumes, and GORE's Universal Pipe Gasket carries a specific, named sulfuric-acid use case rather than a generic "chemical resistant" claim.
Every material and product claim on this page traces to real, vendor-published documentation on file with LibertyCES. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm current specifications with the manufacturer and request a spec review before final specification.
FAQ
Can Fitting handle Acids?
Fume-Tight Manway Cover explicitly required for HCl applications — direct parallel to the project's hcl-vapor-no-metal rule.
What wetted materials should Fitting use in Acids service?
Materials documented for this service: PVC/CPVC/PP/PVDF/316SS/Titanium/Hastelloy C-276 (bulkhead fittings). Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a spec review before final specification.
Which Acids chemicals does this cover?
Named chemicals in this documentation: Hydrochloric Acid (fume-tight requirement), Sulfuric Acid.
Which Fitting models are documented for Acids?
Documented examples include Poly Processing Fume-Tight Manway Cover, GORE Gasket Tape Series 1000 (glass-lined steel).
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated