Chemical Compatibility

Sleeved Plug Valve — Gases & Elemental/Inorganic Misc

Strong evidence

Named chemicals

dry chlorinechlorine and derivativesphosgenehydrogen cyanide (HCN)nitrogenhydrofluoric acid / HF derivativesammoniaisocyanateMDI/TDIhydrogen sulfide (sour service)

What LibertyCES's vendor documentation shows

Fugitive-emissions certification is what makes this equipment category the right answer for the Gases family: FE0 is certified below 20 ppm (AH class), HF4D and SR meet API 641 with zero packing adjustments across thermal cycles, XP3 across four cycles, SSV carries EPA Method 21. For a toxic gas — phosgene, HCN, chlorine, HF — the stem leak rate IS the engineering problem. The UOP and ConocoPhillips design listing on the Tertiary Top Seal is a named-customer endorsement found nowhere else in this vendor's catalog, and the HF Detection Paint option is a real, unusual safety accessory.

Materials documented for this service

M35-1 alloy (HF service)
Carbon steel
Nickel alloys
Tantalum (Barstock, Easi-Sleeve)
Titanium, Zirconium

Products cited for this service

XOMOX Sleeved Plug Valves FE0 (1/2"-16" / DN15-DN400, PN10/16/25/40 and Class 150/300, <20ppm fugitive emissions AH, triple sealing system; MDI/TDI, Chlor-Alkali, EDC, VCM, Methanol, Phosgene, Dry-Chlorine, Hydrogen Cyanide, Isocyanate, Butadiene, Nitrogen, Sulfuric Acid, Phosphoric Acid, Ethylene Oxide, Ethylene Glycol)XOMOX XP3 (1/2"-12", ISO 15848-1, zero packing adjustments across 4 thermal cycles; Chlorine & Derivatives, Caustic Soda & Derivatives, VCM, TDI/MDI, Ethylene Oxide/Glycol)XOMOX Low Emission HF4D (1/2"-12", Class 300, first soft-seated sleeved plug valve meeting ISO 15848-1 AND API 641 with zero packing adjustments during thermal cycling, 4th sealing barrier, HF Detection Paint option, M35-1 alloy)XOMOX Tertiary Top Seal (Class 300 and 600 DR, design listed/approved by UOP and ConocoPhillips for HF Alkylation Units, EPA Method 21 + API 607)XOMOX Barstock (wet chlorine gas explicitly listed)XOMOX SSV (extended bonnet + live-loaded packing, 40+ years proven, EPA Method 21)XOMOX L-TORQ (Ammonia, HCN, Chlorine, HF)

Sourced to

data/vendor-sources/crane-cpe-xomox-sleeved-plug-valves.md

Every material and product claim on this page traces to the vendor documentation listed above. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm current specifications with the manufacturer and request a spec review before final specification.

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