Chemical Compatibility

Cryogenic Ball Valve — Hydrocarbons/Fuels/Oils

Strong evidence

Named chemicals

LNG / liquefied natural gasnatural gaspropanebutyleneliquid oxygen (co-listed service)

What LibertyCES's vendor documentation shows

The double-seal detail is the real engineering content: the 1500 Series seals twice — at the top of the valve AND the top of the bonnet — which is what makes a cryogenic extension trustworthy rather than just longer. The L-port diverter and Vee-ported control configurations mean one cryogenic body covers isolation, diversion and throttling. 9500's customizable bonnet lengths including subterranean box installations is the install-side flexibility to lead with on an LNG terminal page.

Materials documented for this service

Hastelloy C and Monel 400 body/ball/stem options (1500 Series)
316SS
Carbon steel
Flexitallic spiral wound gasket
Delrin / PEEK seats (HP1100 platform, for reference)

Products cited for this service

AVCO 1500 Series (1/4"-4", up to Class 600 / 2000 WOG; single-piece cryogenic bonnet extension bolted to the body, sealed twice via Flexitallic spiral wound gasket; configurable as an L-port cryogenic diverter or Vee-ported cryogenic control valve)AVCO 9500 Series (1-1/2"-6", Class 150/300, standard-length bonnets keeping the operator a safe distance from the pipeline, customizable lengths incl. subterranean box installs)AVCO 11500 and 19500 Series (extended-bonnet cryogenic variants of the 11100 and 19100 trunnion valves)

Sourced to

data/vendor-sources/avco-valve-ball-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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