Chemical Compatibility

Chemical Injection Pump — Hydrocarbons/Fuels/Oils

Strong evidence

Named chemicals

methanolnatural gas (as motive fluid)corrosion inhibitorssolids/scale inhibitorscrude oil (host stream)

What LibertyCES's vendor documentation shows

The family the whole Graco chemical-injection line exists for — methanol injection at gas wellheads to prevent hydrate formation, plus corrosion and solids inhibitors into hydrocarbon streams. The FFKM / FKM-ETP / HNBR seal ladder is the real compatibility axis and the reason Wolverine is quoted to spec when G-JR/Python's fixed configurations do not fit. Python's natural-gas-motive design is genuinely distinctive: the host stream powers the pump, so no electricity is needed in a classified area. Real cross-reference flagged: Graco maintains an 'ONG Chemical Compatibility Guide' and 'Python Pump Configurator' as separate tools, not yet captured.

Materials documented for this service

Plunger: stainless steel or ceramic
Seals: FFKM, FKM-ETP, HNBR for aggressive/corrosive chemicals
316 stainless steel base with optional external coatings
Prime valve: galvanized steel (G-JR)
Adjustable fluid packing claimed to last up to 25x longer than non-adjustable seals

Products cited for this service

Graco G-JR (AC and DC electric, ships with Harrier EZ-JR controller, 2 real product options, manual 3A8109C)Graco Python (regulated natural gas or compressed air driven, CE and ATEX approved, extreme-duty plungers/seals/timing valves, 39 real product options)Graco Wolverine Drive Modules (C1D1 and C1D2 hazardous-location approved, duplex-ready by default) + Wolverine Fluid Modules (26 configurator options, quick-disconnect fluid ends serviceable by hand in under 10 minutes, ND leak-pathway models)Graco Harrier EZ-JR temperature-based dosing controller, Part# B32001Harrier+ AC Part# B32630 / DC Part# B32629 (cellular, patent-pending adaptive flow control)Harrier EZ Part# B32110 with LVDGraco KRAKN MPI solenoid fluid manifold (replaces up to 8 chemical pumps)Harrier+ MPI (up to 8 injection points from one pump and controller)

Sourced to

data/vendor-sources/graco-chemical-injection.md
data/vendor-sources/graco.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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