CS&P Complete Cryogenic Pump Skid — 50mm 15 GPM 75 HP

What service has it been in, and what were the running hours?

The skid is rated for liquid oxygen, liquid nitrogen, liquid argon, and LNG service, but the listing does not state which product it actually pumped or for how long. Request service history documentation from the seller, particularly for LOX service where any hydrocarbon exposure would require thorough cleaning and requalification before reuse.

What should I inspect on a used pump before buying?

Check the mechanical seal faces or packing for scoring and wear, rotate the shaft by hand to feel for bearing roughness or binding, and inspect the motor windings for moisture intrusion if it's been in cold service. Examine both ICPV200 pressure vessels for current hydro dates and any visible frost damage or insulation deterioration, and verify all instrumentation and relief valves are present. Request documentation of the last operating parameters and any maintenance records, particularly seal or bearing replacements.