ACD 50 mm Complete Pump Skid — 15 GPM Cryogenic Pump

What flow and head is this rated for, and at what NPSH?

This skid is rated for 15 GPM capacity. Head pressure and NPSH requirements are not specified in the listing; you'll need to request the ACD model-specific performance curve and datasheet from the seller to determine discharge head at rated flow and the minimum net positive suction head required for cryogenic service.

What seals, materials and drive does it have?

The unit includes wax seal components and 2-stage globe valves, with a 75 hp 460V motor drive. Wetted materials of construction are not specified; request documentation confirming compatibility with your intended service, particularly if switching between oxygen (which requires special cleaning) and hydrocarbon service like LNG.

What should I inspect on a used pump before buying?

On cryogenic pumps, check for thermal cracking in the cold box insulation jacket, examine the wax seal assembly for erosion or contamination, and inspect valve seats for leakage that would compromise vacuum integrity. Since operational status is unconfirmed, plan for seal replacement and a witnessed hydrostatic or pneumatic test of the pump casing, and verify the motor windings and bearings if it's been stored rather than run regularly.