TC34 1x2x6-2VSL LIN,LAR,LNG

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

This pump is rated for 70 GPM at 204 PSIG discharge pressure with a suction pressure of 10 PSIG (maximum suction pressure 50 PSIG). The listing does not specify NPSH required or available—ask the seller for the pump curve showing flow, head, and NPSH characteristics at the 5950 RPM operating speed. Submersible cryogenic pumps typically have low NPSH requirements due to their installation below liquid level, but the actual value depends on impeller design and operating point.

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

This unit previously operated in LIN (liquid nitrogen), LAR (liquid argon), and LNG (liquid natural gas) service. The listing does not provide total running hours or service history—ask the seller for operating logs, maintenance records, and whether it was in continuous or intermittent duty.

What should I inspect on a used pump before buying?

Inspect motor windings for moisture intrusion or insulation breakdown (particularly critical given the 0°C maximum ambient rating and cryogenic service), check shaft runout and bearing condition, and examine all seals for deterioration or leakage history. Verify the impeller for erosion or cavitation damage, confirm the discharge head is compatible with your system requirements, and request witness testing at operating temperature if possible. On units that handled LNG, check for any documentation of thermal cycling history and pressure testing to code.