CCH Custom Build 54K High-Pressure Vaporizer — 54,000 LB 700 PSIG

Is this sized for my peak demand or my average?

High-pressure vaporizers are typically sized for peak demand, not average flow, since they feed critical process or backup systems that must meet instantaneous load. This unit is rated for 54,000 LB capacity at 700 PSIG, but the listing does not specify whether this is nameplate capacity under standard conditions or a derated value. Ask the seller for the original dataplate specifications and any performance curves showing capacity versus inlet temperature and pressure.

What gases can it be put into service with, given what it ran before?

The listing does not state what gas this vaporizer previously handled. High-pressure aluminum vaporizers are commonly used for oxygen, nitrogen, or argon, but prior oxygen service typically requires the unit remain dedicated to oxygen due to cleaning protocol costs and contamination risk. Request documented service history from the seller before committing to a different gas, particularly if converting to or from oxygen service.

What are the installation and utility requirements?

This unit measures 185" x 75" x 98.5" with a 1-1/2" x 2" Class 300 RF flange connection and is listed without a skid, so you will need to provide mounting infrastructure. Ambient vaporizers of this type require only adequate airflow and clearance for natural convection—no external utilities—but may need forced air or water bath augmentation in high-duty cycles or cold climates. The listing does not include weight or wind load data; request those figures and any foundation drawings from the seller.

What should I inspect on a used vaporizer before buying?

The listing notes inspection status was incomplete at time of listing, so you should arrange your own assessment. Focus on fin-to-tube bond integrity (look for separation, corrosion, or impact damage to aluminum fins), check all welds and flange faces for cracks or pitting, and verify the unit holds pressure at the rated 700 PSIG. Request any prior hydrostatic test records and confirm the nameplate and serial number are legible for traceability.