26,000 SCFH 150 PSI Vaporizer Trailer

How do I size this vaporizer for my flow rate and duty cycle?

This unit is rated for 26,000 SCFH at 150 PSI. Ambient air vaporizers are typically sized at 1.5–2× your peak flow to allow for derating in cold weather and ice buildup during continuous duty; confirm your actual gas type, inlet temperature, and required outlet conditions with the seller to verify whether this unit meets your demand profile.

What happens to output in cold or humid conditions, and on continuous duty?

Ambient vaporizers lose capacity as ambient temperature drops, and frost buildup during continuous operation further reduces heat transfer—expect significant derate in sustained cold-weather duty compared to rated capacity at design conditions. High humidity accelerates frost formation, requiring more frequent defrost cycles or rotation to a backup unit. This listing does not specify the design ambient temperature or whether defrost provisions are installed; ask the seller for the original design basis and any historical performance data.

Can this be put into a different gas service than it previously ran?

This unit previously handled LNG, LIN, LOX, and LAR service. Switching between inert cryogens (nitrogen, argon) or from inert to fuel gas (LNG) is generally straightforward with proper cleaning and purging, but moving into oxygen service from a hydrocarbon or oil-contaminated system requires complete degreasing and oxygen cleaning to ASTM G93 or CGA standards. The aluminum alloy construction is compatible with these services, but verify the specific components and seals meet requirements for your intended gas and confirm no contamination history that would preclude oxygen use.

What should I inspect on a used ambient vaporizer before buying?

Check fin condition for corrosion, impact damage, and whether fins are bonded or mechanically loose; inspect all welds and brazed joints for cracks, particularly at headers and tube-to-header connections; and verify flange faces, gasket seating surfaces, and piping supports for damage or previous leak repair. On a trailer-mounted unit, also inspect the frame for structural cracks, verify axle and brake condition, check tire age and tread, and confirm lights and safety chain function. The listing states the 2000 Hudson HSE18 trailer was fully refurbished in December 2024, but does not provide detail on what was addressed; request documentation of the refurbishment scope and any pressure testing or leak checks performed on the vaporizer itself.