Thermax SP 2000-BB — 2,000,000 L Water Bath Vaporizer

What utilities and footprint does this unit need on site?

This unit measures 72" OD x 414" LG, so plan for roughly 6 feet diameter and 34.5 feet length plus clearance for piping and access. Water bath vaporizers typically require a heat source (steam, hot water loop, or fired burner), makeup water supply, and electrical service for controls and circulation pumps. For a 2,000,000 liter capacity unit, confirm heat source capacity requirements and winterization needs with the seller.

When does a water bath unit make more sense than ambient or electric?

Water bath vaporizers maintain steady output regardless of ambient temperature, making them preferred where climate swings would derate ambient units or where continuous high-flow operation is required. They handle higher capacities more economically than electric and can use waste heat or low-cost steam where available. Ambient units work well for intermittent duty in warm climates; electric suits clean indoor installations with modest flow rates.

What maintenance does the bath and heat source require?

Water bath systems require regular water treatment to prevent scale buildup on coils, periodic inspection of the coil bundle for corrosion or leaks, and burner or steam system maintenance depending on heat source type. Antifreeze concentration must be verified before winter in freeze-prone climates, and relief valves and safety interlocks require annual testing. Confirm the heat source configuration on this unit, as the listing does not specify whether it is fired, steam-heated, or hot water.

What should I inspect on a used water bath vaporizer before buying?

Inspect the coil bundle for signs of corrosion, freeze damage, or leaks; verify the vessel pressure rating matches your service and check for current or expired certification. This unit was inspected but not fully commissioned, so confirm operational testing records and whether any commissioning gaps remain. Check bath liner condition, heat source function, and all instrumentation, and request documentation of previous service gas to assess compatibility with your application.