Close up of the Reliable 5100CJ 2.2L Jewelry Steam Cleaner with Eco Mode.

When it comes to professional-grade steam cleaning, what's inside the machine matters just as much as what comes out of it. That's why Reliable Steam Cleaners are built with a 100% stainless steel boiler, designed to deliver consistent, high-quality steam, day after day. But why stainless steel? And what makes it superior to Cast Iron in steam boiler construction?

 

Stainless Steel vs. Cast Iron: A Quick Comparison. Stainless Steel Tank: 1) Highly resistant to rust — even with tap water; 2) Can use tap or distilled water; 3) Low maintenance, longer service life; and 4) Long-lasting and ideal for daily, all-day use. Cast Iron Tank: 1) Prone to rust, especially with hard or tap water; 2) Required distilled water only to avoid corrosion; 3) Higher maintenance due to rust and scale buildup; and 4) Shorter lifespan; wears faster over time.
 Let's Break It Down

1.  Corrosion Resistance That Lasts 


 Cast Iron may be strong, but it doesn’t hold up well against moisture—especially when tap water or hard water is used. Over time, Cast Iron boilers are prone to rusting, which can lead to breakdowns, dirty steam, and expensive maintenance.

Stainless steel, on the other hand, is naturally resistant to corrosion, thanks to high levels of chromium, nickel, and molybdenum in its composition. The Reliable Steam Cleaner's Italian-made stainless steel tank is built to handle daily steam production—even with tap water—without degrading from the inside out.

 

2.   Tap Water or Distilled—Your Choice.

One of the biggest advantages of stainless steel boilers is water flexibility. While most steam cleaners with Cast Iron boilers require distilled water only, Reliable Steam Cleaners are designed to safely handle tap water. That means fewer operating costs, greater convenience, and no worries about premature rust or corrosion when using standard water.

 

3.   Hygienic by Nature

Steam cleaning is all about precision and cleanliness. Stainless steel is non-porous, easy to clean, and naturally resists bacterial buildup, making it a trusted material in medical, fine jewelry, and food-grade applications. 

 

Close up of the 5100CJ cleaning a ring and the 5100CD cleaning a dental mold.
4.  Built to Withstand the Heat

Steam inside the Reliable Steam Cleaner reaches temperatures of 105°C under 4.1 bars of pressure. With a stainless steel boiler, there’s no warping, cracking, or weakening over time. Stainless maintains its integrity under repeated heating and cooling cycles, ensuring reliable performance for years.

 

5.  Low Maintenance, High Performance

A properly constructed stainless steel boiler—like the one in Reliable Steam Cleaners—is practically maintenance-free. It doesn’t scale, pit, or flake like Cast Iron, which means fewer service calls and longer intervals between cleanings. And when maintenance is required, the Reliable Steam Cleaner includes a built-in blowdown valve for easy draining and cleaning.

 

Close up of the blowdown valve and pressure gauge on the 6000BU.
6.  Welded for Strength and Reliability 

Reliable Steam Cleaners are constructed from AISI 304 austenitic stainless steel—renowned for its excellent weldability and structural integrity. This ensures stronger, more durable seams that hold up under continuous pressure and high heat, delivering long-lasting performance you can count on.

 

7.  Long-Term Value 

While Cast Iron might offer a lower upfront cost, it often ends up costing more in the long run due to higher maintenance, shorter lifespan, and potential for contamination. Stainless steel is a more durable, long-lasting investment that delivers a lower total cost of ownership. 

 

8.  Polished, Professional Appearance 

Let’s not forget aesthetics. Stainless steel doesn’t just perform better—it looks better. Unlike Cast Iron, which can develop a dull, stained appearance over time, stainless steel maintains its polished, clean look—reflecting the quality and professionalism of your work. 

Why It Matters for You

 

Reliable Boilers aren’t just steam cleaners—they’re professional tools built for daily use. When reliability, hygiene, and long-term durability matter, stainless steel is the only choice. That’s why we build our steam cleaners the way we do—Made in Italy with an all-stainless steel boiler, backed by four layers of safety systems, and engineered to perform day in and day out.

Because when you rely on your equipment, you deserve a boiler that won’t let you down.