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The Planet

Elevate Steam Boiler Longevity & Efficiency With ZESTOS

INNOVATIVE PATENTED

Eliminates corrosive dissolved O2 & CO2

ZESTOS significantly extends boiler operating life by eliminating corrosive dissolved oxygen and carbon dioxide in the feedwater.

Feed boiling water to the boiler

Feeding boiling water minimizes thermal shock and enhances steam quality, making it hotter and more efficient. Consequently, equipment utilizing steam will operate more effectively.

Save Money and The Planet

This innovative approach to waste heat utilization can help save money and protect the planet. Improved reliability comes from reduced equipment stress and reduced risk of failure. Additionally, boiling water with waste heat reduces energy use and reduces the need for water treatment chemicals by up to 90%. When chemicals are reduced by 90%, steam quality becomes even better. The purer the water, the hotter the steam.

Steam Boiler Damage: 3 Key Factors and Solutions

Hardness:

Hardness: Excessive minerals dissolved in water can increase water hardness, leading to scale deposits on the boiler’s surfaces. Even a scale layer as thin as 1/8 inch can reduce boiler efficiency by up to 25%. These scales act as insulators, hindering heat transfer and increasing fuel consumption. Additionally, scale deposits can cause local overheating and potential failure of boiler metals. Fortunately, this issue can be easily addressed with a water softener, and those in areas with naturally soft water are even luckier.

Corrosion:

Dissolved Oxygen (O2) and Carbon Dioxide (CO2) pose a greater risk as they silently corrode the boiler from the inside out. Oxygen is the main culprit, corroding the boiler metal up to ten times faster than CO2. When both gases are present, the corrosion rate can accelerate by 40 times, significantly shortening the boiler’s lifespan.

O2 & CO2 Removal Methods:

Deaerators: While capable of completely removing dissolved oxygen & Carbon Dioxide, they are expensive and large.

Preheated return tanks: Utilize boiler steam to preheat the return tank, reducing O2 & CO2 solubility.

Oxygen scavenger chemicals: Help reduce oxygen only but are not perfect. Moisture can be transported by steam.

ZESTOS Solution:

ZESTOS is a patented boiler return system that dramatically extending boiler life.

Eliminates dissolved oxygen and carbon dioxide.

Stronger feed water is supplied by boiling.

The system withstands Grundfos multi-stage pumps and up to 248°F.

Our microchips finely control water to prevent wasting water.

Saving money and the planet with ZESTOS. Protect your boiler and the environment by reusing       as much wasted steam heat as possible.

Conclusion:

By understanding the key causes of steam boiler damage and implementing effective preventive measures like water softening, oxygen removal, and ZESTOS technology, you can ensure optimal boiler performance, longevity, and environmental sustainability.

Oxygen eliminate method & System

  • ZESTOS Return System
  • Eliminates O2 & Co2
  • O2 Under 150 psi boiler recommend 0.05 ppm
    X 0 ~ 500%
  • Energy source: Reuse of waste steam heat
  • Keep hot water overnight, Boiler presses up quickly

  • Steam Quality (Hotter)
    * * * *
  • Price
    $$+
  • Microchips finely water level control, prevent wasting water
  • Grundfos multi-stage pumps rated up to 248°F
  • Boiler room dry, 90% no need chamical
  • Regular Return Tank
  • Eliminates O2 & Co2
  • O2 Under 150 psi boiler recommend 0.05 ppm
    X 6000 ~ 15000%
  • Energy source: most steam waste the vent
  • After a few hours of cold water, the boiler starts cold.
  • Steam Quality (Hotter)
    *
  • Price
    $
  • Float valve water level control

  • 1 Impeller pump can be used up to 180°F
  • Boiler room moisture, need more chamical
  • Preheated Return Tank
  • Eliminates O2 & Co2
  • O2 Under 150 psi boiler recommend 0.05 ppm
    X 2000 ~ 4000 %
  • Energy source: Return & Live steam input
  • After a few hours of cold water, the boiler starts cold.
  • Steam Quality (Hotter)
    * *
  • Price
    $$
  • Float valve or Electric water level control
  • 1 Impeller pump can be used up to 180°F
  • Uses more energy
  • Deaerator
  • Eliminates O2 & Co2
  • O2 Under 150 psi boiler recommend 0.05 ppm
    X 0 ~ 200%
  • Energy source: Return & Live steam input

  • After a few hours of cold water, the boiler starts cold.
  • Steam Quality (Hotter)
    * * * *
  • Price
    $ $ $ $ $ $ $ $ $ $
  • Electric water level control
  • Multi-stage pumps rated up to 248°F
  • Boiler room dry, Uses more energy
  • Treatment Chemical
  • Eliminates O2 & Co2
  • Help Low O2
  • Energy source: Reuse of waste steam heat
  • Keep hot water overnight, Boiler presses up quickly

  • Steam Quality (Hotter)
    * * * *
  • Price
    $$+
  • Microchips finely water level control, prevent wasting water
  • Grundfos multi-stage pumps rated up to 248°F
  • Capable of transporting moisture with steam

ZESTOS  Feed System       vs      Steam Boiler Return Tank

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Inside Steam Boiler : ZESTOS  System User       vs      Regular Boiler Return Tank User

Summary: Patented US10364979B2

An apparatus and method for recovery of waste heat in a boiler system, wherein heat from the low pressure steam in a feed water tank, which otherwise would be lost through dissipation, is used for other applications. Particularly, waste heat energy recovered in the form of low pressure steam can be used to heat make-up water for the boiler system.

What our customer say

The Zestos boiler water feed tank was the best investment I ever made.

It displays the water temperature, and has a high performing pump.

The motor runs well and has been helping me save gas and water.

Zestos Tank I installed about a year ago and I am glad I did it runs my boilers very efficiently and I always have steam at high volumes and very energy efficient which brought down my utility cost also.

I’m the manager at Dry Clean X Press and after instaling the return tank from ZESTOS I don’t have the recuring problems from my boilerblime befor and everything is running smoothly. This has been a great investment and we are very satisfied.

We are Modu food Service located in Vernon and recently, we’ve purchased and installed ZESTOS feed tank. With their advice we’ve also replaced our boiler with two smaller ones that provided enough steam for our needs, which saved us a lot on energy bill. So far our boilers run smoothly and very efficiently without any issue. Consulting/estimation/installation all went without an issue and we are very satisfied with the investment.