Provides hygienic water storage
The stainless steel shell lets domestic water be held under hygienic conditions for extended periods; it meets the water quality requirements of hotels, hospitals and food facilities.
Product group · Pressure Vessels
Stainless Steel Calorifiers
Stainless steel calorifiers are preferred for hotels, hospitals, food facilities and residential projects where domestic water must be stored under hygienic conditions. The corrosion-resistant AISI 304 or 316 grade shell eliminates scale- and rust-related water quality problems; we supply them with or without a coil, across a wide volume range.
ShellAISI 304 / 316 stainless
Volume150 – 3000 L
Operating pressure6 – 10 bar
CoilWith / without coil
Why it matters
What does a stainless steel calorifier do?
The standard solution for facilities where domestic water must be stored under hygienic conditions and water quality is critical.
Built to AISI 304/316 standards
The grade is selected based on water hardness and chloride content; for projects requiring certification, it is supplied together with a material certificate.
Long service life against corrosion and scale
Unlike enamel coating, the interior surface does not wear over time; it gives many years of service without corrosion risk, even in hard water.
With or without a coil
Supplied with a coil or as a plain storage tank, depending on whether the heat source feeds through the inside of the calorifier or through an external exchanger.
Types
Sub-types of stainless steel calorifiers
All three are built with a stainless steel shell; what sets them apart is the material grade and coil configuration.
AISI 304 stainless steel calorifier
A stainless solution with a good cost-performance balance, preferred on lines with standard water quality and moderate chloride content.
- Standard water quality
- Economical stainless solution
- Hotel/residential projects
AISI 316 stainless steel calorifier
Thanks to its molybdenum content, it withstands chloride-bearing water and aggressive water chemistry better; preferred in hospitals and food facilities.
- High chloride resistance
- Suited to hospitals/food facilities
- Long service life
Coilless stainless steel storage tank
When the heat source is supplied through an external exchanger, the calorifier serves only as storage; preferred in large-volume central systems.
- Works with an external exchanger
- Large volume options
- Suited to central systems
Selection criteria
What data determines the right stainless steel calorifier?
Selection cannot be made without the first two items. The rest determine the material grade and fittings.
ParameterWhy it mattersWhat we need from you
Volume
Calculated from the number of simultaneous users and consumption habits.
L
Water quality (chloride content)
AISI 316 is needed for high-chloride water.
304 / 316
With or without a coil
Whether the heat source feeds through the inside of the calorifier or through an external exchanger.
With coil / without coil
Number of heat sources
Single or two different sources (on coil models).
1 / 2 sources
Operating pressure
Must match the mains or booster-pump supply pressure.
bar
Connection size and installation location
Inlet/outlet and coil connection sizes, and the boiler room layout.
DN size + installation clearance
For a quote, having the following is enough
It's fine if you don't have all of it. We'll fill in the gaps together with you.
Create a quote request- Number of simultaneous users, or the volume you need
- Water quality/chloride content (for the 304/316 choice)
- Whether a coil is wanted or not
- Number of heat sources
- Operating pressure
- The existing calorifier's nameplate data (if replacing one)
FAQ
Questions from the field
The questions we hear most often when quoting stainless steel calorifiers.
What is the difference between AISI 304 and 316?
Thanks to its molybdenum content, 316 is more resistant to chloride-bearing water and aggressive water chemistry than 304; 316 is recommended for high-chloride mains water or coastal installations.
What is the advantage over an enamel calorifier?
Enamel coating can crack and wear over time and needs anode protection; a stainless steel shell resists corrosion for many years without that maintenance.
When is a coilless model preferred?
When the heat source is supplied through an external plate heat exchanger, the calorifier only serves as storage; this layout is more flexible in large-volume central systems.
Is a hygiene certificate required?
In food and pharmaceutical facilities, compliance with hygiene principles such as EHEDG/3-A may be required depending on the project; material and surface finish are chosen accordingly.
Do you only serve Istanbul?
No. While our office is on Istanbul's Anatolian side (Ataşehir), we supply and ship across Istanbul's European side, the surrounding provinces and the Marmara region, and Turkey as a whole — covering your equipment end to end, from a single source.
Next step
Let's clarify your needs together
Share your volume needs and your water quality, and let's determine the right stainless steel calorifier for your facility together.
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