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Buffer tanks & buffer vessels 

At Lorivan, we design and manufacture buffer tanks in stainless steel or coated steel. These stratified buffer tanks are used to store hot water, cold water, chilled water or domestic hot water. Made in Belgium, built on expertise.

  • Made in Belgium
  • PED-compliant
  • Custom CAD design
buffertank inox
buffertank
Technical info

Buffer tanks in stainless steel or coated steel

Available finishes for our buffer tanks:

  • Exterior shot-blasted and painted
  • Hot-dip galvanized inside and out, to EN 1461
  • Exterior polyethylene (PE) coating, highly resistant
  • Exterior HTPER high-temperature polyester powder coating (180 °C)
  • Interior two-component epoxy coating (from Ø900 mm), selected according to the application
  • Stainless steel 304 or 316L

Buffer tanks for sanitary applications are made of 316L stainless steel. These stainless steel pressure tanks for domestic hot water (DHW) are fully pickled and passivated, with a 2B surface finish.

We can also insulate the buffer tanks with:

  • Vapour-tight Armaflex insulation, with or without stucco aluminium cladding
  • Insulation made of soft polyurethane (PUR), finished with a removable PVC cover with zipper.
  • Glass wool or Rockwool, with stucco aluminium cladding
  • Easily removable insulation mats filled with glass wool
  • ...
buffertank steelplex groen

Insulation options
buffer tanks

The right insulation depends on the environment, setup and desired energy efficiency. That is why we equip buffer tanks with a custom insulation solution, such as:

  • Armaflex
  • PUR with PVC sheath
  • glass wool or Rockwool with aluminum finish
  • removable insulation mats
buffertanks

Hydraulic separators
 

Lorivan also builds hydraulic separators (low-loss headers) for heating and cooling systems, designed to the customer's specifications and sizing. They help solve pressure and flow issues, hydraulically decouple circuits and can also act as an air separator or dirt separator.

About us

Why Lorivan

Lorivan combines Belgian production with technical know-how and a practical approach. You work directly with a manufacturer from Roeselare who thinks along with you, finishes everything properly, and delivers what is technically needed. From a single piece to a small series.

Production in Belgium 

Flexibility in design and execution 

Fast delivery times

Focus on safety and compliance

F. A. Q. About buffer tanks

What is the difference between a buffer tank and an expansion vessel?

A buffer tank is used to temporarily store energy or volume and to stabilize the operation of the system. An expansion vessel accommodates volume changes caused by temperature fluctuations.  

Can I choose between stainless steel and coated steel?

Yes. We will look together at which material choice best suits the medium, the environment and the technical requirements.  

How big should my buffer tank be?

It depends on the application, the flow rate, the installation, and the desired buffering effect. We are happy to help you with the correct sizing.  

Is every tank PED-compliant?

Where required, we build in accordance with the PED directive and align the execution with the applicable standards.  

Can I place a buffer tank outside?

Yes, provided the right choice of materials, finish and insulation. We would be happy to advise you on that.

Products

Other products

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Ready to have your buffer tank built?

Tell us what your installation needs. We will develop a solution that is technically sound and practically feasible.