Zilmet Calpro
Zilmet Calpro

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CAL-PRO Vessels

Zilmet CAL-PRO expansion vessels are designed for domestic and commercial unvented heating systems, absorbing changes in water volume as the system heats and cools. Available in capacities from 4 to 900 litres, they help maintain stable system pressure.

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  • Description

    The Zilmet CAL-PRO range of expansion vessels is designed to accommodate the increase in water volume that occurs as a closed heating system heats up. The pressurised membrane allows water to enter and leave the vessel as the system temperature changes, helping to maintain consistent system pressure.

    CAL-PRO expansion vessels are suitable for both domestic and commercial unvented central heating systems and are available in a wide range of capacities to suit different system requirements.

    The vessels feature carbon steel shells with a durable epoxy polyester exterior coating. The synthetic SBR rubber membrane is manufactured in accordance with DIN 4807-3 and is designed to provide effective water storage and drawdown performance.

  • Applications

    Zilmet CAL-PRO expansion vessels are suitable for:

    • Domestic unvented central heating systems
    • Commercial unvented heating systems
    • Closed heating systems
    • Hydronic heating applications
  • Features
    • Designed for domestic and commercial heating systems
    • Pressurised membrane for absorbing water volume changes
    • Synthetic SBR rubber membrane
    • Manufactured to DIN 4807-3
    • Crimped or welded carbon steel shell
    • Long-lasting epoxy polyester exterior coating
    • Available in capacities from 4 to 900 litres
  • Materials

    Shell: Crimped or welded carbon steel
    Membrane: Synthetic SBR rubber to DIN 4807-3
    Exterior coating: Epoxy polyester

     

  • Downloads

    Simply click below to download the file:

    Zilmet Calpro Operating Instructions

Why Choose a CAL-PRO expansion vessel?

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Heating Systems

Designed specifically for domestic and commercial unvented central heating systems.

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Stable Pressure

Absorbs water volume changes as the system heats and cools to help maintain pressure.

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Wide Capacity Range

Available from 4 to 900 litres for a range of heating system requirements.

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Durable Shell

Crimped or welded carbon steel construction provides a robust vessel design.

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Long-Lasting Finish

Epoxy polyester exterior coating provides durable protection.

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SBR Membrane

Synthetic SBR rubber manufactured to DIN 4807-3 for dependable performance.

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