Zilmet Calpro
Zilmet Calpro

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Cal-Pro Vessels

The Zilmet CAL-PRO expansion vessels absorb the water volume variations in closed heating systems maintaining constant pressure, helping to reduce energy consumption.

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  • Description

    The purpose of these vessels is to accommodate the increased liquid volume which occurs during system heating in an Unvented Circuit. A pressurised membrane allows ingress/egress of the liquid only during periods of heating / cooling.

    The CAL-PRO range of Expansion Vessels is specifically designed for domestic and commercial unvented central heating systems.

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Designed for Domestic & Commercial Use

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Crimped or Welded Carbon Steel Shells

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Long-Lasting Epoxy Polyester

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Capacity From 4Ltr to 900 Ltr

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Pressurised Membrane

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Synthetic SBR Rubber to DIN 4807-3

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