Zilmet Cal-Pro Vertical Expansion Vessel – 4 Bar – 12Ltr

Features

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

The broad range available meets the requirements of various heating systems.

Technical Information

• Crimped or welded carbon steel shells
• Synthetic SBR rubber according to DIN 4807-3 norms suitable for every capacity for maximising tank drawdown.
• Vessels are painted externally with long-lasting epoxy polyester

The Zilmet Cal-Pro Vertical Expansion Vessel protects your closed heating system by managing water volume variations caused by temperature changes. This 12-liter vessel maintains a constant system pressure, which effectively reduces energy consumption and prevents unnecessary stress on your boiler and pipework. Homeowners and engineers trust this unit to stabilize pressure while extending the overall life of the heating infrastructure.

Zilmet builds this vessel for maximum durability, using a shell made from high-grade crimped or welded carbon steel. The manufacturer applies a long-lasting epoxy polyester paint to the exterior to prevent corrosion even in demanding environments. Internally, the Zilmet Cal-Pro Vertical Expansion Vessel features a synthetic SBR rubber membrane that meets strict DIN 4807-3 standards. This high-quality membrane optimizes tank drawdown for consistent performance across various domestic heating applications.

This vertical-layout pressure vessel saves significant space, making it an ideal choice for residential installations. It operates at a 4 bar pressure rating and utilizes a standard 3/4 inch connection for broad compatibility with UK and European systems. With dimensions of 294mm in diameter and 281mm in height, this reliable Zilmet product includes a 1-year manufacturer warranty and qualifies for next-day delivery.

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