The Caleffi Pressure Reducing Valve 535040 DN15 is a high-quality brass valve designed for hydronic heating systems, specifically for use with storage tank water heaters. It is suitable for indoor mounting and has a power source of 240V with an amperage of 40A. This valve is energy-efficient, with an A energy efficiency rating and a first hour recovery rate of 204 litres per hour. The compact size of 4 inches in width makes it easy to install in various heating systems, providing reliable performance for optimal heating efficiency.

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