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This Woltmann flanged hot water meter is 4 inches in diameter and 250mm in length and represents an ideal plumbing solution for commercial and industrial use. It measures high flow rates with a steady flow rate profile. WRAS approved, it ensures reliable performance. The meter is robustly constructed, offering long-term stability and certified accuracy. Suitable for hot water metering, measuring, and billing, it covers a wide range with precision, giving you accurate readings and peace of mind.. Woltmann Hot Water Meter WRAS Approved - DN100 4 inch JTM WDE-K50/100WH