Model Number: LXF 15D 25D Brand Name: HOLLEY INTL Key Specifications/Special Features: All materials in contact with water, consciously selected by known resistance to corrosionCold water meter under current standard for lower than 30°C (T30), but LXS can be used safely in water temperature up to 50°C (T50)Rollers are hermetically sealed by special liquid do not touch with water which ensures clear reading in any operating conditions Impeller is only moving parts in contact with water permitting most reliableMechanical transmission movement with maximum reliabilityExtra inlet filter at inlet of meter body permits cleaning it without breaking metrological seal