Automatic brass drain valve for underfloor heating with 1" DN25 and 1/2" DN15 for reliable maintenance of the heating circuit

Complete distribution solution: This automatic drain device assembly contains an automatic drainer, a distributor adapter and a drain ball valve designed for circuit distributors; Two brass water distributors are supplied for multi-circuit installations and immediate use. Airless heating performance: The built-in automatic vent extracts microbubbles and trapped air to improve circulation in underfloor heating systems, promoting more stable heat distribution and quieter operation. Brass design: The robust brass construction and precision fittings provide high strength and a reliable seal for long-term service in heating and plumbing systems. Convenient maintenance: The quick-drain valve allows for system flushing and water removal during maintenance, helping to prevent silt buildup and reducing maintenance. [Double-check sizes] Verify the DN25 2.5 cm and DN15 1.27 cm connection sizes against your own system measurements and drawings. Please refer to your own size chart, not Amazon's.