General description Our set of 2 automatic DN15 drain valves is designed specifically for solar water heaters. Made from high-quality brass, these valves feature a reliable and stable drain mechanism, ensuring efficient operation even under high pressure conditions. Technical specifications Material: High-quality brass Dimensions: 68.8 x 45 mm Pressure level: PN1.6 Usage Automatically flushes when there is a pressure difference between the inside and outside of the system. Extracts excess air during the operation of the exhaust system and HVAC system. High temperature resistance and rust protection. Other information Includes 2 automatic heating vent valves with DN15 thread. Designed to prevent water flow during the discharge process using a steam and water separation bowl. Easy disassembly and repair without the need to drain the system.