Brass Check Valve For Zero Cold Water Heater

1. Customized for DUNYUN Zero-Cold Water Working Conditions, Prevents Backflow: Specially designed for DUNYUN zero-cold water heater systems, it accurately blocks backflow in hot water pipelines, prevents mixing of cold and hot water, avoids frequent start-stop of the water heater and dry burning of the heating tube, and ensures the stable realization of the core instant hot water function of the zero-cold water system.

2. Heat & Pressure Resistant, Anti-Aging, Adaptable to All Water Heater Working Conditions: The DUNYUN check valve body is made of high-quality brass/high-temperature resistant engineering plastic, which can withstand 80-95℃ high-temperature hot water for a long time and has pressure resistance matching the conventional pressure of household hot water systems. It is resistant to scale corrosion and aging, not easy to rust or deform in humid environments, and features a long service life.

3. Low Flow Resistance Design, No Impact on Hot Water Circulation: With optimized spool and bore structure, the smooth flow channel has no throttling and low water flow resistance. DUNYUN check valve does not reduce the head of the circulating pump in the zero-cold water system or affect the hot water delivery speed, ensuring fast whole-house hot water circulation and instant hot water supply.