The DU144 valve has a simple adjustment mechanism that increases water flow automatically according to the water pressure across it. As rooms approach design temperatures and devices such as TRVs start to close, the DU144 opens proportionally to enable a safe water flow around the boiler. When valves open again, it closes to maximise flow to the heating circuits.
The efficiency of the heating system is improved compared with a fixed bypass system. This valve is suitable for all heating system with static pressures up to 6 bar and flows up to 50 l/min.
