Safety group 889 3/4" (20x27) straight NF with drain trap

The hydraulic safety unit protects the hot water generator against the risk of bursting It allows water to be evacuated, following its expansion during heating, which avoids any overpressure in the water heater Made in France 5-year warranty For vertical electric water heaters Note Too much pressure in the system, they need to check their plumbing (not product, as a drop is normal on a security group). Also check that the valve is closed (big red button). If necessary, add a pressure reducer to the installation to avoid the drip problem Incorrect use of the valve (red button) which is then in the "open" position, incorrect adjustment of the upstream installation (too much pressure on the network), Manufacturer: COMAP