HW 25L diaphragm DHW vessel is a steel tank - powder coated on the outside. Diaphragm with special mounting system to minimize the possibility of leakage at the connection of the flange with the tank. Special membrane mounting system to minimize the possibility of leakage at the flange-tank connection to the tank. The small size of the tank, allows it to easily fit into utility rooms or bathrooms with a small area. An additional advantage of the product is that the parts in contact with water are specially protected against corrosion. The tank will be durable and will retain its properties for a long time.