Plastic hot water boiler

A plastic hot water boiler, comprising:

• a body, the body made of heat-resistant plastic;
• wherein a composition of plastic of the body includes stable isotopes of an element composing the plastic;
• at least two electrodes mounted inside the body;
• wherein each electrode has an electric lead;
• wherein the electric lead is located on one end of each electrode, and electric leads of the electrodes are placed outside of the body;
• wherein the electrodes along with leads are replaceable;
• wherein connection of the electrode with electrical lead is detachable,
• and each electrode is configured to connect to the electric lead at any end of the electrode,
• wherein the body has through inlet and outlet nozzles,
• wherein the body is made of plastic with a predetermined coefficient of thermal expansion, and the predetermined coefficient corresponds to a coefficient of thermal expansion of electrodes, and
• the body has at least one flat face, the flat face pass through a symmetry axis of a cross section of the body,
• two caps are installed on an upper and a lower part of the body;
• the caps are mounted over the leads of the electrodes,
• each cap of the two caps is fixed to an upper or lower surface of the body via at least one rack formed as a boss,
• a fixation of the each cap of the two caps to the body is done by a bolt, which passes through an opening in a top surface of the cap and is wrapped into the rack,
• the each cap contains, on an upper surface of the each cap, an opening provided with a cap nozzle, through which electric wires pass from leads of the electrodes,
• water filled inside the body above is heated by current through the electrodes.