Safety valve for boiler with lever 1/2"

Safety valve with lever for boiler installation. The safety valve is 1/2 ”in size and is made of nickel for a long period of operation and high corrosion resistance.
The safety valve is also called a non-return valve. The task of this valve is twofold. On the one hand, it must stop the return of hot water from the boiler to the water supply, and on the other - to act as a mechanical protection against overheating of the boiler itself. When the water in the boiler overheats, the pressure is over-expanded and then the valve opens, releasing the pressure from the boiler to the outside in the form of drops or jets depending on the overload.