What Is a Safety Release Radiator Cap

MotoRad safety lever radiator caps utilize a lever that locks the cap to the filler neck requiring the lever be lifted before removal. When the lever is lifted, the valve pressurizing in the cooling system is opened and pressure is vented through the overflow tube making it safe to remove the radiator cap.

What temp is safe to open radiator cap?

Don’t open the radiator cap until it is cool Note that an overheated engine may have a coolant that is as hot as 260 Fahrenheit. Inside the system is sealed. Unfortunately, once it is exposed to air, it will boil and can cause severe burns to you. Wait until the system has completely cooled.

Do radiators have relief valves?

A radiator pressure relief valve is disclosed for transferring fluid from a radiator to an overflow bottle to relieve pressure in the radiator.