Radiator Cap?
no, but check your tire pressure
pressure relief valve relief the excess pressure which is developed in the syatem, while pressure reducing valve reduces the pressure and supply it to the system.
The pressure relief valve in a hydraulic system is designed to prevent the system from becoming overpressurized by releasing excess pressure to maintain safe operating levels.
sounds like pressure relief valve if replacing the valve doesn't stop the leaking you may have to much pressure in your cooling system mainly a Head Gasket leak.
Your pressure relief valve may be leaking due to high pressure in the system or a faulty valve. To fix it, you can try adjusting the pressure settings or replacing the valve if it is damaged.
The water relief valve may be leaking due to high pressure in the water system or a faulty valve. To fix it, you can try adjusting the pressure in the system or replacing the valve if it is damaged.
Water may be dripping from the pressure relief valve due to excess pressure in the system, which causes the valve to release water to prevent damage or a potential explosion.
A pressure relief valve works by opening to release excess pressure in a system when it reaches a certain level, preventing damage or failure due to overpressure.
Your pressure relief valve may be dripping because there is excess pressure in the system that needs to be released. This could be due to a faulty valve, high water pressure, or a malfunctioning heating system. It is important to address this issue promptly to prevent further damage.
A thermal relief valve is a liquid-only relief due to expansion of a liquid with increased temperature.A safety valve relieves pressure due to a gas.It should be noted that "safety valve" is a general term which could refer to Pressure Relief Valves (PRVs) or Pressure Safety Valves (PSVs), terms which are used synonymously in some industries (such as the petroleum industry) to refer to all relief devices in general.
the pressure relief valve start to open at a set pressure and que flow capacity and lift increase as increase the pressure in the system, usually the overpressure rise a 10% above the set pressure. In a Surge relief valve the valve open 100% when the system rise the set pressure and the accumulation on the system it is less than 2%, ussually that valves do not change the fluid direction to handle height flow capacity. That valves prevent a liquid hammer, the standard PSV did not.
That would depend on which part of the system the RELIEF valve is located