Radiator Cap Pressure Relief Valve

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Radiator cap pressure relief valve.

Always use a cap of the correct pressure for your cooling system. Unchecked high pressure could cause damage to the radiator heater core hoses or water pump seal. Free shipping on your first order shipped by amazon. Too much pressure can cause damage while not enough pressure can cause the engine to overheat.

As the vacuum continues to build up the two way check valve which is exactly what a radiator pressure cap is goes to work. Usually this is set at a density of 15 pounds per square inch psi. Air causes poor engine cooling and is the main cause of cooling system component corrosion. When the fluid pressure inside the radiator exceeds 15 psi it forces the valve open allowing heat to escape and excess coolant fluid to overflow into the tanks on either side of the radiator.

The pressure relief valve spring is compressed against the lower seal when you lock the cap. The pressure cap also prevents radiator hoses and tanks from collapsing. If there were not a radiator pressure cap installed the system would draw in air. The aluminum t bucket radiator does not use a conventional pressure radiator cap rather it uses the decorative t caps to seal the neck at the top of the radiator.

Free shipping on orders over 25 shipped by amazon. This valve allows for contraction as the fluid cools. As the engine cools it causes a vacuum in the cooling. They will prevent excessive pressure.

The radiator cap acts as a release valve set to open at the maximum pressure point. Get it as soon as tue jun 30. Where to find the pressure rating. Varivalve 925005 00 angle vari valve heat timer 4 2 out of 5 stars 180.

The radiator filler neck has an overflow tube right between the two sealing surfaces. Locate the system s pressure rating on the top of the cap. Test the cap with a radiator pressure tester and a special adapter. This valve is used with speedway s aluminum t bucket radiator 91015600.

The top portion of the radiator cap will list the pressure rating. The arrow on the valve indicates the flow. Get it as soon as fri sep 25. Radiator caps also serve as pressure relief valves.

The cap acts as a pressure relief valve. If an individual expansion tank is installed which is mostly the case today the expansion tank cap is equally important. More buying choices 15 29 8 used new offers. If the cap s spring is weak it is.

Amazon s choice for radiator pressure valve. The vacuum valve opens and allows coolant to flow from the overflow tank back into the radiator. Save more with subscribe save. It threads into a 1 4 npt hole in the top radiator tank and it limits the pressure in the radiator to 15 psi.

The radiator cap is a very important part of the engine s cooling system yet it is often overlooked when troubleshooting the system.