Radiator Cap Pressure Relief Valve

Test the cap with a radiator pressure tester and a special adapter.

Radiator cap pressure relief valve.

The pressure relief valve spring is compressed against the lower seal when you lock the cap. The radiator cap acts as a release valve set to open at the maximum pressure point. High pressure radiator cap. The cap acts as a pressure relief valve.

Get it as soon as fri sep 25. Car auto water diesel tank radiator cap with pressure relief 9c3z8101b fit for ford f150 2003 lincoln mercury duty 16psi. If there were not a radiator pressure cap installed the system would draw in air. Radiator caps also serve as pressure relief valves.

More buying choices 15 29 8 used new offers. The vacuum valve opens and allows coolant to flow from the overflow tank back into the radiator. This valve is used with speedway s aluminum t bucket radiator 91015600. Locate the system s pressure rating on the top of the cap.

Always use a cap of the correct pressure for your cooling system. The top portion of the radiator cap will list the pressure rating. Air causes poor engine cooling and is the main cause of cooling system component corrosion. If an individual expansion tank is installed which is mostly the case today the expansion tank cap is equally important.

Free shipping on orders over 25 shipped by amazon. The radiator cap is a very important part of the engine s cooling system yet it is often overlooked when troubleshooting the system. Too much pressure can cause damage while not enough pressure can cause the engine to overheat. They will prevent excessive pressure.

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. As the engine cools it causes a vacuum in the cooling. Varivalve 925005 00 angle vari valve heat timer 4 2 out of 5 stars 180. The pressure cap also prevents radiator hoses and tanks from collapsing.

As the vacuum continues to build up the two way check valve which is exactly what a radiator pressure cap is goes to work. Amazon s choice for radiator pressure valve. The arrow on the valve indicates the flow. Only 13 left in stock order soon.

Get it as soon as tue jun 30. 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. 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 filler neck has an overflow tube right between the two sealing surfaces. Usually this is set at a density of 15 pounds per square inch psi. If the cap s spring is weak it is. This valve allows for contraction as the fluid cools.

Where to find the pressure rating.