Radiator Cap Pressure Relief Valve

Both the pressure relief and vacuum relief valve must be easy to lift and spring.

Radiator cap pressure relief valve.

Only 13 left in stock order soon. Save more with subscribe save. The vacuum valve opens and allows coolant to flow from the overflow tank back into the radiator. Radiator caps also serve as pressure relief valves.

Always use a cap of the correct pressure for your cooling system. If the cap s spring is weak it is. The top portion of the radiator cap will list the pressure rating. As the vacuum continues to build up the two way check valve which is exactly what a radiator pressure cap is goes to work.

The radiator filler neck has an overflow tube right between the two sealing surfaces. 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 arrow on the valve indicates the flow. Free shipping on orders over 25 shipped by amazon.

Get it as soon as fri sep 25. Usually this is set at a density of 15 pounds per square inch psi. They will prevent excessive pressure. The radiator cap is a very important part of the engine s cooling system yet it is often overlooked when troubleshooting the system.

It threads into a 1 4 npt hole in the top radiator tank and it limits the pressure in the radiator to 15 psi. Air causes poor engine cooling and is the main cause of cooling system component corrosion. Too much pressure can cause damage while not enough pressure can cause the engine to overheat. Free shipping on your first order shipped by amazon.

Unchecked high pressure could cause damage to the radiator heater core hoses or water pump seal. 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. The pressure cap also prevents radiator hoses and tanks from collapsing. High pressure radiator cap.

More buying choices 15 29 8 used new offers. Varivalve 925005 00 angle vari valve heat timer 4 2 out of 5 stars 180. If an individual expansion tank is installed which is mostly the case today the expansion tank cap is equally important. This valve is used with speedway s aluminum t bucket radiator 91015600.

The radiator cap acts as a release valve set to open at the maximum pressure point. As the engine cools it causes a vacuum in the cooling. The cap acts as a pressure relief valve. Car auto water diesel tank radiator cap with pressure relief 9c3z8101b fit for ford f150 2003 lincoln mercury duty 16psi.

Where to find the pressure rating. This valve allows for contraction as the fluid cools. If there were not a radiator pressure cap installed the system would draw in air. The pressure relief valve spring is compressed against the lower seal when you lock the cap.

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