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What to do about excessive pressure in coolant system?

What to do about excessive pressure in coolant system?

No pressure on top hose. Removed thermostat and ran engine and topped off radiator. No more problems so far with air lock, but need heat since it is winter. Put thermostat in a pot of boiling water, 212 Degrees, and thermostat opens as it should.

What happens when the coolant reservoir is full?

And, this valve must release excess pressure when hot to allow hot coolant to flow into the res. If the system is absolutely full of coolant the expanding coolant will automatically flow into the reservoir as it is supposed to do. Is the reservoir full or empty after sitting overnight?

What happens when you remove the expansion tank cap?

When removing the expansion tank cap, the system lets out pressure and the coolant floods back into the expansion bottle through the large hose located at the bottom of the tank. Surely when the engine is cold there should be no pressure in the coolant system?

What are the settings on a pressure tank?

The pressure switch setting is the pressure at which the pump turns on to fill the tank up, and the pressure at which the pump shuts off, knowing the tank is full. The three pressure switch settings for pressure tanks are 20/40, 30/50, and 40/60.

How long should a water pressure tank last?

First, the quality of the pressure tank itself. Cheaper pressure tanks will last 5 years, while high quality pressure tanks could last up to 30 years. If the water is clean and the tank is properly sized it should be lasting an average of 15 years.

How does a pressure tank in a well work?

How does a well pressure tank work? A well pressure tank uses compressed air to push pressurized water out of the tank and into your home. Pressure tanks have a diaphragm, also called a bladder, that separates a chamber of air from the water. As the tank fills with water, it compresses the air chamber.

What does the drawdown on a pressure tank mean?

What is pressure tank drawdown? Drawdown is the amount of stored water available in the pressure tank between the pump turning on and off. As water comes out of the tank, the pressure of the tank decreases. If you are using a 30/50 pressure switch, the pressure will continue to drop down until it reaches 30psi.

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Ruth Doyle