What does a bad bypass valve do?

Mechanically blocking the boost bypass valve can mess up part throttle engine operation. Under normal conditions of intake vacuum, a closed bypass builds up heat in the supercharger, stressing it, and messes up fuel mileage and driveability.

How does supercharger bypass valve work?

During idling or part throttle non boost operation, the bypass valve is held “open” by engine vacuum (10″-22″Hg). This allows the compressed air in the supercharger to re-circulate or bypass to the inlet thereby lowering the temperature.

Where are the by pass valves on an RV water heater?

On two 2-valve systems, one valve is located at the cold-water inlet and the other valve is in the by-pass plumbing line. On 3-valve systems, one valve is at the cold-water inlet, one is at the hot water outlet, and the third one is in the by-pass plumbing line.

Do you need a bypass valve on a hot water heater?

If for some reason anti-freeze does enter the heater, you will need to flush it out completely before you can store more water for showering. Most RVs have this bypass installed. Some RVs have one, two or three bypass valves. Ensure that the valves on the cold and hot water line are turned perpendicular to the line.

How do you bypass a hot water line in a RV?

Some RVs have one, two or three bypass valves. Ensure that the valves on the cold and hot water line are turned perpendicular to the line. Turn the bypass valve in such a way that it is parallel to the line. The anti-freeze will now pass straight through the line bypassing the tanks. Turn both valves so that they lie parallel to the line.

What is a by pass system on a RV?

Most RV manufactures today install water heater by-pass systems on the RVs they sell. The water heater by-pass system is used to separate the water heater from the RV’s plumbing system. The by-pass system can be used to drain the water heater, and to winterize the RV water system.

How to open a by pass on a hot water heater?

On a 2-valve system turn the valves located on the cold-water inlet and hot water outlet so the handle is in-line with the by-pass line. This will open the by-pass, connecting the cold and hot water plumbing lines. Note: Some bypass valves use knobs rather than handles. Simply turn the knob until it is fully open or closed.

How to bypass the hot water heater drain valve?

RV Hot Water Heater Bypass Valve and Drain Valve 1 • Remove the screen that’s attached to the water hook-up. The check valve is inside this. 2 • Push the valve in until all the water in it comes out and anti-freeze starts to dribble out. 3 • Reconnect your water pump. More