How force is applied to this system‘ s hydraulic tandem master cylinder (TMC) when the driver stands on the ‘‘foot control valve‘‘?
iVE HEARD IT FROM PLUMBERS, KNEW ONE THAT JUST DIED OF LIVER CANCER THE OLD PLUMBERS GOT IT FROM LEAD. CPVC IS THE NEW NORM.
hot water would dissolve more but i wouldnt worry about cold. always flush pipe,lead is worse.
Normally Air over hydraulics works with he air giving more pressure to the hydraulic system via the engines Vacuum. You did not state weather it's a diesel engine or not that makes a difference. There are not many air over Hydraulic systems out there and they would work the same way Air Pressure from the foot valve would force the piston in to Multiply the drivers foot force to the brake system.
The only one that is right is Chris. Air brakes use air to keep the brakes disengaged. Very similar to a car with a brake booster, it's used to guide in making use of more force hydraulically that what is often unimaginable for humans. If for some rationale an air line is reduce or disengaged, the brakes are applied and it stops the vehicle. The only loss is air. Although hydraulic fluid will not be compressible and would as a result give you a quicker response in braking, if a line were to be reduce, there would be a giant lack of hydraulic fluid and make a huge mess with a lot of expense.
Each of the tandem cylinders has a piston and a common rod. The air piston is of greater diameter than the hydraulic piston. This difference in the two pistons results in much greater hydraulic pressure than air pressure being admitted to the system. Valve action varies with the amount of pressure applied to the brake pedal. When heavy brake pedal pressure is applied by the operator for hard braking, the hydraulic pressure in the master cylinder (which operates the valves) causes greater valve movement. As a result, the valve admits more air pressure into the air-over-hydraulic power cylinder and this higher air pressure causes a stronger braking action.
