Most standard domestic plumbing systems in north America will hold 125 psi, however most operate at anywhere from 35 -85 in daily use.
There is an air fitting on the tank, where you can check the pressure on the one side of the diaphragm. Hold you hand over it and see if the air is leaking out here. If air is leaking out here, you need to get a tire valve tool and tighten the pin. If the diaphragm was bad, the tank would completely fill with water and this should not cause that sound. There is a pressure switch, and the plumbing lines, but if there where to whistle, you would see water leaking out.
With no air in the system anywhere, there would be nothing to hold pressure, so the slightest leak would cause the system to go to zero.
The fuel pressure regulator is bad, one or more fuel injectors is leaking or the check valve in the fuel pump is faulty.
I would hold water soluble meds like vitamins and minerals. I would hold antibiotics. I would hold blood pressure meds if the client's B/P was low prior to dialysis.
Because there is no air and thus no pressure that would hold your atoms together
Under ordinary conditions, the air that is in the lung is exhaled. If you hold your breath while ascending on SCUBA, the pressure differential can cause the rupture of the lung and a condition called pneumothorax.
If the pressure cap on the surge tank is left loose, defective or will not hold pressure.
Settings that are too high on a ventilator can cause ventilator induced lung damage. The normal peak pressure (flow) inspiratory hold is .5-1 second.
It means you really have to pee but i would hold it *wink wink*
I would tell you but I can not