The boiler could not be in working condition due to low pressure, ergo it is acceptable to think that it is evidence of something more serious like a leak in the system.

If the pressure inside the pipes is too low the water’s stream may be too weak to use it. Insufficient flow of water may be caused by low pressure inside the pipes which can only be fixed by a licensed skilled plumbing expert If you are not happy about the low pressure of the water in your washbasin or shower, a trained plumbing professional can easily repair it. We offer to solve difficulties with low pressure and high pressure in the pipes in less than 20 minutes.

Water may not be running because of low pressure in the pipes which can be safely solved by a qualified plumbing technician

To alter the stream of the water just you should turn the knob to change the pressure inside the hose. If the pressure inside a pvc pipe is too high and the pipe itself has cracks it may end up in a leakage.