To change the stream of the water just you should to turn the knob to replace the pressure inside the hose.

If the pressure inside the pipes is too low the water’s stream may be too insufficient to use it. Insufficient flow of water may be caused by low pressure inside the pipes which can only be fixed by a licensed experienced plumbing professional We offer to problem solve headaches with low pressure and high pressure in the pipes in less than 20 minutes. If the pressure inside a drain is too high and the iron pipe itself has cracks it may end up in a leakage.

Water may not be running because of low pressure in the pipes which can be safely solved by a expert plumber

The boiler could not be functioning on account of low pressure, that being so it is acceptable to think that it is a hint of something more serious like a leak in the system. If you are not happy about the low pressure of the water in your washbasin or shower, a experienced plumbing expert can easily put right it.