Firefighting Pressure Reducing Valve

Firefighting Pressure Reducing Valve

PRV or Pressure Reducing Valve is a type of valve that is used to control and reduce water pressure in firefighting water supply systems. These valves are installed in the fire water piping inside the fire box and fire hose on each floor of the building.

Firefighting Pressure reducing valve consists of two main parts:

• Valve body: The valve body is made of metal and has two inlets and outlets. The inlet of the valve is connected to the fire water piping and the outlet of the valve is connected to the fire equipment such as hose rail, sprinkler and manual fire hydrants.alve body: The valve body is made of metal and has two inlets and outlets. The inlet of the valve is connected to the fire water piping and the outlet of the valve is connected to the fire equipment such as hose rail, sprinkler and manual fire hydrants.
• Diaphragm: The diaphragm is a rubber membrane located inside the valve body. This membrane senses the pressure of the incoming water and when the pressure increases, it opens and drains the excess water through the outlet of the valve.

The function of the firefighting pressure reducing valve is that when the inlet water pressure increases, the diaphragm opens and drains the excess water through the outlet of the valve. This will reduce the output water pressure.

The fire pressure reducing valve has the following advantages:

• Controlling and stabilizing the water pressure at a specified value even in the presence of pressure fluctuations
• Providing equal and uniform pressure in different floors for firefighting purposes
• Increasing the life of connections and fire extinguishing tools connected to the piping system
• Preventing the phenomenon of ram impact in water supply connections
• Saving water consumption up to thirty percent

A fire pressure reducing valve should be regularly inspected and serviced by a qualified technician. This is necessary to ensure the correct operation of the valve and prevent accidents.