D04FM Pressure Reducing Valve

The D04FM pressure reducing valve is designed to protect household appliances against excessive supply pressures. By installing a pressure reducing valve, water consumption can be drastically reduced; water flow noise and over-pressurisation damage is avoided. For multi draw-off and commercial use, the D05 or D06 is recommended.


A small compact valve that will maintain a constant water pressure irrespective of the supply pressure, which is often much higher.


Typically D04FM valves are used to control water pressure on basin, sink or bath outlets. The D04FS has been awarded the Waterwise Marque.



  • Conforms to EN1567
  • Spring loaded, balanced seat - means a constant outlet pressure regardless of fluctuating inlet pressure
  • Lightweight
  • Simple, compact construction
  • Available with pressure gauge
  • 16 bar inlet pressure
  • 1.5 up to 6 bar adjustable outlet pressure
  • Maximum operating temperature 40°C
  • WRAS approved



Code Description
D04FM-1/2A 1/2” BSP connections, outlet range 1.5-6.0 bar
D04FM-3/4A 3/4” BSP connections, outlet range 1.5-6.0 bar
D04FM-1/2ZC 15mm compression fittings, outlet range 1.5-6.0 bar
D04FM-3/4ZC 22mm compression fittings, outlet range 1.5-6.0 bar
D04FM-1/2ZGC As D04FM-1/2ZC complete with gauge
D04FM-3/4ZGC As D04FM-3/4ZC complete with gauge
M38K-A4 A4 Pressure gauge up to 4 bar
M38K-A10 A10 Pressure gauge up to 10 bar
M38K-A16 A16 Pressure gauge up to 16 bar