Piston operated pressure reducing valve, PN25 : 

Inlet pressure : 15 bar max
Outlet pressure : 1.2 - 5 bar 
Factory calibration : 3 bar

Use : Drinking water and compatible fluids 
Temperature : 80°C Max
End connection : F/F Gas threads (ISO 228-1)
Pressure gauge plug : 1 plug G 1/4"

Comply with French drinking water regulation