Water Pressure Reducing Valve 1/2" BSP European Thread Female for 15mm Pipe with Gauge To Suit Pipe Work: 15mm (1/2" BSP European Thread) Copper Pipe; Maximum Pressure at Inlet: 16 bar; Outlet Adjustment Range: 1 to 6 bar; Factory Setting: 3 bar; Max inlet pressure: 16 BAR; Max working temperature: 70C; Pressure Gauge Connection: 1/4" BSP European Thread; Pressure Gauge Reading: 0 to 10 bar;