6 Bar Pressure Relief Valve 3/4" Loose Nut to 1/2" BSP 311501 Specifications: Size: 1/2" Connections: F x Loose Nut Set Pressure: 6 Bar Discharge Pressure: 7.2 Bar Pre-Seating Pressure: 4.8 Bar Discharge Flowrate kg/hr: 248.8 Max Boiler Rating: 144.6kW Max Static Pressure: 10 Bar Height: 72mm Stainless Steel Seating