Ball valve 651 series

manualshut-offfor water

This tool packed by PTFE comes with a weak head loss, and an inside check valve capable of being placed in any position. It is used for all common fluids. The tool operates with a maximum pressure of 16 bars, with a temperature from +5°C minimum to + 90°C maximum. SPECIFICATIONS : • - With mside check valve ail positions • - Respect the flow direction indicated by the arrow • - PTFE packing • - Weak head loss • - 10 years manufacture warranty (the installation defects and wear defects are not covered by the guarantee) USE : • - Heatmg. drinkable water. cold and hot water • - Min Température Ts : + 5°C • - Max Température Ts :+90°C • - Max Pressure Ps : 16 bars The valve consists of a bail (1) contaming a check obturator (2) with a fluid-dynamic shape. During normal circulation of the medium in the System, the obturator is pushed against the retaming spring (3) housed inside it. thereby opening the aperture and allowing the medium to flow through it. When the pressure downstream of the valve is higher than the upstream pressure, the obturator is pushed in the opposite direction against the seal seat on the bail (4). in order to prevent backflow of the medium. Even with no flow. the valve is closed by the action of the retaining spring alone. The obturator. owing to the thrust exerted by the retaining spnng (3) and by the downstream pressure, completely shuts off the flow passage by means of the speaally shaped seal (5) (positioned on the bail seal seat or on the obturator depending on the version). The bail valve, equipped with butterfly handle (6) or lever handle depending on the size of the valve, acts as a standard shut-off device.