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    Daily drilling / station

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    Daily drilling / station

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Product name:Double Block And Bleed Valve

Product introduction:DBB : Has two spheres (each with seat/operating mechanism), operable together or separately for precise pipeline fluid control. Used for rapid flow direction switching/fluid isolation; boosts critical pipeline reliability (one sphere works if the other fails). Suitable for water, gas, liquid, steam; applied in liquid separation, water treatment, chemical processing, oil/gas transport. Stable, durable, high-control—essential for modern pipeline control.

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Product description

Leakage Class: ISO 5208 Rate A (zero leakage)  
Hardened & specially coated ball/seat: Low torque, high hardness, heat/wear/impact resistance  
Stem blowout prevention: Ensures performance under all operating pressures  
Seat self-relief design: Automatic pressure release on cavity overpressure (open/closed position independent)