DBB Ball ValveEach DBB Ball Valve manufactured by huachao valves has good quality. We have manufactured and distributed more than 30000 of these units worldwide, and worked with some of the large oil and gas projects in the world. We offer our innovative DBB solution on a variety of our valves, including forged Double Block and Bleeds, instrument Double Block and Bleed’s injection and sampling Double Block and Bleed’s.Hot tags: Double Block Bleed Valve, China, mill, manufacturer, supplier, factory, wholesale, cheap Forged DBB Ball ValveMachined form single piece of grain flow controlled forging. Our Forged Double Block and Bleed Valves Feature two inline ball pattern primary and secondary isolating valves and a heavy duty needle vent valve. Available in D Type, EL Type and N Type with arrange of different operating temperatures and configurations. Our forged DBB valves are the superior market leader in flow control.Size: 1/2"-12"Material: Carbon steel, Stainless steel, Duplex steelPressure range: class 150-class 2500Temperature:-46 to 450Top-entry design on requestFull bore or reduce boreDifferent kinds of end connection (RF/RTJ) Flanges Buttwelded Clamp Connection Socket WeldedMaterial with anti-corrosion properties according to NACE MR0175