DBB Ball Valve (Double Block and Bleed Valve)
KEYSWON DBB ball valves are designed and manufactured in accordance with API 6D, ASME B16.34, API 608, MSS SP-72, and BS5351 standards. Its NPS ranges from 2" to 24".
As a double block and bleed valve, this product has two balls in its body cavity for added sealing performance. The balls that rotate with the valve stem serve to open and close the valve. In case one ball is broken, the other can be switched on quickly to facilitate on-line maintenance so as to guarantee the smooth running of your entire operation. On the two sides of the DBB ball valve body, there is a needle valve and a bleed valve to lower the fluid pressure and discharge sewage.
Our company is a professional valve production enterprise that can produce all kinds of industrial valves and specialty valves for customers. No matter if you are looking for manual, electric or pneumatic DBB ball valve, we can provide you with the solution.
Technical Parameters of DBB Ball Valve| Design and Manufacture Standard | API 6D, ASME B16.34, API 608, MSS SP-72, BS5351 |
| Face to Face Dimension | ASME B16.10, API 6D, EN558 |
| Flange Connection Dimension | ASME B16.5, DIN2501 |
| BW Connection Dimension | ASME B16.25 |
| Pressure-Temperature Ratings | ASME B16.34 |
| Test and Inspection | API 598, API 6D |
| Operation Type | Manual, gear, electric, pneumatic, hydraulic |
| NPS | 2"~24" |
| Class | 150~2500lbs |
| Main Materials | A216-WCB, A217-WC6, WC9, C5, C12, A351-CF8, CF8M, CF3, CF3M, CF8C, CN7M, A105, A182-F11, F22, F9, F5, F304, F316, Alloy-20 |
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