Forged Steel DBB Double Ball Valve
Small bore DBB double ball valve is widely used in instrument piping, sampling system and high-pressure manifold. It integrates two ball valves plus bleed port, saving installation space and reducing leakage points.
Manufacturing Range
Size: 1/2"～2"
Pressure Class: Class150～Class2500
Body Material: A105, F304, F316, F316Ti
End Connection: Flanged, Threaded, NPT optional
Operation: Manual lever handle
Design Features
Compact forged steel body, suitable for small-bore high-pressure working conditions.
DBB function: double block and bleed, cavity vent port for pressure relief.
Two independent ball cores to form double sealing isolation.
Manual lever operation, quick open & close.
Anti-static design, blow-out proof stem, bidirectional tight sealing.
Design Standards
Design & Manufacture: API 6D, ASME B16.34
Flange Standard: ASME B16.5
Inspection & Test: API 6D, API 598