Starline manufactures a complete line of SINGLE and DOUBLE BLOCK & BLEED ball valves.
Our SBB/DBB ball valves are available in an extensive range of designs, materials, sizes and pressure classes and are in full conformance with API, EEMUA and NACE specifications.
Starline uses only high-quality ITALIAN made forged materials inspected & tested to International Standards and utilizes advanced manufacturing technology with special emphasis on safety, quality and long service life of our products. The forging material can ensure the best rigidity and strength.
- Bolted construction to ensure maximum flexibility in terms of constructions and easy maintenance on site
- Anti-Blow Out stem design
- Available in FLOATING BALL and TRUNNION MOUNTED EXECUTION
- Antistatic device
- Executions available in any construction or service conditions, metal-seated, cryogenic service, high temperature design, API 6A construction, compact design
WHY USE A DOUBLE BALL AND NEEDLE VALVE?
In conditions of space constraint, it is more and more important to find compact solution. As you can see here above one valve is performing the same function of three valves all together and allows a full safety on the line during maintenance operations, not to consider the important reduction of the leakage points on the line. DBB/SBB valves can be used for CHEMICAL INJECTION AND SAMPLING (through a quill), PRESSURE CONNECTIONS (instrumentation mainly), PROCESS ISOLATION (located in the primary process stream).
Starline SBB/DBB valves are designed following the highest safety and quality standards and to meet the most stringent requirements from the end users. Features like Anti Tamper device are standard in our construction.
Starline performs in its facilities different non-destructive testing like ultrasonic, penetrant test, magnetic particles as defined by ASME B16.34.
Starline personnel performing NDT is trained and qualified to EN 473/ ASNT-SNT-TC-1A.
DBB/SBB valves are tested according to API 598 testing procedure and the testing include the bleed functionality. In case of API 6A DBB valves, PR type testing and production testing up to PSL3G are available.
Download SBB-DBB Ball Valve Catalogue
Size: 6.58 MB
Size: 1.42 MB