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PBM - Double Block & Bleed Valve
Specifically Designed for major oil refineries where safety and reliability are critical. Valves are designed to ASME B16.34. PBM double block and bleed valves provide true double positive isolation. This configuration provides the best technology for the most severe isolation services where double block and bleed is required.
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- Two independent sealing members (two ball and seat combinations)
- Two separate actuating mechanisms (two stems and handles or actuators)
- Full or Reduced Port
- Quarter Turn Operation
- API-607 Rev. 4 Fire Rated
- Optional Extended Handle with lock out
- True Double Positive Isolation
- Locking Handle Standard
- Welded or bolted body
- API-622 Low-E Stem Packing Standard
- SIL-3 Capable per IEC 61508
- Custom configurations – consult PBM
- Average stem packing leakage 10 ppmv for the duration of the API 622 test (100 ppm allowable)
- Stem packing is suitable for service at temperatures of -400˚ to 850˚F (-240˚ to 450˚C)
- API 607 Rev. 4 fire tested
- ASME Class 1500 Weld Design standard