• Overview
  • Specifications
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The Cameron range of TBV valves includes the Series 21/20 unibody, cast, flanged, cryogenic ball valve, which is specifically designed for cryogenic applications. Its totally encapsulated body seals resist the cold flow of PTFE and enable high performance over a wide temperature and pressure range.

The combination of its investment cast, unibody, standard port design, extended bonnet, and blowout-proof stem offers unrivaled safety and reliability in both on-off and modulating applications. As a result of our exclusive Cryofil seat material, adjustable V-ring stem packing, and dual, fully-encapsulated body seals, the Series 21/20 ball valve offers low-torque operation and tight shutoff at temperatures down to –452 degF [–269 degC]. Actuator mounting is facilitated by a rugged, four-bolt mounting pad as standard. In the manually operated version, this mounting pad provides a standard locking device.


Standard features
  • ASME classes 150 to 600
  • 1/2- to 8-in [15- to 200-mm] size range
  • Floating ball valve seat configuration
  • Unibody construction
  • Dual body seal design
  • Flanged: raised face end connections
  • Upstream hole in ball or cavity pressure-relieving seats
  • Casting type
    • Investment cast: 1/2 to 3 in [15 to 75 mm]
    • Sand cast: 4 in [100 mm] and greater