In dirty, sticky, and erosive applications, where cage guided
valves fail, plug characterization, stem guiding, and balancing effect
give the double-seated GTB design the best combination of features
necessary to succeed.
Since
inlet pressure exerts force on the upper and lower plugs, the forces are
balanced. This balancing effect reduces the net thrust required to move
the plug, allowing for smaller actuators to be used in higher
pressure drop applications and resulting in lower overall
installation cost and dimensional envelope.
Two Point Guiding
The GTB valve plug is supported and rigidly guided by an
upper and lower guide bushings. This two-point guiding provides
exceptional stability and minimal valve plug deflection even under
high pressure drop conditions, and allows precise control and
characterization of fluid.
Field Reversible
The Equal Percentage V-Port, Equal Percent Contoured, Linear
Contoured, and Quick Opening plugs are easily reversed in the field so
that either a fail open or closed action can be obtained using the
same actuator.
Optional Extended Bonnet
Bonnet options include the standard bolted configuration and
extension bonnet for temperatures below 32°F (0°C) and above 450°F
(232°C).
