Cameron's MS33 multistage choke trim is used in applications where high differential pressures result in unacceptably high noise and vibration levels, especially in gas service. Multistage trims also are commonly used to prevent cavitation in the case of liquids, particularly for water injection.
The trim works by reducing the pressure over a number of discrete stages, giving a carefully managed pressure profile. Similarly, it manages the velocities within the trim and prevents the occurrence of undesired flow effects such as sonic velocities and high-velocity jetting. In addition to the concentric cage type of trim, Cameron can provide a number of alternative multistage trim options.
- Metal body-to-bonnet gasket for absolute pressure containment
- Heavy-duty thrust bearings reduce operating torque
- Fully guided plug reduces side loading and vibration
- Outer flow cage provides protection from impact damage