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Severe Service Control Valves






















MEGAFLO Plate Diffuser






















Taperflo Trim

Severe Service Control Valves

CAVFLO Trim - CAVFLO trim is used in liquid applications to protect control valves from cavitation damage.

The CAVFLO trim controls where the cavitation vapor bubbles collapse keeping them away from valve components. It works by reducing the flow into many small flow streams through the carefully engineered holes in the CAVFLO trim.

The design of these holes ensures that the vena contracta and the formation of cavitation vapor bubbles occurs as the flow exits the retainer. The flow streams are directed into the center of the trim, where opposing streams collide allowing the cavitation vapor bubbles to collapse harmlessly against themselves, away from valve components.

CAVFLO trim fits standard GFLO bodies and can be supplied with =%, linear or bi-linear flow characteristics.

MEGAFLO Trim - MEGAFLO trim is used to reduce control valve noise to acceptable levels in high pressure drop gas applications.

The MEGAFLO attenuator design consists of a series of retainers which can reduce noise levels by up to 30 dBA. Noise attenuation is achieved by staging the pressure drop not just across the plug and seat but also across the holes in each of the retainers and by controling the turbulence carried into the downstream piping using the following mechanisms:


√ Staged Pressure Drop

√  Small Flow Streams

√  Accoustice Impedance

VC Trim - The VC Trim is used for liquid, applications where the pressure drop is high enough to cause severe cavitation and the energy being dissipated is significant enough to cause substantial damage to standard trims and pipe work.

The multi stage design of the VC Trim eliminates cavitation and ensures the trim exit velocity is maintained at acceptable levels. As the liquid moves through the passages in the VC Trim the energy is dissipated through sharp direction changes, friction and turbulence.

The total pressure drop is distributed over a series of stages and cavitation is prevented from occurring by ensuring that the internal fluid pressure does not fall below the vapor pressure at any stage.

The design of the VC Trim provides sufficient number of discrete pressure reduction stages to maintain the trim exit velocity below 23 m/sec (75 ft/sec).

MEGAFLO Plate Diffuser - MEGAFLO trim is used to reduce control valve noise to acceptable levels in high pressure drop gas applications.

The MEGAFLO attenuator design consists of a series of retainers which can reduce noise levels by up to 30 dBA. Noise attenuation is achieved by staging the pressure drop not just across the plug and seat but also across the holes in each of the retainers and by controling the turbulence carried into the downstream piping using the following mechanisms:


√ Staged Pressure Drop

√  Small Flow Streams

√  Accoustice Impedance

TAPERFLO Trim - TAPERFLO Trim is used for small Cv liquid applications where the pressure drop is high enough to cause cavitation and the energy being dissipated is high enough to cause substantial damage to standard trims.

The TAPERFLO trim gradually reduces the energy of the incoming liquid to prevent cavitation from occurring. The design provides a sufficient number of discrete pressure reduction stages to ensure the internal pressure of the liquid never falls below the vapour pressure.

 

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