Flange cage ball valves are equipped with an internal cage that splits the pressure drop into several stages. Each stage is made up of a drilled plate placed in the downstream flange channel. The number and configuration of internal stages are defined to meet the working conditions specified by the customer, in order to ensure the best flow control capability.
Multi-stage flange cage is designed to operate against high pressure drops providing excellent control capability and noise attenuation during a long service life. Furthermore, tight shut-off and zero external leakage are a fixed point.
Flange cage ball valve are designed for the extremely harsh conditions, such as high differential pressures, cavitation, noise, vibration, flashing erosion, etc. Gas, liquid, solid working conditions can be used.
Size: 1" to 24"
Pressure ratings: ASME Class 150 to ASME Class 2500
Temperature range: -320 ° F to +1472° F
Seat leakage rate: ANSI / FCI 70-2 Class V and VI
Operating designs: Trunnion ball and multi-stage flange cage designs
Body design: 1 or 2-piece forged body
Sealing design: Uni-directional
End flange connections: Welded / Flanged / Clamped / Custom
Top flange: ISO 5211
Mechanical joints: to customer requirements
Materials: Application specific from advanced metallurgy
Coatings: Application specific from proprietary coatings
Actuations: Electric / Pneumatic / Hydraulic / Electro-hydraulic
Multi-Application
Replace all the control of a traditional globe or axial valve.
Multi-Medium
Pressure control of gases, multi-phase fluids and solids
Smaller Size
The size is much smaller than traditional control valves.
Lighter Weight
The weight is much lighter than traditional control valves.
Lower Cost
The cost is much lower than traditional control valves.
High Capacity (Cv)
The flange cage offers a minimum resistance to the flow so the Cv is very high compared to other control valve types.
Cavitation Control
Dividing the pressure drop into several stages reduces the pressure recovery factor, so the vena contracta pressure is maintained over the vapour pressure limit.
Noise Control
A low recovery factor reduces also the maximum speed inside the valve, ensuring a lower sound pressure level and vibration reduction related to the stage configuration.
Other Working Conditions Control:
High ΔP applications
Precision modulation
High rangeability and characterization
Reduction of flashing erosion
Dependable emissions control
Design Standards
Flange cage ball valve is in compliance with IEC 60534, other international standards or customer specifications are available on request.
Materials
It is possible to choose over a wide range of materials to meet the process conditions.
Hard Facing
To ensure a long service life many different coatings are available to prevent ball and seats from damage due to erosive flow and continuous operation.
Actuations
Customer can choose between pneumatic (double acting or spring return), electric or hydraulic actuators, main actuators manufacturers are in collaboration with POWDER to ensure the best service.
Positioning
Many manufacturers can provide pneumatic & digital positioners to meet customers request.
