CONCENTRIC SPLIT DIAPHRAGM (CSD) VALVE ALSO CALLED IRIS VALVE
ELECTRIC OR PNEUMATIC ACTUATION WITH POSITIONER
Flow Control Applications:
- Sugar Industry: Sugar Syrups, Massecuites, Molasses, Lime (Caoh) Slurry, Etc.
- Pharma And Chemical: Various Types Of Slurries, Multiple Kinds Of Viscous Fluids And Free-Flowing Materials
- Wastewater Treatment Plants: Wastewater From Municipalities And Industries, Air Flow For Aeration Control
- Pulp And Paper Industry: Paper Pulp And Fluids With Fibrous Suspensions
- Free-Flowing Granules Or Pellets: Salt, Powders, Grain, Polymer Granules Etc
- Air And Gas: Industrial Hot And Cold Air, Non-Corrosive Gases
Characteristics And Advantages Of IRIS OR CSD Valve:
- Rugged Build Quality For Long Life And Frequent Throtteling And On / Off Operations.
- Heavy-Duty Rugged Valve Construction Absorbs All Shocks And Vibrations.
- Valve Internals Designed To Operate Under Heavy Media Loads.
- Precise Flow Control Without Hysteresis Due To The Concentric Opening Of The Split Diaphragm.
- Energy Saving Whilst Flow Control Due To Free Passage Through Concentric Opening.
- Low Noise And No Flow Turbulence Throughout The Full Flow Control Range.
- Very Low Maintenance.
- High Flow Capacity
- Lower Pressure Loss Than Other Valve Types Due To Free Passage Through Concentric Opening.
Other Applications:
- Controlled Gravity Flow Of Grains Or Pellets Or Powders With A Particle Size Between 0.5 MM And 10 MM
- Ideal For Controlling Gravity Flow Control Of Flow Of Slurries / Semi-Solids / Concrete And Other Fluids
- Ideal For Ratio Control Of Two Or More Ingredients Falling In A Vessel
- Hot And Cold Airflow Control
Flow Profile For Inline Installation And Open To Atmosphere Gravity Flow Installation:
Valve Controller With The Following Features:
- PID Control Action For Flow Control
- Remote Set Variable Facility For Flow Control As Per Another Process Parameter
- Built-In Auto-Manual Station
- DCS Input Facility (4-20MA DCS Control Output For Valve Control Given Through Toggel Switch. This Avoids Need Of Additional Junction Box On Field)
- Toggle Switch For Switching Between DCS Output And Local Controller Output
- Optional Valve Position Feedback As 4-20mA
Pneumatic Actuation:
- Pneumatic Clylinder With Electro-Pneumatic Positioner For Smooth Linear Control Action
- Operating Air Pressure: 2 - 7 KG/CM2
- Input: 4-20MA From Any External Source
Electric Motorized Actuation:
- Electric Actuator Geared Ac Induction Motor
- Operating Voltage: Single Phase 110 Vac 60Hz / 230 Vac 50 Hz Or Three Phase 440 Vac 50 / 60Hz
- Input: 4-20MA From Any External Source Or Push Buttons
Hand Wheel:
- Geared Hand-Wheel
Hand Lever:
- Hand Level Operated
Iris Or Csd Valve Specifications:
| Valve Type | : | IRIS Or Concentric Spilt Diaphragm Valve |
| Sizes | : | 2" (50mm), 3" (75mm), 4" (100mm), 6" ( 150mm), 8" (200mm), 10" (250mm), 12" (300mm), 16" (400mm), 18" (450mm) |
| Body Material | : | Standard: Ms Fabricated On Request: SS 316L / SS 304 / LCB |
| Petal Segments | : | Standard: Ss 304. On Request: Ss 316L, Duplex Steel 2205 / Other Special Material |
| Bearings And Wedges Material | : | Standard: Ss 304. On Request: Ss 316L, Duplex Steel 2205 / Other Special Material |
| Sheathing | : | PTFE / PU |
| Actuation | : | Pneumatic Linear / Electric - Motorized / Hand - Wheel |
| Actuator Stroke / Torque | : | As Per Valve Size And Line Pressure |
| Positioner | : | Electro-Pneumatic / Electronic |
| Actuator Stroke / Torque | : | As Per Valve Size And Line Pressure |
| Positioner | : | Electro-Pneumatic / Electronic |
| Position Feedback : (Optional) | : | 4 - 20 MA / 0 - 5 VDC |
| Input (For Actuated Valves Only) | : | 4 20 Ma From Any External Source Or Push Buttons For Open And Close |
| Media Temperature And Pressure | : | -45 To 160°C, 0-10Kg/cm2 |