Control Valve-Type Globe Balanced Caged

Control Valve-Type Globe Balanced Caged

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Description

TECHNICAL DATA SHEET

Electric Modulating Control Valve (Balanced Cage-Guided Globe Valve, Equal Percentage, Explosion-Proof)

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1. General Information

Item Specification
Valve Type Electric Modulating Control Valve, Balanced Cage-Guided, Globe Pattern
Size Range DN25 – DN300 (1″ to 12″) [Specify size: _____]
Pressure Rating PN16 / PN25 / PN40 / PN64 / PN100 / Class 150 / 300 / 600
End Connection Flanged (RF / RTJ) per ASME B16.5 or EN 1092-1
Design Standard IEC 60534-2-1 / ASME B16.34 / DIN EN 1349
Face to Face Standard IEC 60534-3-1 / ASME B16.10
Test Standard IEC 60534-4 / ANSI/FCI 70-2
Service Steam, Water, Oil, Gas, Chemical Fluids
Temperature Range -196°C to +450°C (Depending on trim and gasket selection)
Flow Characteristic Equal Percentage (EQ%)
Action Type Air-to-Close / Air-to-Open (Fail-Safe Position: Specify)

2. Bill of Materials (Materials of Construction)

Part Name Qty. Material Material Specification / Notes
Body 1 WCB / CF8 / CF8M / WC6 ASTM A216 Gr.WCB (Carbon Steel) / ASTM A351 CF8/CF8M (SS)
Bonnet 1 WCB / CF8 / CF8M Same as body material
Seat Ring 1 304 / 316 / 17-4PH Stainless Steel, Hard-faced (Stellite) optional
Valve Plug 1 304 / 316 / 17-4PH Balanced design with pressure equalization holes
Cage / Seat Cage 1 304 / 316 Balanced cage-guided design
Stem 1 304 / 316 / 17-4PH Rolled threads for high strength
Piston Rings 1 set PTFE / Graphite / Carbon-filled PTFE For balanced plug sealing
Bonnet Gasket 1 Spiral Wound 316/Graphite With inner/outer ring
Bonnet Bolts & Nuts Set A193 B7 / A194 2H Carbon steel or stainless steel
Packing Set PTFE V-Ring / Graphite Live-loaded (Belleville springs) optional
Packing Flange 1 Carbon Steel / SS Standard
Gland / Follower 1 Carbon Steel / SS Standard
Name Plate 1 Stainless Steel MSS SP-25 / IEC 60534 marking

3. Electric Actuator Specifications

Item Specification
Actuator Type Electric Modulating Actuator (Linear Stroke)
Model Series 3610L Series / PSL Series / Comparable
Control Signal 4-20 mA DC / 0-10V DC (Programmable)
Feedback Signal 4-20 mA DC (Position feedback)
Power Supply 220V AC 50Hz / 110V AC 60Hz / 24V DC (Specify)
Servo Amplifier Built-in (integral) – no external amplifier required
Protection Class IP65 / IP67 (Weatherproof)
Explosion-Proof Rating Exd IIB T4 (Flameproof)
Ambient Temperature -20°C to +70°C
Handwheel Manual override / Handwheel standard
Motor Protection Thermal overload protection
Duty Cycle 50% to 100% (Modulating duty)
Travel Speed 1.0 – 4.2 mm/s depending on model and thrust

4. Material Specifications & Rationale

Component Material Rationale
Valve Body WCB / CF8/CF8M Carbon steel for general service; stainless steel for corrosive media. Cast construction per ASTM standards.
Trim (Plug & Seat) 304/316 SS Standard trim materials; hard-facing (Stellite) available for erosive services.
Balanced Cage Design – Pressure-balanced plug with piston rings reduces unbalanced forces, allowing smaller actuator and higher shut-off differential pressure . Cage provides guiding and flow characterization.
Packing PTFE / Graphite PTFE for general service up to 230°C; Graphite for high temperature up to 450°C .

5. Flow Characteristics & Sizing Data

  • Flow Characteristic: Equal Percentage (EQ%)

    • Description: Valve gain increases as flow increases. Compensates for system pressure drop variations, providing stable control over entire range. Recommended for pressure control and temperature control loops .

  • Inherent Rangeability: 50:1

Rated Flow Coefficients (Kv / Cv) – Typical Values

DN (mm) Seat Dia. (mm) Rated Kv (EQ%) Rated Cv (EQ%) ~Kv x 1.16 Travel (mm)
25 26 10 11.6 16
32 32 16 18.6 16
40 40 25 29 25
50 50 40 46.4 25
65 66 63 73 40
80 80 100 116 40
100 100 160 186 40
125 125 250 290 60
150 150 400 464 60
200 200 630 731 60
250 250 1000 1160 100
300 300 1600 1856 100

Note: Actual Kv values may vary by manufacturer. Consult sizing software for specific conditions.

6. Dimensional Data (Reference)

*Note: Face-to-face dimensions per IEC 60534-3-1 / ASME B16.10. Actual dimensions vary by manufacturer and pressure class.*

DN (mm) L (mm) PN16/25 L (mm) PN40 L (mm) PN64/100 H (mm) Open (Approx) Actuator Model (Typical)
25 185 190 200 ~700 361LSA-20 / PSL202
32 205 210 220 ~720 361LSA-20 / PSL202
40 222 230 251 ~730 361LSA-20 / PSL202
50 250 255 286 ~740 361LSB-30 / PSL204
65 276 285 311 ~830 361LSB-30 / PSL204
80 298 310 337 ~850 361LSB-50 / PSL208
100 350 355 394 ~870 361LSC-65 / PSL208
150 451 460 475 ~1150 361LSC-99 / PSL312
200 600 615 630 ~1170 361LSC-160 / PSL320
250 670 685 700 ~1320 Custom / Larger actuator
300 735 750 765 ~1520 Custom / Larger actuator

Flange Details: Drilled per ASME B16.5 or EN 1092-1 as specified.

7. Performance & Testing

Parameter Specification / Value
Seat Leakage Class ANSI/FCI 70-2 Class IV (0.01% of rated Cv)
Optional: Class V (0.0005 ml/min/inch seat dia. per psi diff.)
Basic Error ±2.0% (with 3610L actuator)
Hysteresis (Dead Band) ≤ 1.0%
Repeatability ≤ 0.5%
Shell Test Pressure 1.5 x Rated Pressure
Seat Test Pressure 1.1 x Rated Pressure
Maximum Allowable Differential Pressure Up to 10 MPa (depending on size and trim selection)
Noise Reduction Cage with multi-hole / reduced noise trim optional

8. Features & Benefits

Feature Description
Balanced Cage-Guided Design Reduces dynamic and unbalanced forces, enabling higher shut-off pressures and smaller actuator selection . Cage provides precise guiding, reducing vibration and noise.
Equal Percentage Flow Characteristic Provides excellent control at low flow rates and stable gain throughout operating range. Ideal for pressure, temperature, and level control loops where system pressure drop varies .
Integrated Electric Actuator Built-in servo amplifier accepts direct 4-20mA control signal; no external positioner required .
Explosion-Proof Certification Exd IIB T4 certified for hazardous locations (Zone 1, Zone 2) . Suitable for oil & gas, chemical, and petrochemical plants.
Live-Loaded Packing (Optional) Belleville springs maintain constant packing force, compensating for wear and thermal cycles; reduces fugitive emissions.
Interchangeable Trim Cage, seat, and plug can be replaced without removing valve body from pipeline (top-entry access via bonnet).

9. Application Guidelines

  • Suitable Applications:

    • Continuous modulating control of liquids, gases, and steam

    • Pressure reducing stations

    • Temperature control (heat exchangers)

    • Flow control loops

    • Boiler feedwater control

    • Chemical injection

  • Not Suitable For:

    • On-Off isolation duty (use dedicated shut-off valves)

    • Slurries or fluids with suspended solids (may damage cage and seat)

    • Severe cavitation without anti-cavitation trim

10. Actuator Sizing Guidelines

Actuator Model Thrust (N) Speed (mm/s) Suitable Valve Size (PN16, typical)
361LSA-20 / PSL202 2000 2.1 DN25-50
361LSB-30 / PSL204 3000 3.5 DN50-80
361LSB-50 / PSL208 5000 1.7 DN80-100
361LSC-65 / PSL312 6500 3.4 DN100-150
361LSC-99 / PSL320 10000 2.0 DN150-200
361LSC-160 16000 1.0 DN200-250

Note: Final actuator selection depends on shut-off pressure, flow direction, and safety requirements.

11. Special Options

Option Description
Low-Noise Trim Multi-hole cage design reduces aerodynamic noise by 10-15 dB
Anti-Cavitation Trim Special cage design to delay cavitation onset
Heated / Cooled Actuator For extreme ambient temperatures
Extended Bonnet For cryogenic or high-temperature service (>250°C)
Oxygen Service Cleaning Degreased and cleaned per CGA G-4.1
NACE Compliance For sour service (H₂S)
Special Materials Alloy 20, Hastelloy C, Monel, Duplex SS

12. Marking & Documentation

  • Valve Marking: Per MSS SP-25 / IEC 60534 (Size, Pressure Class, Material, Manufacturer, Heat No., Flow Arrow)

  • Actuator Marking: Model, Serial No., Power Supply, Ex Marking

  • Standard Documentation:

    • Material Test Certificates (EN 10204 3.1)

    • Pressure Test Report

    • Certified Dimensional Drawing

    • Actuator IOM Manual

    • Calibration Certificate

  • Optional Documentation:

    • NACE Report

    • PMI Test Report

    • NDT Reports (RT, PT, MT)

    • SIL Certificate

Procurement Notes

  1. Valve Size & Pressure Class: Specify DN (mm) and PN/Class rating based on process conditions.

  2. Body Material: Confirm material (WCB carbon steel / CF8M stainless steel / others).

  3. Flow Characteristic: Equal Percentage is specified; confirm if linear is required for specific applications.

  4. Actuator: Confirm power supply (220V / 110V / 24V) and control signal (4-20mA standard).

  5. Fail-Safe Position: Specify fail-open (air-to-close) or fail-closed (air-to-open).

  6. Packing Material: PTFE for standard service up to 230°C; Graphite for high temperature >230°C.

  7. Seat Leakage Class: Class IV standard; specify if Class V is required.

  8. Accessories: Specify if limit switches, position transmitter, or heater/thermostat are required.

*This technical data sheet complies with IEC 60534, ASME B16.34, and ANSI/FCI 70-2 standards for electric modulating control valves .*

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