Description
TECHNICAL DATA SHEET
Electric Modulating Control Valve (Balanced Cage-Guided Globe Valve, Equal Percentage, Explosion-Proof)
- General Information
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Item
|
Specification
|
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Valve Type
|
Electric Modulating Control Valve, Balanced Cage-Guided, Globe Pattern
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Size Range
|
DN25 – DN300 (1″ to 12″)
|
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Pressure Rating
|
PN16 / PN25 / PN40 / PN64 / PN100 / Class 150 / 300 / 600
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End Connection
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Flanged (RF / RTJ) per ASME B16.5 or EN 1092-1
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Design Standard
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IEC 60534-2-1 / ASME B16.34 / DIN EN 1349
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Face to Face Standard
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IEC 60534-3-1 / ASME B16.10
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Test Standard
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IEC 60534-4 / ANSI/FCI 70-2
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Service
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Steam, Water, Oil, Gas, Chemical Fluids
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Temperature Range
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-196°C to +450°C (Depending on trim and gasket selection)
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Flow Characteristic
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Equal Percentage (EQ%)
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Action Type
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Air-to-Close / Air-to-Open (Fail-Safe Position: Specify)
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- Bill of Materials (Materials of Construction)
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Part Name
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Qty.
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Material
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Material Specification / Notes
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Body
|
1
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WCB / CF8 / CF8M / WC6
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ASTM A216 Gr.WCB (Carbon Steel) / ASTM A351 CF8/CF8M (SS)
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Bonnet
|
1
|
WCB / CF8 / CF8M
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Same as body material
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Seat Ring
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1
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304 / 316 / 17-4PH
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Stainless Steel, Hard-faced (Stellite) optional
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Valve Plug
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1
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304 / 316 / 17-4PH
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Balanced design with pressure equalization holes
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Cage / Seat Cage
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1
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304 / 316
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Balanced cage-guided design
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Stem
|
1
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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
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Packing
|
Set
|
PTFE V-Ring / Graphite
|
Live-loaded (Belleville springs) optional
|
|
Packing Flange
|
1
|
Carbon Steel / SS
|
Standard
|
|
Gland / Follower
|
1
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Carbon Steel / SS
|
Standard
|
|
Name Plate
|
1
|
Stainless Steel
|
MSS SP-25 / IEC 60534 marking
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- Electric Actuator Specifications
|
Item
|
Specification
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|
Actuator Type
|
Electric Modulating Actuator (Linear Stroke)
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Model Series
|
3610L Series / PSL Series / Comparable
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Control Signal
|
4-20 mA DC / 0-10V DC (Programmable)
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Feedback Signal
|
4-20 mA DC (Position feedback)
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Power Supply
|
220V AC 50Hz / 110V AC 60Hz / 24V DC (Specify)
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Servo Amplifier
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Built-in (integral) – no external amplifier required
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Protection Class
|
IP65 / IP67 (Weatherproof)
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Explosion-Proof Rating
|
Exd IIB T4 (Flameproof)
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Ambient Temperature
|
-20°C to +70°C
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Handwheel
|
Manual override / Handwheel standard
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Motor Protection
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Thermal overload protection
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Duty Cycle
|
50% to 100% (Modulating duty)
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Travel Speed
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1.0 – 4.2 mm/s depending on model and thrust
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- 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.
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|
Trim (Plug & Seat)
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304/316 SS
|
Standard trim materials; hard-facing (Stellite) available for erosive services.
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|
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.
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|
Packing
|
PTFE / Graphite
|
PTFE for general service up to 230°C; Graphite for high temperature up to 450°C .
|
- 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
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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.
- 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)
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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
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Flange Details: Drilled per ASME B16.5 or EN 1092-1 as specified.
- 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.)
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|
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
|
- 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).
|
- 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
- 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.
- 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
|
- 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
- Valve Size & Pressure Class: Specify DN (mm) and PN/Class rating based on process conditions.
- Body Material: Confirm material (WCB carbon steel / CF8M stainless steel / others).
- Flow Characteristic: Equal Percentage is specified; confirm if linear is required for specific applications.
- Actuator: Confirm power supply (220V / 110V / 24V) and control signal (4-20mA standard).
- Fail-Safe Position: Specify fail-open (air-to-close) or fail-closed (air-to-open).
- Packing Material: PTFE for standard service up to 230°C; Graphite for high temperature >230°C.
- Seat Leakage Class: Class IV standard; specify if Class V is required.
- 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 .*
GUATANTEE:
SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.
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