Electric Linear Modulating Valve Actuator for Globe Valve
The electric linear modulating actuator uses a brushless DC motor to provide 3 kN to 30 kN thrust for globe, mixing, and industrial control valves.
Electric Linear Modulating Valve Actuator for Globe Valve
Item Number: HUBL Series
Rated Thrust: 3 kN – 30 kN
Travel Stroke: 40 mm, 60 mm, 100 mm
Operating Speed: 1.0 mm/s – 1.2 mm/s (Precision modulating)
- Application: Globe Valves, Linear Control Valves, Mixing Valves
Motor Type: Brushless DC Motor
Power Supply: 220V AC, 110V AC (50/60 Hz), 380V AC (3-phase), or 24V DC.
Control Signal: Modulating (4–20 mA / 0–5 V / 2–10 V analog input & feedback)
Manual Override: Pull-out manual handwheel (clutch-free)
- Fieldbus Protocol: Modbus RTU, Profibus-DP, HART (Optional)
- Certifications: ISO 9001, CE,IP65
Quote Now
Get Free Catalog
Custom Actuator Housing Color
We customize electric linear modulating actuator housing colors (RAL/Pantone) with durable epoxy powder coating to match your corporate brand identity, system color-coding, or specific project aesthetic requirements.
Custom OEM Label
We offer private label solutions for distributors and OEM valve makers. Choose corrosion-resistant metal plates (stainless/aluminum) with laser-etched logos, or high-tack weatherproof industrial stickers.
18-Month Factory Warranty
Every electric linear modulating actuator includes an 18-month warranty from the shipment date, providing a 6-month buffer beyond industry standards for ocean transit, customs clearance, and warehouse stocking.
Description of HUBL Series Electric Linear Actuator for Globe Valve
The HUBL series linear electric actuator controls modulating valves with a brushless DC motor. It provides 3 kN to 30 kN thrust and 40 mm to 100 mm stroke lengths, matching standard globe, mixing, and linear control valves.
Specifications & Features
| Brushless DC Motor: No carbon brushes to replace and lower internal heat, delivering stable, continuous modulating performance with zero motor maintenance.
Wide Thrust Range: Covers 3 kN to 30 kN across HUBL2, HUBL3, and HUBL4 frame sizes with strokes up to 100 mm for reliable, tight shut-off.
Direct Pull-Out Manual Override: Pull the handwheel outward for immediate manual operation during power loss—no clutch lever needed.
External Calibration Panel: Allows quick stroke calibration and parameter settings on-site without opening the housing cover.
Dual-Pillar Alignment Structure: Dual guide pillars and a solid linear shaft keep the valve stem straight and centered during full stroke travel.
Industrial-Grade Enclosure: Hard-anodized aluminum housing with outdoor polyester powder coating, rated IP65 for harsh environments.
Temperature resistance: -20°C ~ +55°C
Humidity resistance: Maximum relative humidity of 90% (non condensing)
Seismic capacity: XYZ10g.0.2-34Hz, 30 minutes |  |
Materials and Component
Configurable Options & Ordering Specifications
Linear Model Classes:
Modulating Control Inputs: Standard 4–20 mA (M1), with optional 0–5 V (M2) or 2–10 V (M3) proportional input and feedback signals.
Operating Power Supply: 220V AC, 110V AC (50/60 Hz), 380V AC (3-phase), or 24V DC.
Internal Anti-Condensation Heater: Recommended for outdoor, high-humidity, or low-temperature environments to keep internal electronics dry.
OEM Customization: Custom valve bonnet flange plates, stem adapter threads, custom RAL housing powder colors, and private-label client nameplates. |    |
Looking for a Reliable Electric Linear Modulating Valve Actuator Manufacturer?
Factory-direct pricing, consistent quality, and reliable lead times for bulk orders.
Technical Specifications
| Model | Thrust (KN) | Speed (mm/s) | Motor (W) | Stroke (mm) | Insulation Level | Rated current (A) | Weight (kg) | Manual Device | |||
| DC24V | AC110V | AC220V | AC380V | ||||||||
| HUBL1 | 1 | 1 | 10 | 30 | F | 0.7 | 0.2 | 0.1 | 0.06 | / | Clutch handwheel |
| 2 | 1 | 15 | F | 0.8 | 0.22 | 0.12 | 0.08 | / | |||
| HUBL2 | 3 | 1 | 18 | 40 | F | 1 | 0.28 | 0.14 | 0.08 | 8.6 | |
| 5 | 1 | 25 | F | 1.2 | 0.33 | 0.17 | 0.1 | 8.6 | |||
| HUBL3 | 8 | 1.2 | 35 | 60 | F | 2 | 0.55 | 0.28 | 0.16 | 14.35 | |
| 15 | 1.2 | 50 | F | 3.12 | 0.85 | 0.43 | 0.25 | 14.35 | |||
| HUBL4 | 20 | 1.2 | 90 | 100 | F | 7 | 1.54 | 0.77 | 0.45 | 23 | |
| 30 | 1.2 | 120 | F | 9.4 | 2.1 | 1.1 | 0.6 | 23 | |||
* Standard catalog specifications shown above. Contact Hearken for customized stroke lengths or special travel speeds.
Need Custom Thrust, Speed, or Specific Valve Mounting?
Contact our engineering team for custom stroke designs, special travel speeds, or bulk OEM pricing.
Dimension
HUBL2 Electric Linear Modulating Actuator External Dimensions (mm)
HUBL3 Electric Linear Modulating Actuator External Dimensions (mm)
HUBL4 Electric Linear Modulating Actuator External Dimensions (mm)
Not Sure Which Electric Linear Modulating Actuator Model Fits Your Control Valve?
Send us your required thrust, control signal, and stem/bonnet drawings—our engineers will confirm the model match and custom yoke/thread machining.
✓ Factory-Direct B2B Pricing
✓ 15–25 Days Lead Time
✓ Custom Brackets & Stem Threads
✓ OEM Labeling & Colors
✓ 15–25 Days Lead Time
✓ Custom Brackets & Stem Threads
✓ OEM Labeling & Colors
⚡ 24-hour response for OEM specs & volume quotes
HUBL Series Electric Linear Modulating Actuator Purchase Guide
Match your control valve thrust, stroke length, electric control requirements, and mechanical mounting specs using the three steps below.
| Step 1: Pick the Model by Valve Size, Stroke & Thrust | Step 2: Check Power Supply & Electric Modulating Signals |
| Power Supply: Available in 110V AC, 220V AC, 380V AC 3-phase (50/60 Hz), or 24V DC with direct on-screen push-button calibration.
Control Input & Feedback: Continuous modulating via 4-20mA, 0-5V, or 2-10V analog control signals.
Fieldbus Protocols: Optional Modbus RTU, Profibus-DP, or HART integration for plant PLC networks. |
Step 3: Check Valve Mounting Flange & Stem Thread Specs
Match your linear control valve bonnet dimensions and valve stem thread to our standard base interface:
| Actuator Model | Base Flange OD | Bolt Holes | Stem Connection Thread |
| HUBL2 | 80 mm | 4 × Ø12 mm | M8 |
| HUBL3 | 105 mm | 4 × Ø12 mm | M16 × 1.5 |
| HUBL4 | 170 mm | 4 × Ø18 mm | M20 × 1.5 |
Step 4 / How to Order: Ordering Code Table
Compose your complete order specification code using the naming convention below:
HUBL — [ T ] — [ K ] — [ V ] — [ B ] (Series — Thrust — Control Mode — Voltage — Add-on Options)
| 1. Control Mode [ K ] M1: 4–20 mA Input & Output M2: 0–5 V Input & Output M3: 2–10 V Input & Output | Model | T(KN) | K | V | B | |||||
| M1 | M 2 | M3 | F | E | D | H | Optional Add-on Functions | |||
| HUBL1 | 1 | ● | / | / | △ | △ | △ | △ | X: Special requirements such as color customization | |
| 2. Operating Voltage [ V ] F: 24V DC E: 110V AC (50/60 Hz) D: 220V AC (50/60 Hz) H: 380V AC (3-Phase) | 2 | ● | / | / | △ | △ | △ | △ | ||
| HUBL2 | 3 | ● | / | / | ● | ● | ● | ● | ||
| 5 | ● | / | / | ● | ● | ● | ● | |||
| 3. Note [ B ] H: Internal Space Heater (for condensation protection in high-humidity/low-temp environments) X: Special OEM Options (custom housing color, custom yoke/thread machining, OEM labeling) | HUBL3 | 8 | ● | / | / | ● | ● | ● | ● | |
| 15 | ● | / | / | ● | ● | ● | ● | |||
| HUBL4 | 20 | ● | / | / | ● | ● | ● | ● | ||
| 30 | ● | / | / | ● | ● | ● | ● | |||
*The above information is for reference only. If you are interested, please consult the factory in advance; The products marked as ” △”are to be developed and will significantly extend the delivery time.
Ready to Order HUBL Linear Electric Actuators for Valve Lines?
We supply standard modulating linear electric actuators for valve manufacturers and international distributors. Submit your required model, voltage, and order quantity for wholesale tier pricing.
✓ Factory-Direct Wholesale Pricing
✓ Direct Valve Mounting (Custom Yoke & Thread)
✓ 100% Factory Inspection & CE Certified
✓ Direct Valve Mounting (Custom Yoke & Thread)
✓ 100% Factory Inspection & CE Certified
⚡ 24-hour response for distributor inquiries & batch RFQs
Hearken HUBL Series vs. HUS Series Linear Electric Actuator Technical Comparison
The HUBL series fits linear modulating valves requiring 3 kN to 30 kN thrust. For valve lines that require higher thrust, on/off operation, explosion-proof housings, or higher IP ratings, we offer the HUS linear series as part of our full lineup of electric linear actuators.
Check the table below to compare technical specs between the two series:
 |  | |
| Feature / Specification | Electric Linear Modulating Valve Actuator (HUBL Series) | Heavy Duty Intelligent Linear Electric Valve Actuator (HUS Linear Stroke Series) |
| Thrust Output Range | 3 kN to 30 kN | Up to 50 kN |
| Stroke Range | Up to 100 mm | Up to 100+ mm |
| Control Type | Smart Modulating only (4-20mA, 0-5V, 2-10V) | On/Off, Modulating, and Intelligent (ICM) |
| Ingress Protection (IP Rating) | IP65 | IP67 (Optional IP68) |
| Hazardous Area / Explosion-Proof | Non-explosion-proof | Non-Ex (Standard) / Flameproof & Explosion-proof (Optional) |
| Motor Drive Technology | Brushless DC Motor (BLDC) | Squirrel-Cage Induction Motor |
| Fieldbus Protocols | Modbus RTU, Profibus-DP, HART (Optional) | Modbus RTU, Profibus-DP, HART (Optional) |
| Manual Override | Clutchless handwheel | Spanner, Push handwheel, Clutchless handwheel |
| Three-Phase Power Supply | 380V AC | 380V / 440V AC |
How to choose:
Thrust & Valve Load: When valve closing thrust exceeds 30 kN, select the HUS Linear Stroke Series electric linear valve actuator, which delivers heavy-duty output up to 50 kN. For smaller thrust requirements, the compact HUBL Series covers linear loads from 3 kN to 30 kN.
Explosion-Proof Configuration: When orders require certified flameproof protection, select the HUS Linear Stroke Series heavy duty linear electric actuator with its explosion-proof option. For standard non-hazardous fluid lines, the non-Ex HUBL Series serves general industrial applications.
Ingress Protection Ratings: When valve packages require IP67 or optional IP68 submersion sealing, select the HUS Linear Stroke Series electric linear actuator. For standard indoor and outdoor valve assemblies, the HUBL Series provides standard IP65 weather resistance.
Control Modes & Motor Types: When supplying simple On/Off isolation, standard AC squirrel-cage motors, or modular ICM electronics, select the HUS Linear Stroke Series electric linear actuator. For continuous, high-cycle throttling via 4-20mA, choose the smart modulating HUBL Series with its brushless DC motor.
Three-Phase Supply & Phase Correction: When operating on 380V or 440V AC power with automatic phase sequence correction, select the HUS Linear Stroke Series electric actuators with ICM. For standard 380V AC applications using direct on-screen calibration, choose the HUBL Series.
Need Help Choosing Between HUBL Series and HUS Series Linear Valve Actuator?
Share your valve application and pipeline operating conditions with Hearken to receive an exact model recommendation and wholesale pricing.
FAQ About HUBL Series Electric Linear Actuator for Globe Valve
Q1: Can you customize the mounting flange and stem connection thread?
Yes. Send us your valve drawings, and we will machine the bottom flange holes and stem thread to fit your electric linear actuator for globe valve installation.
Q2: How much extra thrust should we add when sizing an industrial electric linear actuator?
When sizing an industrial electric linear actuator, add a 20% to 30% safety margin on top of your valve shut-off force to ensure tight closing under full working pressure.
Q3: What supply voltages are available for this compact linear modulating valve actuator?
We offer 110V AC / 220V AC single-phase, 380V AC 3-phase (50/60 Hz), and 24V DC options for the HUBL Series electric linear modulating actuator. Specify your operating voltage when submitting an RFQ.
Q4: Can we order different input signals besides a standard 4-20mA modulating linear electric actuator?
Yes. While standard orders ship as a 4-20mA modulating linear electric actuator (Code: M1), you can specify 0-5V (Code: M2) or 2-10V (Code: M3) input/output control modules during ordering.
Q5: How does the 4-20mA modulating linear electric actuator respond if the control signal is lost?
If the input signal to your 4-20mA modulating linear electric actuator is lost or disconnected, the internal board detects the fault right away. You can set the actuator on the side panel to stay in its last position, fully open, or fully close, while the screen shows an alarm code for fast troubleshooting.
Q6: What is the fail-safe behavior of this electrical linear modulating valve actuator during a power cut?
Standard HUBL electrical linear modulating valve actuator use a self-locking gear train and stay in their last operating position (Fail-in-Place) when power cuts out.
Q7: Can we set travel limits on these electric linear travel modulating actuators without opening the cover?
Yes. The HUBL series electric linear modulating actuator features an external setting interface. You can set the zero point, full stroke, and action direction on these electric linear travel modulating actuators without removing the housing cover.
Q8: Why does the HUBL electrical linear modulating actuator use a brushless DC motor?
Brushless DC motors eliminate carbon brush wear and reduce operating heat, making our electrical linear modulating actuator ideal for high-duty continuous modulating control.
Q9: Do you offer OEM branding and custom paint for the compact linear electric valve actuator?
Yes. We support full OEM branding for every compact linear electric valve actuator, including custom housing colors (RAL), nameplates with your logo for wholesale orders.
Q10: What is the wholesale lead time for an industrial electric linear modulating valve actuator bulk order?
Our standard lead time for wholesale batch orders of the industrial electric linear modulating valve actuator is 15 to 25 days. We keep raw component inventory on hand to ensure fast assembly and on-time delivery for high-volume orders.
Q11: What factory test reports do you supply with these electric linear travel modulating valve actuators?
Every electric linear modulating valve actuator is 100% factory tested for stroke calibration, thrust output, voltage insulation, and IP65 sealing, complete with inspection sheets and CE documentation.
HUBL Series Electric Linear Modulating Valve Actuator Troubleshooting & Maintenance
| Problem | Cause | Solution |
| T1: Actuator does not power on and display remains off | • Power disconnected or wrong voltage • Blown internal fuse • Loose terminal screws | 1. Measure incoming power terminals with a multimeter to verify supply voltage matches the actuator nameplate rating (e.g., 24V DC, 110V/220V/380V AC). 2. Check if the internal power fuse is blown. 3. Verify incoming power wires are securely screwed into the terminal block. |
| T2: Motor hums but the electric linear modulating valve actuator does not move | • Handwheel left pulled out in manual mode • Jammed valve stem or high pipe pressure • Undersized actuator thrust | 1. Push the manual handwheel fully back in to engage motor drive. 2. Disconnect the push rod from the valve stem to check if the valve is stuck. 3. Verify pipe line pressure does not exceed rated actuator thrust output. |
| T3: Actuator travels in reverse direction | • Direct/Reverse setting reversed • Control signal logic inverted | 1. Check if the valve needs Direct Action (stem extends on 20 mA) or Reverse Action (stem retracts on 20 mA). 2. Switch the Direct/Reverse action setting directly on the external operation panel. |
| T4: Actuator hunts or oscillates around setpoint | • Unshielded cable / signal noise • Deadband setting too narrow • Loose feedback linkage | 1. Use shielded control cables for signal wiring and ground the shield at one end only. 2. Increase the deadband setting slightly on the side operation panel. 3. Check position feedback linkage for mechanical play or loose bolts. |
| T5: Valve fails to shut off tightly (seat leakage) | • Incorrect zero travel limit • Foreign debris trapped in valve seat • Excessive differential pressure | 1. Reset the zero position on the side panel to drive the plug firmly into the seat. 2. Verify pipe differential pressure is within rated thrust capacity. 3. Check the valve plug and seat for wear, scratches, or trapped debris. |
| T6: 4-20mA modulating linear electric actuator feedback does not match actual valve position | • Feedback stroke uncalibrated • Loose feedback terminal wiring | 1. Measure output loop current with a multimeter to verify the mA signal. 2. Run a full stroke auto-calibration on the operation panel to reset feedback range. 3. Check feedback wiring terminals for loose connections. |
| T7: Actuator stops mid-travel with stall alarm triggered | • Scale, dirt, or rust on valve stem • Thermal expansion of valve parts • Mechanical binding | 1. Inspect the valve stem for dirt, scale, or rust buildup. 2. Disconnect the push rod and move the valve by hand to check for mechanical binding. 3. Check if high fluid temperature caused valve parts to expand and jam. |
| T8: Clutch handwheel is stiff to pull out or fails to move the push rod during power cuts | • Gear teeth misaligned • Dirty shaft or broken drive pin | 1. Turn the handwheel slightly left and right while pulling outward to engage gears. 2. Clean away dirt or debris on the sliding handwheel shaft. 3. Verify the internal drive pin is not broken if the handwheel spins freely. |
| T9: Push rod on the electric linear travel modulating actuator tilts or runs off-center | • Misaligned mounting flange • Uneven bolt torque on guide pillars | 1. Loosen mounting bolts and align the push rod with the valve stem center line. 2. Make sure both guide pillars are straight, level, and tightened evenly. 3. Tighten mounting flange fixing screws in a diagonal cross pattern. |
| T10: Moisture or condensation found inside the electrical linear modulating actuator housing | • Unsealed cable entries or loose glands • Internal heater unpowered in humid area | 1. Seal all unused cable entries with IP65-rated threaded blind plugs. 2. Tighten cable glands and form a downward drip loop on field wiring. 3. Wire and power on the optional internal anti-condensation heater (Code: H). |
[HEARKEN] OEM & WHOLESALE
