Hearken offers a wide variety of pneumatic accessories, including triplex solenoid valves, filters, limit switches, as well as pneumatic positioners, manual mechanisms, and other accessories you’ll want to ship together.
Actuator Accessories Manufacturer
Standardized Interface Design
Hearken actuator accessories utilize internationally recognized interface standards, including NAMUR, ISO 5211, and VDI/VDE. This effectively enhances global compatibility and avoids integration challenges with your automation system due to inconsistent interfaces. Furthermore, if an actuator component is damaged, standard replacements can be readily purchased, eliminating downtime and overall system efficiency impacted by procurement difficulties.
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Focus on Producing Actuator Accessories
Hearken is a quick-install, seamlessly compatible actuator accessory for your system.
Actuator Accessories
Limit Switch Box
The Hearken Limit Switch Box is a device for mounting and protecting limit switches in pneumatic systems that detect the position of cylinders and ensure precise start/stop or direction change of pneumatic actuators through signal feedback.
Pneumatic Positioner
The Hearken Pneumatic Positioner is an industrial automation device that converts electrical signals into pneumatic signals to accurately control valve openings and regulate fluid parameters.
Manual Gearbox Operator
Hearken Manual Gearbox Operator is a kind of mechanical transmission device realized by manually rotating turbine worm gear or gear mechanism, which is used to drive valves, actuators and other equipment for position adjustment or switching control.
Namur Solenoid Valve
Hearken Solenoid Valve is a switching device that controls the air flow through electrical signals, and drives the action of cylinders or actuators, and is used to realize the automation control of pneumatic systems.
Air Filter Regulator
Hearken air filter is a device used to filter impurities, moisture and oil in compressed air to ensure the cleanliness of the air source and protect the normal operation of pneumatic components.
Bracket and Coupling
Hearken Bracket is used to fix and support pneumatic components to ensure their stable installation; Coupling is used to connect pneumatic actuator and drive device to transfer power and compensate for axial deviation, which together ensure the efficient operation of the system.
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Star Adaptor
Hearken adapters are mechanical devices used to connect pipes or shafts of different diameters to realize size conversion, and are widely used in the fields of mechanical transmission and fluid conveying.
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Actuator Spring
Hearken actuator springs provide reset force, ensuring that the actuator can automatically return to the preset position in the event of an interruption in the air supply. This ensures the valve’s safe and reliable operation.
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Actuator Limit Switch Box
ITS-100 Limit Switch Box
- Protection class: IP67
- Scope of application: valves and NAMUR rotary pneumatic actuators
- Material: Die Cast Aluminium alloy, polyester powder coating
- Shaft Material: Stainless Steel
- Functional characteristics: a variety of mounting methods, switch configuration
- Ambient temperature: -20℃ to + 80℃.
- Certification standards: CE, SIL
APL-210N Plastic Limit Switch Box
- Protection class: IP67
- Scope of application: Rotary valve position monitoring
- Material: Plastic
- Limit switch Type: 2 X SPDT Mechanical
- Installation: Directly mounted on the actuator
- Switch Configuration: Dual mechanical or proximity switches
- Ambient temperature: -20°C to + 80°C
- Certification standards: CE, SIL
APL-210N Aluminum Limit Switch Box
- Protection class: IP67
- Scope of application: Rotary valve position monitoring
- Material: Die-cast aluminum
- Installation: Directly mounted on the actuator
- Switch Configuration: Dual mechanical or proximity switches
- Ambient temperature: -20°C to + 80°C
- Certification standards: CE, SIL
APL-510N Valve Limit Switch Box
- Explosion-proof certification: ATEX
- Protection grade: IP66
- Material: Die-cast aluminum
- Shaft Material: Stainless Steel
- Mounting Bracket: Carbon Steel or Stainless Steel
- Functional features: Integrated 2 SPDT microswitches, LED indicator, spring load adjustment
- Interface: M20 cable connection
- Environment: Explosive gas and dust environments
APL-510N Valve Limit Switch Box
- Explosion-proof certification: ATEX
- Protection grade: IP66
- Material: 316 stainless steel
- Functional features: Integrated 2 SPDT microswitches, LED indicator, spring load adjustment
- Interface: M20 cable connection
- Environment: Explosive gas and dust environments
APL-310N Limit Switch Box
- Protection Grade: IP67
- Material: aluminum alloy die-casting shell
- Functional characteristics: tool-free CAM adjustment, high transparent position indicator
- Applicable fields: industrial valves, petrochemical equipment
- Ambient temperature: -20℃ to +80℃.
- Certification standard: CE, SIL
ITS-300 Limit Switch Box
- Explosion-proof grade: EXdⅡCT6
- Material: Die-casting aluminum or 316 stainless steel
- Interface Configuration: Dual G3/4” cable interface (supports 4-way customization)
- Functional characteristics: Tool-free debugging spring load mechanism
- Ambient temperature: -20℃ to + 80℃.
- Certification standards: CE, SIL
APL-410N Explosion-Proof Limit Switch Box
- Explosion-proof grade: EXdⅡCT6
- Material: die-cast aluminum + polyester coating
- Functionality: Tool-less adjustment of spring loaded cams, visual dome indicator
- Interface: Dual G3/4” cable connections
- Application: Chemical and petroleum industries
- Ambient temperature: -20°C to + 80°C
- Approvals: CE, SIL
APL-910N Stainless Steel Limit Switch Box
- Material: SS304/316 stainless steel
- Certification standard: ATEX, SIL3
- Scope of application: Pneumatic actuators
- Switch Configuration: Mechanical / Proximity / Reed Switch
- Protection grade: IP67
- Application： Chemical industry, petroleum, and other harsh environments
APL230 Plastic Limit Switch Box
- Material: Polyamide + Polycarbonate
- Protection class: IP67
- Functional features: integrated Namur mounting kit, transparent cover + flat indicator
- Interface configuration: 1-2 1/2NPT cable connections
- Area of application: Wet environments such as water treatment
- Ambient temperature: -20°C to 80°C
Approvals: CE, SIL
ALS200D Magnetic Limit Switch Box
- Type: Horseshoe-shaped magnetic sensing switch
- Mounting: Directly mounted on pneumatic actuator (NAMUR standard)
- Functional features: Dual LEDs for 0-90° status, non-sparking electronic control
- Voltage range: 5-240V
- Protection class: IP67
- Ambient temperature: -45°C to 85°C
DSL 616P Linear Type Limit Switch
- Type: Straight travel limit switch box
- Material: Transparent polycarbonate
- Sense Type: Magnetic
- Travel Range: 10-22MM
- Installation Interface: M26*1.5; M22*1.5
- Functional features: 360° swivel mounting, LED status display (red off / green on)
- Ambient Temperature: -20°C to 80°C
- Approvals: CE, SIL
Pnuematic Positioner
YT-1000R Rotary Electro-Pneumatic Positioner
Designed for quarter-turn pneumatic rotary actuators (ball & butterfly valves)
Standard 0–90° rotation with Namur shaft mounting
Supports 4–20 mA DC analog input signal
Single/double acting reversible with low air consumption (2 LPM)
Explosion-proof (Ex d II CT6 / Ex ia II CT6) and IP66 rated
Vibration-resistant design (no resonance within 5–200 Hz)
Die-cast aluminum housing for harsh industrial environments
YT-1000L Linear Pneumatic Positioner
Designed for linear pneumatic actuators and control valves
Standard stroke options: 20–40 mm, 20–70 mm, up to 100 mm
Supports 4–20 mA DC analog input signal
Single/double acting reversible with low air consumption (2 LPM)
Explosion-proof (Ex d II CT6 / Ex ia II CT6) and IP66 rated
Vibration-resistant design (no resonance within 5–200 Hz)
Die-cast aluminum housing for harsh industrial environments
YT-1200 Pneumatic-Pneumatic Valve Positioner
Pneumatic-pneumatic design for rotary actuators (0–90° rotation)
Receives 0.2–1.0 kgf/cm² (3–15 psi) pneumatic control signal
No electrical power required, ideal for pure pneumatic systems
Single/double acting reversible with low air consumption (3 LPM)
Weatherproof IP66 enclosure with die-cast aluminum housing
Compact and lightweight design (only 1.7 kg)
Operating temperature: -20°C to 70°C (-4°F to 158°F)
L8A-100 Electro-Pneumatic Positioner
- Electro-pneumatic valve positioner with 4-20mA signal input.
- Intelligent device for precise positioning of linear/rotary valves by pneumatic control.
- IP66-rated and explosion-proof.
- Die-cast aluminum corrosion-resistant housing.
- Integrated on-site opening display and feedback signal output.
- Conforms to CE and SIL certification standards.
ALP210 Smart Electro-Pneumatic Positioner
- Utilizes a microcontroller electronic control unit and PID precision algorithms.
- Equipped with keypad and LCD dot matrix display.
- Supports HART and MSBUS communication.
- The modular and compact design allows it to be adapted to harsh environments.
- The technical specifications cover a wide range of rotary and linear series with different model options.
- Warranty of 18 months and many approvals.
ALP230 Smart Electro-Pneumatic Positioner
- Intelligent PID control with high accuracy (±0.5% linearity & control accuracy)
- Available in rotary (Namur) and linear (16–100 mm) configurations
- Supports 4–20 mA input/feedback and HART protocol communication
- Built-in LCD dot-matrix display and push buttons for easy on-site auto-tuning
- Explosion-proof certified (Ex db IIC T6 Gb / Ex tb IIIC T85°C Db)
- Ultra-low static air consumption (< 2 LPM @ 0.14 MPa)
- Rugged IP66 enclosure with operating temperature down to -40°C
1500 Intelligent Electro-pneumatic Valve Positioner
- Designed for integral mounting on angle seat valves and diaphragm valves
- Supports 4–20 mA set-point signal with optional 4–20 mA feedback
Built-in LED display and keypad for fast auto-tuning and easy startup
Linear stroke control (5–50 mm) and quarter-turn angle (90°)
Single/double acting reversible with 3–7 bar operating supply pressure
High protection IP67 waterproof enclosure with M12 industrial connectors
180° rotatable interface for flexible on-site pneumatic/cable wiring
1600 Intelligent Electro-Pneumatic Positioner
Heavy-duty stainless steel design for sanitary and aggressive environments
Ideal for direct mounting on angle seat valves, diaphragm valves, and rotary actuators
Backlit LCD screen and keypad with advanced diagnostics and autotune
Multiple control options: position controller, process controller (PID), or Profibus-DP
Accepts 0/4–20 mA or 0–5/10 V input signals with binary status inputs/outputs
Explosion-proof construction with IP67 ingress protection
Stroke control up to 50 mm (linear) or 90° (rotary) with 180° adjustable body
Manual Gearbox Operator
HDM Declutch Wormgear for Pneumatic Actuator
- Purpose: Used to position valves, dampers and other partially rotating devices when covering existing pneumatic, electric or hydraulic partially rotating actuators.
- Features: Easy manual operation.
- Composition: Composed of components made of various materials.
- Adaptability: There are different models that can be adapted to a variety of specifications of the actuator, each model has the corresponding detailed dimensions, transmission ratio, rated input and output parameters.
HAM Series Worm Gearbox for Butterfly or Ball Valve
- Type: A right-angle rotary gear drive.
- Housing: Aluminum alloy precision die-casting housing is used.
- Function: Self-locking function by worm gear transmission.
- Component: Equipped with tapered roller bearings to make operation more convenient and efficient.
- Customization: Stem nut structure can be customized according to requirements.
- Mounting Standard: The mounting flange follows ISO5211 international standard.
- Protection level: Protection level up to IP67 and even IP68 in special environments.
- Composition: Components made of a wide range of materials.
- Adaptability: There are different models, each model has differences in transmission ratio, output torque, adaptable valve diameter and other parameters.
Why Choose Hearken Actuator Accessories?
High Protection
Hearken actuator accessories feature enclosures rated up to IP67, effectively protecting against dust and moisture in complex industrial environments. Furthermore, Hearken actuator accessories offer high corrosion and chemical resistance, making them suitable for applications requiring high corrosion protection, such as marine and marine applications, and chemical plants. This effectively reduces replacement frequency, extends the lifespan of your automation system, and reduces project costs.
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Designed for Harsh Conditions
Hearken actuator accessories are made of high-strength, high-toughness, and vibration-resistant materials. We also offer explosion-proof versions. Hearken actuator components are certified for ATEX, SIL3, Ex d IIB T6 Gb/Ex tD A21 IP65 T80°C, Exia IIC T4 Ga, and Ex db IIC T4…T6 Gb, ensuring continuous and stable operation even in harsh operating conditions.
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Diversity and High Performance
Our accessories cover core products such as smart positioners, limit switch boxes, gearbox assemblies, manual operators and couplings.
Our intelligent positioners support HART/Profibus/Modbus communication protocols and built-in PID algorithms to ensure ±0.1% positioning accuracy; limit switch boxes are IP67 rated and equipped with a dual-contact design; gearbox assemblies achieve a 1:1-1:100 ratio range through the die-casting process of aluminum alloys; manual actuators are equipped with a folding handwheel and a clutch mechanism to support emergency operation; Couplings are available in a wide range of configurations. the coupling can be seamlessly adapted to the needs of different shaft diameters. The manual operation device is equipped with a folding handwheel and clutch mechanism to support emergency operation;
Production
Actuator Component Production Process
Raw Material Procurement
To ensure the consistent high quality of Hearken actuator accessories, we conduct quality control from the moment we purchase raw materials. All raw materials undergo chemical composition analysis and mechanical property testing before entering production.
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Component Processing
All actuator accessories raw materials undergo various processing steps, with performance testing performed at the end of each step. Only those that pass these tests can proceed to the next step, ultimately creating a component that meets your needs.
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Complete Assembly Testing
After assembly, all Hearken actuator accessories undergo a series of performance tests, including insulation testing, stroke testing, response time testing, and endurance cycling testing, to ensure consistent product quality.
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Efficient Installation, Precise Compatibility
Quick Wiring
Hearken actuator accessories utilize standardized wiring interfaces with clearly color-coded terminals and a strategic layout for quick wiring. Hearken also provides clear wiring diagrams and remote technician support, helping you quickly identify various signal and power lines and prevent losses caused by manual wiring errors.
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Ready Installation
Hearken actuator accessories are compatible with various air supply conditions, support a wide range of air pressure inputs, and offer wide temperature adaptability, ensuring effective operation in diverse operating conditions. Every Hearken actuator accessory is factory-tested, saving you time and effort, ensuring immediate operation upon receipt.
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Your Professional Actuator Accessories Manufacturer In China
Hearken maintains a sufficient inventory of actuator accessories to respond promptly to your needs for rapid delivery.
FAQ
A: Yes, as long as the actuator follows NAMUR standards, accessories like switches and solenoids can be easily added.
A: Only if the accessory does not match the actuator’s mounting standard. NAMUR accessories usually mount directly.
A: Solenoid Valves (for control), Limit Switch Boxes (for feedback), and Air Filter Regulators (for protection).
A: ISO 5211 allows the actuator to mount to the valve. For accessories, the standard is actually NAMUR (VDI/VDE 3845).
A: Yes, our accessories follow universal ISO and NAMUR standards, ensuring compatibility with most global brands.