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Built tough, certified safe, engineered for harsh duty.







Hearken is a professional explosion-proof electric actuators manufacturer and global supplier in China. We build explosion-proof electric actuators to isolate risks in volatile process areas. Our explosion-proof (Ex d) enclosures use precision-machined joints to trap internal electrical sparks inside the casing. This explosion proof actuator enclosure completely stops external ignition in hazardous gas or dust environments. Hearken electric actuators drive both multi-turn valves and linear stroke valves efficiently. They eliminate the need for complex pneumatic air lines or high-maintenance backup batteries. For complete control system safety, our internal architecture strictly separates high-voltage motor power from low-voltage, intrinsically safe (Ex i) signal circuits.
Each Hearken actuator uses an aluminum alloy shell. The shell is anodized and then coated with polyester powder. This surface treatment withstands aggressive field conditions. We perform 100% factory testing on every single unit. This guarantees exact torque and thrust outputs. This testing also verifies structural sealing and prevents signal failures on your job site. We fully support global OEM partners and distributors. Our team provides dependable 15–25 day lead times for bulk production. We offer custom actuator housing colors to match your brand identity. Additionally, we provide specialized nameplate personalization to meet your precise market requirements.
Hearken explosion-proof electric actuators accurately control valve opening. This makes your automation system more efficient and safer.

The HEX explosion-proof actuator fits into tight spaces. Its explosion-proof design ensures safety in industrial applications.

The HQT quarter-turn explosion-proof electric actuator drives and controls butterfly, ball, and plug valves. This unit supports remote and local control.

The HMT on-off explosion-proof valve actuator controls valve open-close through multi-turn motion. This setup provides quick response times.

The HQ actuator uses an integrated flameproof design for 90° rotary valves. This setup automates small to medium butterfly and ball valves without bulky external installations.

The HMT intelligent modulating multi-turn electric actuator is an industrial-grade precision control device. The integrated smart control module allows remote automatic valve regulation.

HMT(R) terminal boxes rotate 90°, ensuring the cable inlet always faces downwards. This design blocks rain and dust to prevent electrical failures.

The HUS quarter-turn explosion-proof electric actuator features a rugged, compact build. It offers on-off or modulating control for reliable valve automation.
Hearken explosion-proof electric actuators carry ATEX, SIL3, and CNEX certifications. The electric actuator features Ex db IIC T6 Gb and Ex tb IIIC T80℃ Db markings. The explosion-proof electric actuators operate stably in Zone 1 and Zone 2 hazardous areas. The flameproof enclosure design strictly complies with GB3836.1-2021 and GB3836.2-2021 standards. The housing contains internal explosion pressures to prevent outward flame propagation. The heavy-duty construction eliminates the risk of igniting surrounding gases or dust.


Explosion-proof electric actuators feature multiple intelligent protection and alarm functions. The equipment monitors torque, voltage, and motor status in real time. System configurations include valve position feedback, over-torque/over-thrust protection, over-temperature alarms, disconnection alarms, and PST success signals. Additionally, the non-intrusive design simplifies field commissioning to reduce production line downtime.
Hearken configures standard production lines from 380VAC to 440VAC three-phase power. The company supplies reliable ON/OFF models for standard PLC/DCS digital signals. Hearken also provides smart modulating models for precise proportional control. The team matches these standard options directly to project specifications. This manufacturing capability shortens factory lead times.


Hearken explosion-proof actuators feature standard ISO 5211 connections. The equipment mounts directly onto compatible valve interfaces. This design eliminates custom brackets and complex mechanical adaptations. It shortens field commissioning time.

Hearken offers an optional weatherproof configuration. The system includes internal space heaters and dedicated fault signal channels. This anti-condensation setup prevents moisture build-up. It safeguards valves in high-humidity environments.
Hearken serves as a specialized production base for hazardous-area automation supply chains in China. The factory matches exact flameproof torque and thrust profiles to your valve assemblies. Hearken team provides strict technical selection, mass production, and complete explosion-proof certification documentation. These compliance files support local safety audits.
Working directly with the Hearken factory ensures a steady supply of explosion-proof electric actuators. This direct sourcing cuts out middleman markups. The reliable delivery protects your local sales channels. Contact Hearken today for distributor pricing and production schedules.
Cast aluminum alloy.
Explosion-proof cables and connectors must be used during wiring. Ensure the wiring is secure and reliable. Refer to the instruction manual or consult the manufacturer.
Explosion-proof ratings are classified according to the hazard level of the application environment.
Yes, we do! Hearken Flow holds official ATEX and CNEX certificates for both Zone 1 and Zone 2 hazardous areas. Our standard ratings cover Ex d IIB T4, Ex d IIC T4, and Ex d IIC T6. We also provide certified options for dust-ignition proof environments.
We manufacture both. Hearken Flow provides complete lines of explosion-proof quarter-turn actuators and electric linear actuators. Both series work perfectly with 4-20mA analog modulating control or standard ON/OFF switches.
No, we do not make explosion-proof spring-return electric models. If you need emergency fail-safe shut-off, you can easily pair our standard explosion-proof electric actuators with an external UPS battery backup. Alternatively, you can switch to our pneumatic spring-return actuators.
Yes, absolutely. Dual-certified explosion-proof electric valve actuators are standard in many plants. They are the ideal choice for hybrid hazardous areas where explosive gases and dense dust overlap.
For heavy-duty electric actuators, you need Flameproof enclosures. These motorized drives run on high voltage (220V/380V), so Intrinsically Safe (Ex ia) is physically impossible for the main power connection due to energy limits. Instead, we use a reliable combination of Ex db IIC T6 (Flameproof) and Ex tb IIIC T80°C (Dust Protection):
Note: Ex ia only applies to low-voltage control signals (like 4-20mA feedback) through safety barriers. For non-hazardous areas, a standard weatherproof (IP67/IP68) is all you need.
Yes, we do. Our HUSL series explosion-proof electric linear actuators deliver an IP67 protection grade. They carry dual-certified ratings of Ex d IIC T6 Gb and Ex tb IIIC T80°C Db.
Yes. Hearken Flow offers the HMT and HMT(R) series of multi-turn explosion-proof electric actuators to handle your requirements.