Ing. Westad supplies actuators for most applications. 

Most common models in stock, available for immediate delivery. 

  • Quarter turn actuators

  • Linear actuators

  • Electric actuators

  • Pneumatic actuators

  • Ex area actuators

  • Failsafe actuators


Design features Quarter Turn Electric Actuators

  • Torque range from 60 Nm to 4000 Nm

  • Wide range of operating times

  • Wide range of physical sizes

  • Limit and torque switches

  • 24 to 460 volts

  • Handwheel for manual operation

  • Mechanical Position indicator

  • Standard ISO5211 base


  • "Switched live" (relays on/off)

  • 4-20mA

  • 0-10V

Ambient Conditions 

  • High quality corrosion protection

  • Wide ambient temperature range

  • Ex-models

  • Vibration resistent model designed for ardous On-Engine use

    • Custom designed actuator and valve assembly to endure the harsh vibrations caused by large diesel engines, ships and alik

    • Used in integrated in-engine applications, hard bolted to engine block


HQ Series

• The HQ Series, electric part-turn actuator, is designed for rotary valve applications such as ball, butterfly, and plug valves.
• Listed as a World Class Korea product since 2013 with a high global market share.
• Variety of options are available.
• Lightweight, robust, and has high corrosion protection.
• Precise modulating control (250:1) as an option.
• Maximum output torque up to 3,000 Nm with 24 V dc.
• Flameproof (Ex db IIB T4) and dust ignition proof (Ex tb IIIC T135°C) enclosures as an option.
• IP68 (upto 10 m, 72 hours) as an option.
• Communication (PROFIBUS, MODBUS, CANOpen) options.

HKC is a professional manufacturer specialize in the production of actuator and its accessories in the field of automated valve. All HKC’s actuators are precisely designed, developed, and by quality technicans to satisfy diverse customer needs.

In global, HKC products are used in more than 40 countries and have obtrained various international approvals (IECEx, ATEX, CSA, EAC, SIL, etc.). Through constain, intensive quality competition, HKC is recognized as a leading corporation in the field of valve automation.

Features HKC Actuators: HKC Electric multiturn IECE Ex). Features: Robust and light weight with high grade aluminum alloy housing. High corrosion resistance. Direct output range from 35 Nm to 3000 Nm Wide LCD window & smart design Valve torque indication, partial stroke, speed control Rugged design construction (IP67) actuator mechanical worm gear system.Declutching manual override system Option: IP68, Ex db IIB T4, Ex db IIB H2 TA Manual override handwheel Valve torque indication Setting tool (infrared setup)

Easy Setting Manual handle Available in 1-phase and 3-phase All motors are custom built for high torque Separately sealed terminal compartment low current and the highest duty cycle ratings offered Easy mounting base Cover and housing Terminal box High corrosion-resistance due to anodizing on the inside/outside

Position control system and polyester powder coating on the outside HKC Electric linear actuators Compact and lightweight Rated current {A}, (50/60 Hz)

High corrosion resistance ac, 1-phase, 50/60Hz ac, 3-phase, 50/60 Hz turn Wide range of voltages available. Standard Specification. Enclosure Weatherproof enclosure (P67) Power supply 24V/110/220V ac 1 ph, 50/60 Hz | 380/440/440 V ac 3 ph, 50/60 Hz, +10% Duty cycle [on-off] S2 30 min [room temp., average load of 50% of max. force] Design Construction Duty cycle [modulating] S4 40-70%, 800-1200 starts/hour (room temp., average load of 50% of max. force] Motor Induction motor (reversible motor] Position control unit Actuator cover Limit switches Open/close, SPDT, 250 V ac 16A rating Limit switches & potentiometer Polyester powder coating with high corrosion resistance Additional limit switches Open/close, SPDT, 250 Vac 16 Arating [except HL-O5KN & HL-07KN} Force switches Open/close, SPDT, 250 V ac 16A rating Stall protection/operating temp. Built-in thermal protection, open at 150+5 °C / close 1-phase, 3-phase and 24V PCU Manual override Declutching mechanism Proportional control unit Self Locking Provided by double worm gear Force switch [4-20 mA, 0-10 V, 2-10 V, 1-5 V) Space heater HL-O5KN, 07KN: 5 W (12/24 V dc, 110/220 V ac), HL-10KN to 25KN: 10 W (12/24 V de, 110/220 V ac), anti-condensation Cable entries Standard: 2 x PF3/4", Flame proof: 2 x NPT3/4" or 2 x M25

Housing 4 | SF Lubrication Standard: grease moly (EP type], option: Tribolube-18 (for low temp.] Terminal block Spring loaded lever push type Declutch lever & Materials Steel, aluminium alloy, aluminium bronze Manual hand wheel Ambient temperature Standard: -20 to +70 °C, Option: -20 to +60 °C [flameproof] Pad lockable for maintenance safety Ambient humidity 90% Max. RH [non-condensing] External coating Anodizing treatment and polyester powder coating Force spring housing

HKC actuator models: HQ-008, HQ-010, HQ-015, HQ-020, HQ-030, HQ-050, HQ-060, HQ-080, HQ-120, HQ-200, HQ-300

Auma Actuator Products

In process technology plants, liquids, gases, vapours, and granulate need to pass through pipelines. Industrial valves are used to inhibit or release medium flow as well as to control the resulting flow rate by opening or closing the valves. AUMA actuators are remotely controlled from the control room to operate valves. Multi-turn actuators: Electric multi-turn actuators by AUMA are used e.g. for the automation of gate valves or globe valves. They are the most versatile products within the AUMA family. Actuators SA and SAR: 10 Nm to 32,000 Nm. Variable speed actuators SAV / SARV

10 Nm to 1,000 Nm. Variable speed actuator SEVEN. 9 Nm - 4,000 Nm.

Auma Part-turn Actuators: Electric part-turn actuators by AUMA are used where an automatic, electrically operated movement at a swing angle of less than 360 ° has to be implemented as it is the case for valves like butterfly and ball valves. Actuators SQ and SQR. 50 Nm to 2,400 Nm. Variable operating time actuators SQV / SQRV. 150 Nm to 2,400 Nm.

FQM/FQMEx Fail safe unit: 150 Nm to 1,200 Nm.

Linear actuators: To perfom linear movements, e. g. in case of globe valves, the Auma multi-turn actuator SA can be combined with the linear thrust unit LE, forming an electric linear actuator. In case a lever arrangement has to be operated, the linear thrust unit can be mounted on a base.

Combinations with linear thrust units: 4 kN to 217 kN Actuators SDL/SDG 2 kN to 15 kN.

Multi-turn gearboxes: Multi-turn gearboxes can be formed by combining multi-turn actuators SA ... with AUMA spur and bevel gearboxes to increase the torque or to reposition the output shaft. The gearboxes can of course also be used on manually operated valves.

Spur gearboxes GST: Spur gearboxes for torques up to 16,000 Nm. With or without second shaft end

Lifetime according to EN 15714-2. High quality corrosion protection with AUMA powder coating.

Bevel gearboxes GK: Bevel gearboxes for torques up to 16,000 Nm. Low-noise and noise-efficient operation with face-hobbed Palloid® gears. Lifetime according to EN 15714-2. High quality corrosion protection.

Multi-turn gearboxes GHT: High-performance worm gearbox for torques up to 120,000 Nm

Lifetime according to EN 15714-2. Sized for AUMA actuators. Used as screw jacks up to a maximum stem diameter of 180 mm. AUMA part-turn gearboxes are used wherever a 90° swivel movement is required for the operation of a valve or damper.

Gearboxes GS: Up to 675,000 Nm. 0° to 190° and multi-turn version. IP68. All types of duty.

Gearboxes GQB: 21,000 Nm to 84,000 Nm. 90° +/-5. IP67. OPEN/CLOSE duty.

Gearboxes GHE: 125 Nm to 1,000 Nm. 82° to 98°. IP67. Manual operation. Controls.

Product selection in favour of actuators with integral controls saves time-consuming project planning, installation, and additional documentation which is required when selecting external controls.

Auma AC: Microprocessor-based controls with comprehensive functions. Explosion-proof versions AC. Ex de IIC/IIB T4 or T3. Ex d IIC/IIB T4 or T3.

AC SIL and ACEx SIL: To be used up to SIL 2, in redundant systems (e.g. "1oo2“) up to SIL 3

Communication systems: Parallel control, fieldbus, or both for reasons of redundancy? When opting for fieldbus, which protocol to use? Irrespective of your decision on the interface, AUMA actuators can be equipped with the suitable interface to match all systems established within process control engineering.

Fieldbus: Industrial Ethernet. HART.