HVAC Actuators - Refrigeration and HVAC

HVAC actuators are electric, pneumatic, or spring-return drives used to operate dampers, valves, and air-control devices in marine ventilation, air-conditioning, refrigeration, and chilled-water systems. They provide controlled airflow, temperature regulation, isolation, and fail-safe positioning.

ProShipWorks provides end-to-end support to source and supply HVAC Actuators for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated: October 11, 2026

Product Information

Product Name	HVAC Actuators
Product Category	Refrigeration and HVAC
Product Reference	1479
Brands / Manufacturers	Belimo, Danfoss, Siemens, Schneider Electric
Unit of Measure	Piece

Key Features

Key Feature
1. Electric or pneumatic operation
2. Modulating or two-position control
3. Spring-return fail-safe versions
4. Manual override for commissioning
5. Suitable for dampers and control valves

Applications of HVAC Actuators

Application
1. Marine ventilation and air-conditioning dampers
2. Chilled-water and heating-water control valves
3. Refrigeration plant and machinery-space HVAC systems

Models & Manufacturers

Model	Manufacturer
LM24A	Belimo
LF24	Belimo
NM24A	Belimo
AME 435	Danfoss
AMV 23	Danfoss

Technical Specifications

Model	Specification	Value	Unit
LM24A	Supply voltage	24	VAC/DC
LM24A	Control type	Proportional	—
LF24	Supply voltage	24	VAC/DC
LF24	Function	Spring-return damper actuator	—
NM24A	Supply voltage	24	VAC/DC
NM24A	Nominal torque	10	Nm
AME 435	Control signal	Modulating, model-dependent	—
AMV 23	Application	Valve actuator	—

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification	Applicable requirements may include IEC 60730 for automatic electrical controls, IEC 60092 for electrical installations in ships, and EMC requirements under IEC 60945 where applicable. Exact compliance depends on actuator type, installation, and manufacturer certification.
Class Approval	Marine class approval is generally applicable to the complete HVAC or control system rather than every actuator individually. Where required, verify product or system approval with DNV, ABS, Lloyd's Register, Bureau Veritas, or ClassNK and confirm the vessel specification.

Installation, Maintenance & Safety Information

Installation Notes	Verify voltage, control signal, torque or thrust, stroke, rotation direction, mounting arrangement, environmental rating, and fail position before installation. Install in accordance with the manufacturer manual and vessel wiring drawings. Protect against condensation, excessive vibration, and corrosion.
Maintenance Tips	Inspect mounting, linkage, wiring, terminals, seals, and corrosion periodically. Test full travel, feedback, and fail-safe operation during HVAC maintenance. Keep damper and valve mechanisms free from fouling and do not exceed the actuator torque or stroke rating.
Safety Notes	Isolate electrical and pneumatic power before installation or servicing. Follow shipboard lockout and permit-to-work procedures. Confirm the actuator cannot move unexpectedly, use suitable marine-rated cabling and glands, and maintain hazardous-area restrictions where applicable.