CMV - Control drive large enclosed actuator

DESCRIPTION

CMV pneumatic actuator system consists of an actuator and a manual override integrated into a steel housing which is also a portable structure. This rugged construction guarantees continuous operation in harsh environments, for example in power stations, steel industries, petrochemical plants, desert areas, etc.
This actuator is able to control final elements like dampers or hydraulic converters with high power actuators. In this actuator, the housing provides a double function of protection and a bearing frame.
The engaging of the manual control is made automatically or manually through a dedicated switch.

PLUS

    • Designed for a long operating life
    • Easy installation of a wide range of accessories on a separate internal panel
    • Easy maintenance
    • Internal linear SC actuator with built-in permanent lubrication system
    • Balancing Security Sensor device (BSS) to switches automatically from manual function to modulating with signal only when the signal matches position where actuator is mechanically locked from manual override
    • Manual override built-in as standard
    • No competitors have such a wide range of products

TECHNICAL DATA

Operating pressure

Pneumatic version up to 10 barg

(special version available on request)

Standard operating temperature

-20°C to 70°C

(lower or higher temperature on request)

Sizes for CMV-1

125/250

160/200

200/200

Sizes for CMV-2

160/300

200/300

260/300

Sizes for CMV-3

260/400

330/400

 

Sizes for CMV-4

390/450

420/450

520/450

Lever features 

70° operating angle 

Housing

Carbon steel

Certifications/approvals

PED 2014/68/EU

ATEX 2014/34/EU

IP66 according to IEC/EN 60529

Further certifications are available, please contact us for updated list.

HIGHLIGHTS

IMI STI valves, actuators, positioners, CM Series, CMV - Control drive large enclosed actuator

SC series of actuators is provided with a built-in permanent lubrication system, patented by IMI STI, which assures an extremely smooth valve operation even if dry instrument air is used. Thanks to this lubrication system, which is common to IMI STI linear actuators, no maintenance to moving parts is required, even after many years of continuous service.

The patented lubrication system consists mainly of a grease lubricant filled annular cavity placed inside the cylinder piston, between a sealing ring and a sliding ring to avoid direct contact between the metal surfaces of the piston and the cylinder, even in case of lateral forces acting on the actuator stem. The grease in the annular cavity keeps the metal parts lubricated during piston movement allowing very smooth sliding and a long seal life.