Brochure

Tunstall Corporation
118 Exchange Street • Chicopee, MA 01013
© July 2014
We reserve the right to alter designs, specifications and information without notice.
Phone [phone] · Fax [phone]
www.tunstall-inc.com • www.maconcontrols.com
Bulletin-VM-0714
Non-Electric Operators
ELECTRIC ZONE VALVE ACTUATOR
VM Series
Description
Designed for use with the Macon NT Series Valves, the
VM series electric zone valve actuator is a new concept in
zone controls. Utilizing a gearless electric thermic opera-
tor, this valve actuator operates off low power 24V AC.
Proportional control can be realized by using time propor-
tioning techniques. The VM series is ideal for control of
Radiators, Fin-Tube, Zones, Solar Panels, Heat Pumps
etc...
Features
 Normally open or normally closed
 Suitable for low pressure steam
 Low power consumption
 Noiseless operation
 Easy installation
 Compact size
 Low cost
Accessory Valve Extender for
Heat Dissipation
#MAC-NT-Valve-Ext (4032601)
Specifications
Data VMO 24 VMC 24
Voltage 24V AC 24V AC
Current, initial 200mA 200mA
Current consump. 70mA/2W 70mA/2W
Closing and
opening time ca 3 minutes ca 3 minutes
Stroke ca 4 mm ca 4 mm
Max amb. temp. 122 F 122 F
Design
Body plastic plastic
Nut brass brass
Weight 2.8 oz. 2.8 oz
Conn. cable 2x0,22 white 2x0,22 white
3 feet 3 feet
No current open closed
VMO 24 - Normally Open
VMC 24 - Normally Closed