Product Overview

Tunstall Corporation
118 Exchange Street • Chicopee, MA 01013
© July 2015
We reserve the right to alter designs, specifications and information without notice.
Phone [phone] · Fax [phone]
www.tunstall-inc.com • www.maconcontrols.com
Section: Electric Operators Bulletin-MC-VA-1015
ELECTRIC ZONE VALVE ACTUATOR
VA Series
Description
Designed for use with the Macon NT Series Valves,
the VA series electric zone valve actuator is a new
concept in zone controls. Utilizing a gearless electric
thermic operator, this valve actuator operates off
low power 24V AC. Proportional control can be re-
alized by using time proportioning techniques. The
VA 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
 Transparent zone above nut for checking the
status of the actuator.
 Red = Closed
 Black = Open
TECHNICAL DATA
VAO-24 VAC-24
Voltage 24V AC 24V AC
Current, Initial 200 mA 200 mA
Current, Consumption 1.8 W 1.8 W
Closing and Opening Time 5 Minutes 5 Minutes
Valve Stroke 2.5 mm 2.5 mm
Actuating Force 80 N ± 10% 110 N ± 10%
Ambient Temperature 32ºF to 122ºF 32ºF to 122ºF
State when OFF/No Current Normally Open Normally Closed
Housing Material / Color Polyamide / White
Nut (D) Brass (D - 28 mm)
Weight 4.94 oz.
Connection Cable / Color 1 meter long, 2 x 0.5 mm
2
, white
Width (A) 1.59” (40.5 mm)
Length (B) 1.95” (49.5 mm)
Height (C) 2.05” (52.0 mm)
ELECTRIC
OPERATORS