Accessory List

MA51-7x0x Series, MA61-720x Series
F-27382-1 © Copyright 2006 TAC. All Rights Reserved. 85
Spring Return TAC DuraDrive
®
Two-Position Actuator
Model Chart
TAC DuraDrive Linear Actuators are designed to
mount directly onto two-way or three-way globe
valves without the use of linkages. They provide
linear travel to operate valves from 1/2 to 2 in. VB-
7xxx valves and discontinued 1/2 to 1-1/4 in. VB-
9xxx valves, 2-1/2 to 4 in. VB-9xxx valves and VB-
8xxx
2-1/2 to 5 in. valves in chilled water, hot water and
steam applications up to 366°F (186°C). Linear
spring return actuators provide control of valves in
HVAC systems.
Features:
• Two position models controlled by SPST controller.
•105 lb
f
(467 N) with 1/2 in. (13 mm) nominal linear stroke,
220 lb
f
(979 N) with 5/8 in. (16 mm) or 1-1/16 (27 mm)
linear stroke.
• 24 Vac, 120 Vac, and 230 Vac models.
• Rugged die-cast or polymer housings rated for up to NEMA
2/IP54.
• Polymer housing rated for plenum use.
• Overload protection throughout stroke.
• Automatically sets input span to match valve travel.
• Compact size to allow installation in limited space.
• Manual override to allow positioning of valve and preload.
• Spring return operation, stem up.
• Direct mount to valves without separate linkage.
Part No.
Control
Action
Actuator Power Input
Linear
Stroke
Inches
Approximate Stroke
Timing in Seconds @
70°F (21°C)
Output Force
Rating lb.
(Newton)
Valve
Size
Voltage
Running Holding
50 Hz 60 Hz
DC
Amps
50/60 Hz
VA W VA W W Powered
Spring
Return
Min.
Max.
Stall
MA51-7103-
000
Two
Position
SPST
24 Vac
±20%
20-30 Vdc
5.3 4.1 5.3 4.1 0.15 1.2
1/2 in.
nominal
44
a
a
Timing was measured with the actuator mounted on a VB-7xxx valve.
19
a
105 215
1/2 to
2 in.
MA51-7103-
100
5.3 4.1 5.3 4.1 0.15 1.2
MA51-7100
120 Vac
±10%
50/60 Hz
7.9 6.2 7.9 6.2 N/A 2.1
MA51-7101
230 Vac
±10%
50/60 Hz
7.4 5.4 7.4 5.4 N/A 2.1
A51
-
7
x
0
x
r
ies,
A
61-720x
r
ies
US
LISTED
Mx51-710x