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ML6421, ML7421 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS
63-2515—4 2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Relations
Honeywell, 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
SPECIFICATIONS
Models:
Dimensions: See Fig. 1.
Weight: 5.1 lb (2.3 kg).
Electrical Ratings:
Power Input: 24 Vac (+10%, -15%), 60 Hz.
Power Consumption: 11 VA maximum at 24 Vac.
Signal Inputs:
ML6421:
24 Vac across T1 and W: Drives stem downward.
24 Vac across T2 and B: Draws stem upward.
ML7421: 0 to 10 Vdc or 2 to 10 Vdc.
Actuator Material:
Cover: ABS plastic.
Yoke and Base: Diecast aluminum.
Stem Force: 405 lbf (1800N).
Close-off Pressure Ratings: See Table 1.
Cable Entry: Two knockout holes for 1/2 in. conduit standard
on actuator case.
Ambient Ratings:
Temperature:
Ambient Range: 14°F to 122°F (-10°C to +50°C).
Storage Range: -40°F to +158°F (-40°C to +70°C).
Humidity Range: 5 to 95 percent relative humidity,
noncondensing.
Approvals:
Canadian Standards Association Listed.
Underwriter’s Laboratories, Inc. UL94-5V Flame Retardant
(file E181716).
Meets CE requirements.
Protection Standard: IP54.
Accessories:
43191679-101 Single Auxiliary Potentiometer for ML6421A.
43191679-102 Single Auxiliary Potentiometer for ML6421B.
43191679-103 Dual Auxiliary Potentiometer for ML6421A.
43191679-104 Dual Auxiliary Potentiometer for ML6421B.
43191680-102 Dual Auxiliary Switch (for 24 Vac use only).
43196000-001 High Temperature Kit (for actuators with 3/4 in.
stroke). Increases maximum temperature to 428°F (220°C).
43196000-102 High Temperature Kit (for actuators with 1-1/2 in.
stroke). Increases maximum temperature to 428°F (220°C).
Table 1. Close-off Ratings for ML6421, ML7421 Electric Linear Valve Actuators and Honeywell Valves (psi).
a
For use with ML6421B or ML7421B Actuators only.
b
Represents maximum pressure difference between the outlet and either of the two inlets.
c
Do not exceed 100 psi with V5011G valves used in steam applications.
d
Rating is for steam at maximum 100 psi. Ratings for water applications are the same as for the V5011N1xxx.
Model
Stroke in
in. (mm)
Run Time in
sec at 60 Hz Description
ML6421A 3/4 (20) 95 Electric Linear
Valve Actuator
ML7421A
ML6421B 1-1/2 (38) 175
ML7421B
Type Valve 1/2 in. 3/4 in. 1 in. 1-1/4 in. 1-1/2 in. 2 in. 2-1/2 in. 3 in. 4 in.
a
5 in.
a
6 in.
a
Flange V5011A,B,C — — — — — — 77 53 29 18 12
V5011B ———— — —— —
V3350/51/60/61;V3450/51/60/61 — — — — — —
63
b
45
b
25
b
16
b
11
b
NPT V5011F,G
150
c
150
c
150
c
150
c
150
c
150
c
100 61 — — —
V5011N1xxx, V5011N3xxx,
V5013N
230 230 230 230 230 126 — —
V5011N2xxx
100
d
100
d
100
d
100
d
100
d
100
d
V5013F 150 150 150 150 150 150