• Sizes from 2 to 20 inches with ANSI Class 125/150 lug pipe
connections.
• Bi-directional flow.
• Modified equal percentages flow characteristic.
• Extended neck for 2 inches of pipe insulation.
• Nylon 11-coated, cast iron disks for corrosion resistance,
reduced friction and use of lower-torque actuators with
larger valves body sizes.
• Cast iron valve body polyester-coated for weather,
chemical, ultra-violet, abrasion, and impact protection.
• Stainless steel valve stem with close-tolerance internal
double-D disk connection with no points for corrosion
access.
• Peroxide-cured EPDM resilient valve seat doubles as
flange gasket.
APPLICATION
The VFF1/VFF2 two-way and VFF3/VFF6 three-way flanged,
resilient-seated butterfly valve assemblies provide compact,
two-position and modulating control of hot water and chilled
water-glycol solutions in heating, ventilating, and air
conditioning (HVAC) systems. Valves sizes range from 2 to 20
inches. Valves with full-cut disks provide up to 175 psi closeoff.
These valve assemblies are shipped with factory-mounted
electric or pneumatic actuators with a variety of control signal
inputs. VFF2 two-way bodies are also available as nonactuated models with either lever or gear manual operators for
use as shut-off and balancing valves.
Spring-return actuators are available in normally open (VFF1)
or normally closed (VFF2) two-way configurations.
Three-way valve assemblies consist of a pair of 2-way valve
bodies with a common actuator mounted on a standard, iron
pipe Tee. Either A-B-AB porting (VFF3) or A-AB-B porting
(VFF6) is available. The A-port is factory-set to the normally
closed position, but the linkage assemblies are fieldadjustable to seven other configurations.
• Bubble-tight seat leakage at rated close-off.
• Close-off rating of 175 psid in sizes 2 in. to 12 in. with fullcut disks.
• Close-off rating of 150 psid in sizes 14 in. to 20 in. with fullcut disks.
• 250 psi end-of-line close-off pressure rating with nonautomated valves.
• Available with four, factory-installed electric actuation
interfaces in 24V and 120V power: 2-position spring return,
Floating (“tri-state”), Modulating (2-10 Vdc), Modulating/
Floating Spring Return.
• Actuators available in NEMA 2 (general purpose), NEMA
4X (watertight/corrosion-resistant), and NEMA 4
(watertight) enclosures.
• Anti-condensate heaters standard with NEMA 4X and
NEMA 4 actuators.
• Declutchable override handwheel standard with NEMA 4X
actuators.
• Non-declutchable, override handwheel standard with
NEMA 4 actuators.
• Available with six, factory-installed pneumatic actuation
interfaces in low or high air pressure: 2-position spring
return, 2-position bidirectional, proportional spring return,
proportional bidirectional, positioner spring return, and
positioner bidirectional.
• Available with three, factory-installed high pressure electropneumatic interfaces in spring return and bidirectional
configurations: 24 Vac solenoid, 120 Vac solenoid, and
modulating input, available position status indicator
switches.
Two-Way Valves (VFF1/VFF2)
• Normally-open configuration (VFF1 spring return).
• Normally-closed configuration (VFF2 spring return).
• Non-automated valves available with choice of manual
lever or gear operators.
Three-Way Valve Assemblies (VFF3/VFF6)
• Mixing or diverting control.
• Standard right-angle cast-iron pipe T.
• Globe valve A-B-AB flow pattern (side B port) through
VFF3.
• Ball valve A-AB-B flow pattern (end B port) through VFF3.
• A-port configured to closed position at factory.
• Porting pattern field-configurable with valve linkage
adjustment.
Related Literature
• 63-9683 Quick Selection Guide
• 63-9271 Damper, Actuator, Valve catalog
SPECIFICATIONS
NOTE: All specifications were accurate at time of
publication. Honeywell reserves the right to
improve or discontinue products without prior
notification. To obtain the latest technical
literature, please consult the ECC website at
http://
Models: See Table 1
Dimensions: See Figures 1-11
Mounting: Bolt holes conform to ANSI B16.1, Class 125/150.
See Table 1 for models.
Body Style:
Two-way lugged butterfly valve, straight-through flow, full or
undercut disk.
Three-way ball valve, A-B-AB or A-AB-B flow pattern, full or
undercut disks.
ANSI 125/150 flanged connections. See Fig. 12.
Operating Torque: See Fig. 14
Body Size: 2 in. to 20 in.
Flow Characteristics:
Modified equal percentage up to 60° stem rotation. (See
Fig. 13.)
Body Static Pressure Rating (maximum):
Automated valves: 175 psid (1206 kPa) at 250 °F (121 °C).
Manual valves, 2 in. to 20 in.: 250 psid (1725 kPa) at
250 °F (121 °C).
175 psid (1206 kPa) at 250 °F (121 °C).
End-of-line service without downstream flange:
75 psid (517 kPa).
14 in. to 20 in.:
150 psid (1034 kPa) at 250 °F (121 °C).
End-of-line service without downstream flange:
50 psid (345 kPa).
High pressure, bi-directional pneumatic: 175 psid
(1206 kPa) at 250 °F (121 °C).
4 in. to 20 in., undercut disk: 50 psid (345 kPa) at
250 °F (121 °C).
NOTE: undercut models are not suitable for dead end
service without mating downstream flange.
Manual Valves (oversize disc)
2 in. to 20 in.: 250 psid (1725 kPa) at 250 °F (121 °C)
without downstream flange.
Controlled Media:
Water or Glycol solutions up to 50% concentration.
Not suitable for combustible gases or steam.
Temperature range: -40°F to 250°F (-40°C to 121°C).
Velocity limits for on-off service:
Fluids: 30 fps (9 m/s),
Gases: 175 fps (54 m/s)
Materials:
Body: Cast iron, polyester-coated ASTM A126 Class B.
Disk: Ductile iron, Nylon™1 1 1 c o a t e d , A S T M A 5 3 6 G r a d e
65-45-12.
Stem: 416 Stainless steel, ASTM 582 Type 416.
Seat: EPDM, food-grade.
Stem Seals: heavy duty acetal bushing, double-U cup seal,
and thrust washer.
Approvals/Standards:
Close-off: Bubble-tight design.
Honeywell NEMA 2 Direct-Coupled Actuators: UL C/US;
UL873 Plenum Rating, File N. E4436; Guide No. XAPX;
CE; C-TICK.
Industrial-grade NEMA 4X Electric/Electronic Actuators:
UL Listed, CSA Certified, CE.
Industrial-grade electro-pneumatic solenoids and transduc-
ers: UL Listed, CSA Certified, CE.
CRN: special order. Contact Honeywell product
management.
RoHS/WEEE Compliance: not applicable
Actuator Ambient Temperature Ratings:
Electric actuators: See Table 2
Low pressure pneumatic actuators: -20 °F to 150 °F (-
29 °C to 66 °C)
High pressure pneumatic actuators: -40 °F to 200 °F (-
40 °C to 95 °C).
Accessories:
VFF50-0400 auxiliary switch kit for high pressure
pneumatic actuators
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 Honeywell Environmental and Combustion Controls Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
Minneapolis, Minnesota 55422-4386
3. http:// or http://customer.honeywell.ca
International Sales and Service Offices in all principal cities of the world. Manufacturing in Belgium, Canada, China, Czech
Republic, Germany, Hungary, Italy, Mexico, Netherlands, United Kingdom, and United States.
Note: This table is intended to explain the significance of the VFF butterfly valve part numbering system, and is not a product
configuration tool. Only part numbers printed in Honeywell price books may be ordered. Please contact Product Marketing for
information and feasibility of custom configurations. Refer to figures 2 and 3 for tandem DCA configurations.
* 175 PSI [1206 KPA] CLOSE-OFF UP TO 12 INCHES [DN 300], 150 PSI [1034 KPA] OTHERWISE
**NOTE: VALVE SIZES 2 TO 3 INCHES HAVE 175 PSI [1206 KPA] CLOSE-OFF AND ARE
AVAILABLE ONLY WITH FULL CUT DISKS.
[170]
NEMA 4X (VFF3/6_W1YXA/B)
12-1/8
[68]
[188]
[198]
9-1/2
3-1/4
[191]
5-1/225-3/4
7-1/2
[307]
[217]
[406]
[221]
[115]
[320]
12-1/2
4-1/2
NEMA 4 (VFF3/6_V1Y4A/4B)
[241]
[81]
[226]
[224]
8-3/4
[257]
NEMA 4X (VFF3/6_V1YXA/B)
[198]
[68]
9-1/2
3-1/4
8-7/8
[188]
[206]
UNDER CUT DISK, 50 PSI CLOSE-OFF**
10-1/8
7-3/4
2-3/4
7-3/8
8-1/8
[206]
[257]
8-3/4
12-1/8
8-3/4
NEMA 4 (VFF3/6_W1Y4A/4B)
8-7/8
[307]
[224]
[226]
[81]
16
8-1/2
[241]
FULL CUT DISK, 175 PSI CLOSE-OFF
10-1/8
8-1/8
7-3/8
2-3/4
7-3/4
[141]
[49]
[147]
6-3/4
Fig. 5. 3-Way VFF3, VFF6 dimensions with NEMA 4/4X (industrial-grade) actuators
NOTES: FOR REFERENCE ONLY. ACTUATORS SUPPLIED MEET OPERATING TORQUE REQUIREMENTS FOR WATER-GLYCOL AND WATER
CONTROL. CHART DOES NOT APPLY TO MANUAL VALVES, WHICH USE OVERCUT DISKS.
TORQUE OF PNEUMATIC ACTUATORS VARIES WITH SUPPLY AIR PRESSURE.
ACTUATOR TORQUE REDUCTION WILL REDUCE CLOSE-OFF RATINGS OF VALVES WITH FULL CUT DISK.
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous condition.
2. Check ratings given in instructions and on the product to
ensure the product is suitable for your application.
3. Observe and follow all national, state/provincial, local
plumbing, fire and electrical codes.
4. Installers must be licensed pipe fitters, electricians and/
or service technicians. This publication requires all
installers to be trained and experienced in their trades.
5. After installation is complete, check out product operation as provided in these instructions.
6. Full close-off ratings for automated valves apply only
when valve is mounted between two flanges. Valve
close-off is de-rated when installed on one flange in endof-line service due to lack of compression on seat seal.
Close-off rating of 2 to 12 inch full cut valves mounted to
a single flange is 75 psi. Close-off rating of 14 to 20 inch
full cut valves mounted to a single flange is 50 psi.
Preparation
Safety
Honeywell assumes no responsibility for damages or injuries
resulting from non-compliance with installation instructions or
standard good practice when mounting, operating, or
maintaining the valves, even if not explicitly mentioned in the
installation instructions.
Equipment Damage Hazard:
• Foreign particles like dirt and metal chips can damage valve
seals. For trouble-free operation of the product, good
installation practice must include initial system flushing, and
chemical water treatment. The presence of excessive rust
(Fe
) in the system may void Warranty.
2O3
• Clean the lines upstream of particles larger than 1/16 inch
(1 mm) diameter (welding slag, pipe scale, sand and other
suspended particulate). Use of a 50 micron (or finer) system
side-stream filter is suggested. Remove all filters before
flushing. Use of 20 mesh strainers in the system is
recommended.
• Follow boiler or chiller manufacturer’s recommendations for
water treatment such as rust inhibitors, acidity, etc.
• Rapid increases in pH levels can create excessive
quantities of magnetite (Fe
and other components.
• Do not use boiler additives, solder flux and wetted materials
which are petroleum-based or contain mineral oil,
hydrocarbons, or ethylene glycol acetate. These may cause
the seat to swell, impairing operation. If treating system with
azole-based compounds, system must be thoroughly
flushed before filling, or resilient seat may be damaged.
Compounds which can be used, with minimum 50% water
dilution, are diethylene glycol, ethylene glycol, and
propylene glycol (antifreeze solutions).
• If installing these valves in an addition to, or retrofitting and
existing building, do not assume that the fluid in the existing
piping meets these criteria for water quality or treatment.
) in systems with iron piping
3O4
Valve Installation
Location
Select a location where the valve and actuator will be
accessible, once installed. Allow sufficient space for servicing
the valve and actuator. Clearance for valve installation is
dependent on actuator size and the valve pipe size. Refer to
Figures 1 to 6 for valve body and actuator dimensions.
1. Clean the lines upstream of the valve to remove particles
larger than 1/16 inch (1 mm) diameter (welding slag, pipe
scale, metal filings, and other contaminants) to prevent
damaging or obstructing disk operation.
2. Air should be eliminated from the system so that valves
remain full of fluid during operation.
3. To prevent interference with disk operation, a butterfly
valve should be installed at least 6 pipe diameters away
from other pipe line elements. Where this is impractical,
care must be taken to ensure free operation of the disk to
prevent damage to moving parts and actuators.
4. Proceed with installation once the system specifics
(expansion/contraction of the system and its medium as
well as operating pressures) are within tolerances.
5. Valve may be installed with actuator(s) mounted, if preferred.
Mounting 2-way Valves
1. Before installing the valve, rotate the valve stem manu-
ally to make sure that the valve stem operates freely.
Impaired stem operation can indicate that the stem was
bent by rough handling. This condition may require
replacing the valve.
2. Protect the stem from damage due to bending or
scratching.
3. For horizontal piping, install the valve so the actuator is
in any position between vertical and horizontal, but preferably above the valve. Do not install the valve with the
stem below horizontal or upside down unless splashproof or waterproof actuators are used. For vertical piping, the actuator can be mounted in any orientation. See
Fig. 15.
Fig. 15. Butterfly valve orientations for Honeywell direct
coupled actuators (DCA's)
4. Hoist valve by its body or neck only, using a nylon sling.
Do not lift by actuator, manual operator, or flange holes.
(See Fig. 16 for proper hoisting method.)
5. Mount the valve between aligned pipes. Mounting the
valve on pipes that are not aligned causes leakage at the
valve-to-pipe connection and add excess strain to flange
bolt lugs. See Fig. 17.
Fig. 18. Flange welding techniques
8. When using welded flanges, loosely assemble valve and
flanges using flange bolts with disk open about 10°. Tack
weld flanges to pipes. Remove valve from flanges to prevent heat damage and complete flange welding.
9. When flanges have cooled from welding, position the
disk in the partially open position, about 10°, keeping the
disk at least 3/8 in. (7 mm) inside the body faces. See
Fig. 19.
NOTE: The flats of the Double-D valve stem are parallel
to the faces of the disk. Valves are shipped with
the disks open slightly to avoid compression set
of the resilient seat.
M27029
Fig. 17. Proper flange alignment
6. If installing into an existing system, release system pres-
sure and drain the valve pipe section so the medium
(water or glycol solution) does not leak out of the valve
body during installation.
7. Iron valves are mechanically compatible with standard
ANSI Class 150-flat faced or raised-face steel flanges, or
with ANSI Class 125 cast iron flanges. Either neck-weld
or slip-on flanges may be used; however, Type C stub-end flanges are not recommended. See Fig. 18.
M27031
Fig. 19. Valve installation disk positions
10. Spread the pipe flanges. Taking care not to damage the
resilient seat gasket, place the body between the
flanges, and install all flange bolts. Do NOT use flange
gaskets; the resilient seat serves this purpose.
11. The disk will project into the attached piping. Before
tightening flange bolts, carefully open the disk to the full
position to ensure proper alignment and clearance of the
disk O.D. with the adjacent pipe I.D. Leave disk in full
open position. Snug bolts “hand tight” and then use
wrench to tighten bolts an additional quarter to half-turn
using a staggered pattern, as with wheel rims of a car.
Take care not to over-tighten flange bolts -- compression
of rubber increases disk friction.
12. Once bolts are tightened, carefully rotate disk to closed
13. Proceed to check out operation of actuator.
Mounting 3-way Valve Assemblies
1. Prepare piping as described in steps 1 to 8, in section
2. Mount three-way valves as shown in Fig. 23, according
3. Position the disk of the first flange to be attached in the
4. Attach the first flange and install flange bolts. See Table
5. Before tightening flange bolts, carefully open the disc to
6. Once bolts are tightened, carefully rotate disc to closed
7. Repeat steps 3 to 6 above to attach the second flange.
8. Proceed to check out operation of actuator.
MIXED
DISCHARGE
WATER TO
HEAT LOAD
63-2661—0616
133 IN-LB
(15 NM)
M27032
Fig. 20. Flange bolt installation guidelines
position to ensure disk O.D. clearance.
“Mounting 2-way Valves”, above.
to whether they are to be used for mixing or diverting
control. Note that valve ports are NOT identified on the assembly. VFF3 valve assembly is factory configured to figure 7a with A port normally closed, but linkage
may be adjusted to any position. Note that the B port in
Fig. 23 is always the side port of a VFF3 assembly. VFF6
valve assembly is factory configured to figure 7b, but linkage may be adjusted to any position. Note also that the
AB (common) port is always the side port of a VFF6
assembly. Adjust the linkage as needed prior to installa-
tion.
partially open position, keeping the disk within the body
faces. See Fig. 23.
1 for bolt specifications. Do NOT use flange gaskets;
the resilient seat serves this purpose.
the full open position to ensure proper alignment and
clearance of the disk O.D. with the adjacent pipe I.D.
Leave disk in full open position and tighten flange bolts
per required specification.
position to ensure disk O.D. clearance.
VFF3
AB
B
BOILER
A
BYPASS
PUMP
M27025
Fig. 21. Boiler bypass for reset control
Fig. 22. 3-Way mixing valve operation with coil bypass
For information on actuator (removal and mounting), refer to
the operating and maintenance data sheet included with the
specific actuator coupled to the valve. It is important to have
selected the correct actuator available for the application.
NOTE: Honeywell Environmental and Combustion Con-
trol does not recommend its products for use in
high precision, process control applications. ECC
products are designed for typical Heating, Ventilating and Air-Conditioning applications.
2. Wire actuator using specific wiring instructions that come
with each actuator.
3. Replace cover.
Notes:
• With the exception of MS4120A, Honeywell DCAs are
24Vac Class II electrical products.
CLOSE N.O.
(VOLTAGE FREE)
OPEN N.O.
(VOLTAGE FREE)
SINGLE PHASE
POWER SUPPLY
FIELD WIRING
N
L
FOR HEATER
OPTION ONLY
CLOSE
OPEN
CLOSE
O
MOTOR
C
N
ACTUATOR
BLUE
RED
YELLOW OR
BLACK
• All industrial-grade (NEMA 4/4X) actuators are Class I
devices, wired using 120Vac, 50/60Hz power.
• Pneumatic actuators are available with several electropneumatic interface options, including line and low voltage
solenoids for two-position control, and 4-20 mA server for
modulating control.
• For convenience, typical wiring diagrams are reproduced in
Figures 24-28.
A
B
C
D
1
2
3
4
5
6
7
8
9
RED
RED
BLUE
BLUE
YELLOW
BLUE
RED
BLUE
RED
YELLOW
RED
BLUE
OVERRIDE
SW
COM
(OPTIONAL)
N.C.
N.O.
HEATER
AUX OPEN
OPEN
N.C.
N.O.
CLOSE
N.C.
N.O.
AUX CLOSE
COM
COM
GREEN
CAM
RED
CAM
N.O.
N.C.
N.O.
N.C.
COM
COM
OPEN
5
GROUND
1
ACTUATOR SHOWN IN CLOSED POSITION
MANUAL OVERRIDE NOT ENGAGED
2
3
HEATER OPTIONAL
TRAVEL, MANUAL OVERRIDE, AND TORQUE SWITCHES ARE SPDT (FORM C).
4
5
DO NOT WIRE ACTUATORS IN PARALLEL.
6
DO NOT INSTANTANEOUSLY SWITCH DIRECTION OF THE MOTOR WHILE THE ACTUATOR IS MOVING; ALLOW 0.5 TO 1 SECOND BETWEEN COMMAND CHANGES.
LIMIT SWITCH:
125/250 VAC, 10 A, 1/2 HP
125/250 VDC, 0.25 A INDUCTIVE
125/250 VDC, 0.5 A RESISTIVE
TERMINAL STRIP:
14 - 22 AWG
MAX TIGHTENING TORQUE 8 IN-LBS
105°C, 300V MIN RATED WIRE
Fig. 24. NEMA 4X floating/2-position industrial-grade actuator for valves up to 18" (VFF...XA)
Fig. 26. NEMA 4 floating/2-position industrial-grade actuator for valves 14" to 20" (VFF...4A)
ACTUATOR
COM
N.O.
N.C.
COM
N.O.
N.C.
PE
OUTGOING FEEDBACK SIGNAL
AUX SPDT SWITCH/LS3
(VOLTAGE FREE)
AUX SPDT SWITCH/LS4
(VOLTAGE FREE)
INCOMING
COMMAND SIGNAL
SINGLE PHASE
POWER SUPPLY
POSITION
FEEDBACK
DEVICE
FIELD WIRING
L
N
G
Fig. 27. NEMA 4 modulating industrial-grade actuator for valves 14" to 20" (VFF...4B)
FIELD WIRING
SINGLE PHASE
POWER SUPPLY
N
L
OPEN
CLOSE
OPEN
CLOSE
ACTUATOR
1
ACTUATOR
3
4
1
ACTUATOR
3
4
1
2
M27042
Fig. 28. Unison operation of floating/2-position industrial-
grade line voltage actuators using interface relay
OPERATION AND CHECKOUT
NOTE: Proper valve close-off depends on the disk clos-
ing fully to compress the resilient rubber seats.
Valves are shipped in the slightly open position,
used for initial placement, and so that the seat
does not ‘set’ and leave a groove from the disk. It
is not recommended to leave the disk in the seat
for extended periods of time when the valve is not
installed. When installed, it is recommended to
open the valve periodically. Disk position when
actuators are removed from installed valve bodies
can be determined by noting the flats of the Double-D valve stem are parallel to the faces of the
disk.
Checkout
For instructions for operating the valve actuator, see the
specific actuator’s Product Data Sheet. Wiring terminal
connections for industrial-grade electric actuators are included
AUXILIARY SWITCHES
N.O.
A
B
C
D
E
F
1
2
3
4
HEATER
M
DC
TORQUE
SWITCHES
(OPTIONAL)
N.O.
COM
N.C.
TS2
CLOSE
N.O.
COM
N.C.
TS1
OPEN
1 234 5678
MODULATING CONTROL BOARD
9 10 11 1 2
POTENTIOMETER
N.C.
LS3
CAM
COM
LS4
CAM
N.C.
N.O.
LS2
CLOSE
N.C.
N.O.
LS1
OPEN
FEEDBACK
COM
N.C.
N.O.
COM
COM
M27041
in this publication for reference operate the control system and
check valve operation to determine that the valve stem
positions the disk smoothly through its full stroke without
binding.
Ensure that the actuator selected provides the force to position
the valve disk. For electric spring-return actuators, the actuator
provides normally closed or normally open operation on
electric power or pressure failure, depending on the valve/
actuator combination selected.
General
Spring return actuators return the valve to its normal position
(open or closed, depending on the actuator and valve selected)
in the event of a power failure. Non-spring return actuators hold
the last commanded position.
Pneumatic spring return actuators are factory configured as
normally open (VFF1) or normally closed (VFF2). VFF3 and
VFF6 3-way valve assemblies are factory configured with the A
port normally closed, but the valve linkage may be fieldadjusted to one of several other orientations.
Pneumatic actuator torque will vary proportionally to supply air
pressure. Depending on torque in excess of valve operating
requirements, close-off pressure may vary from published
ratings. With air pressure below 80 psi, high pressure bidirectional actuators will lose both seating and unseating
torque. Normally open spring return actuators will lose close
off torque. Normally closed spring return actuators will lose
opening torque. Contact Honeywell for advice on specific, nonstandard applications.
Valves with Honeywell spring return direct coupled actuators
(DCAs) are shipped with the A port normally closed. This may
be converted to normally open by removing the actuator(s),
moving the shaft hubs to the other side of the actuator, and reinstalling the actuator with the hub in its original orientation.
(See Fig. 29.) More than one DCA may be used on the valve to
achieve required operating torque.
Once both the mechanical and electrical installations are
complete:
1. Cycle the actuator to verify that the direction of rotation
suits the control sequence.
2. If the rotation direction is incorrect:
a. For 2-position control actuators: Remount actuator
on the bracket.
b. For floating control actuators: Reverse two control
signal wires (CW/CCW).
c. For analog control actuators either:
(1) Reposition reverse/direct acting switch, or
(2) Remount actuator on the bracket.
3. If the control scheme requires fail-safe operation,
ensure that, upon removal of power, the fail position
coincides with the control sequence.
4. If the fail safe position is incorrect, remove and reinstall
the actuator in the opposite orientation as follows:
a. Loosen the shaft coupling bolt using a 10 mm
wrench.
b. Loosen all other mounting bolts connecting the actu-
ator to the mounting bracket, and set aside.
c. Remove the actuator from the valve shaft.
d. Move the actuator coupling to the opposite side of
the actuator, as displayed in Fig. 29.
(1) Remove the retainer clip from the shaft coupling
and set it aside for later use.
(2) Remove shaft coupling from one side of the
actuator.
(3) Replace the shaft coupling on the opposite side
of the actuator, aligning it based on the stroke
labeling.
(4) Replace the retainer clip on the shaft coupling
using the groove of the coupling.
e. reconnect the actuator to the valve mounting bracket
by replacing the screws previously removed (step
b).
f. Tighten the shaft coupling bolt using a 10 mm
wrench.
For detailed actuator information, see Honeywell literature:
• 63-2588: MN6134, MN7234 Product Data
• 63-2607: MS7510, MS7520, MS8110, MS8120 Product
Data
TYPICAL SPECIFICATIONS
Actuated Butterfly Valve
Valve housing shall consist of polyester-coated cast iron, rated
at no less than 175 [or 250] low [or line] voltage psi at 250 F.
Valve housing shall have ANSI Class 125/150 flanges. Valve
disk shall consist of Nylon 11 coated ductile iron disk.
Aluminum, bronze, and stainless steel are also available.
Valve shall have a blow-out proof stem with two EPDM Orings. Valve shall have resilient tongue-and-groove EPDM
combination valve seat and flange seal with minimum, bubbletight close-off pressure of 50 [or 150, or 175, or 250] psi.
Valve Actuator
Fig. 29. DCA spring return actuator coupling to opposite
side of mounting shaft
By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to,
the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages,
including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you.
Automation and Control Solutions
Honeywell International Inc.
Electric control valve actuator shall accept analog modulating,
floating (tri-state), or low [or line] voltage two-position signal as
indicated in the control sequence. Pneumatic control valve
actuators shall accept low pressure signal for proportional
control, or 20 [or 80] psi air pressure signal for two-position
control in a spring [or non-spring] return configuration.
Actuators shall be provided by Honeywell. Actuator shall
provide minimum torque required for full valve shutoff position.
Wiring terminals shall be provided for installation to control
signal and power wiring.