Flowserve 34 Series Pneumatic Actuator - Manual (Page 2)

2 Series 34 Pneumatic Actuator 08932-F
d. Attach bracket and actuator assembly to valve using cap
screws and lockwashers provided in mounting kit. Tighten
securely. For small size top mount style valves, bracket
nameplate will be to side of valve.
NOTE: When mounting 34 actuators to 90° Diverter/Three-
way valves (V-1 style), the actuator must be mounted across
the pipeline (defined by the two side ports of the valve).
2. Connections
a. Actuators without solenoids (“N” Models), (A34N, B34N,
A34SN, B34SN).
Air is supplied to the actuator through remote pilot or manual
air switches. With the actuator mounted in-line with the valve,
air supplied to the plate on the housing end opens the valve; air
supplied to the cylinder end closes the valve. Air connections:
“N” model actuators have two
1 /
8
" NPT connections.
NOTE: For “S” models air is not required to close valve.
b. Actuators with solenoids (A34, B34, A34S, B34S).
Normally the actuator is mounted in-line with the pipeline so
that the valve will open when the solenoid is energized and
will close when the solenoid is de-energized. (Normally
closed position).
Installation is accomplished by placing the valve and actuator
in the line and connecting the air supply and connecting the
solenoid to the proper signal source. Air connections: double-
acting or spring-return have one
1 /
4
" NPT connection.
If it is desired to close the valve by energizing the solenoid,
(normally open operation), it can be done by either of the
following methods:
1. Mount the actuator across the pipeline by removing
actuator from bracket, reinstall the actuator 90° from the
in-line position.
OR
2. Remove actuator from bracket, remove coupling and open
valve. Remove shaft from actuator by removing retaining
clip. Index shaft 90°, reinstall shaft. Reinstall coupling and
actuator. Secure actuator to bracket with mounting
screws. Be certain retaining clip is completely seated.
CAUTION: If shaft retaining clip is not properly seated,
the shaft may blowout under pressure. The clip should
be solidly in its groove with the stamped numbers
exposed.
NOTE: Double-acting units have a speed control screw in
the solenoid block and will not function if it is screwed in
all the way. The screw controls opening speed and is
shipped from the factory in the full open position.
c. Spring-return models utilize the spring to close the valve
when the actuator is mounted in-line with the valve. This may
be changed to spring to open by mounting the actuator as in
2.b.1 and 2.b.2 above.
On spring-return and double-acting models with solenoid, the
closing speed may be controlled by installing the hexagonal
nut with adjusting screw (shipped separately in envelope) on
the end of the solenoid, using the instructions received with
the nut.
B. OPERATION
1. The operation of the solenoid-controlled models requires
energizing the solenoid for one cycle (to open or to close,
depending upon mounting), and de-energizing the solenoid for
the other cycle. The air pressure should be continuously
maintained during use.
2. Air Flow
The A34 and B34 actuators require at least the equivalent of 10
CFM air at 100 psig in the supply lines. Minimum line size for
these units is
1 /
4
" OD tubing.
3. Air Pressure
All series 34 actuators require a minimum of 60 psig and a
maximum of 125 psig clean lubricated air. (80 to 125 psig for
spring-return units).
4. Air Volume (Standard Conditions) for 90° operation.
A Size – 5.09 cubic inches
B Size – 8.10 cubic inches
5. Electrical Supply (model with integral solenoid only).
The solenoid coil wattage and required amperage are as follows:
GENERAL PURPOSE SOLENOID
Holding Inrush
Voltage Amps Amps Watts
24 VAC 50/60 Hz .80 1.20 11
120 VAC 50/60 Hz .15 .30 11
240 VAC 50/60 Hz .08 .12 11
12 VDC .70 — 11
24 VDC .35 — 11
WATERTIGHT AND HAZARDOUS LOCATIONS SOLENOIDS
Holding Inrush
Voltage Amps Amps Watts
24 VAC 50/60 Hz .71 1.13 11
120 VAC 50/60 Hz .14 .23 10
240 VAC 50/60 Hz .07 .11 10
12 VDC .81 — 10
24 VDC .41 — 10
6. Ambient temperature limits: 0°F to 160°F unless high-
temperature option is being used. (High-temperature option not
available with solenoid.)
Flow Control Division
Worcester Controls