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Flowserve
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34 Series
User Manual
4 pgs141.27 Kb0

Flowserve 34 Series User Manual

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Worcester Controls
DESCRIPTION
Pneumatically powered, 1/
4
turn valve actuator using modified scotch
yoke mechanism to match torque requirements of ball valves.
CAUTION: Flowserve recommends that all product which must be stored prior to installation be stored indoors, in an environment suitable for human occupancy. Do not store product in areas where exposure to relative humidity above 85%, acid or alkali fumes, radiation above normal background, ultraviolet light, or temperatures above 120°F or below 40°F may occur. Do not store within 50 feet of any source of ozone.
A. INSTALLATION
CAUTION: Ball valves can trap pressurized media in the cavity. If it is necessary to remove any valve body bolts, stem nuts, or remove valve from the line, and if the valve is or has been in operation, make sure there is NO pressure to or in the valve and operate valve one full cycle.
1. Mounting (In-line)
NOTE: It is not necessary to remove any valve body bolts or remove valve from line in order to mount actuator.
a. Close valve (valve is closed when flats on stem are
perpendicular to the line of flow). If valve information is marked on stop plate or handle, it will be necessary to transfer this information to the bracket nameplate.
For
1
/
4"–2" 44,
1
/
4"–1
1
/
2" 59 Series top-mount style valves and
1
/
2"–2" 51/52,
1
/
2"–1
1
/
2" 82/83 Series valves with high-cycle stem
packing as standard, remove handle nut, lockwasher, handle, separate stop plate (if any), retaining nut and stop pin(s). Add the two additional Belleville washers with their larger diameter sides touching each other. Add the self-locking nut to the stem and tighten while holding the stem flats with wrench. Tighten until Belleville washers are flat, the nut will “bottom”, and then back nut off
1
/
3 of a turn. The two additional Belleville washers
and the self-locking nut are included in the mounting kit.
CAUTION: The self-locking stem nut is difficult to tighten, and must fully flatten Belleville washers before backing off.
For 2" 59, 82/83 and 2
1
/
2" 45 valves, remove handle assembly,
retaining nut, stop and stop screws. Replace with valve stem spacer or, if valve has graphite stem packing, with two Belleville washers, and replace retaining nut.
NOTE: Belleville washers are installed with larger diameters touching each other. Using a wrench to prevent stem from turning, tighten retaining nut until stem packing is fully compressed or Bellevilles, if used, are fully flattened, then back off nut
1
/
6 turn. Excessive tightening causes higher
torque and shorter seal life.
NOTE: Valves with V51 high-cycle stem packing option installed, identified by two Belleville washers installed and handle assembly, stop and stop screws removed, do not require stem area disassembly.
b. Attach mounting bracket to actuator using four (4) cap
screws and lockwashers, provided in mounting kit, and tighten securely. For small size top-mount style valves, attach bracket such that bracket nameplate will be to side of valve. Place coupling on valve stem.
c. Check position of indicator flats on top of actuator shaft. If
they are parallel to the line, they indicate “Open”, if perpendicular, “Closed”. Be certain the porthole in the ball and the indicator flats of the shaft agree.
08932-F
Series 34 Pneumatic Actuator
Installation, Operation and Maintenance Instructions
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/Three­way 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: double­acting 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 high­temperature option is being used. (High-temperature option not available with solenoid.)
Flow Control Division
Worcester Controls
08932-F Series 34 Pneumatic Actuator 3
C. MAINTENANCE
1. During operation, the only maintenance required is periodic inspection of all fittings and fasteners for tightness.
2. If the unit fails to function, use the following checklist.
a. Check assembly in line:
1. Adequate air pressure? (60 to 125 psi) (80 TO 125 psi on spring-return.)
2. Adequate volume? (
1
/
4" tubing minimum for supply.)
3. Speed control screws backed off?
4. Electricity? (Adequate voltage.)
5. Solenoid operational? (Listen for a clicking sound.)
6. Valve operative? (Manually)
7. Actuator operative? (Manually)
b. When de-energized:
If exhausting continuously from solenoid port, replace piston or solenoid.
If exhausting continuously from block port, replace spool cartridge in block.
D. REBUILDING
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.
Following replacement of any parts, reassembly is essentially the reverse order of the following instructions. Please note that the instructions are separated into the various subassemblies should the disassembly involve only one part of the entire actuator.
When reassembling actuator, grease pins, links, shaft, and piston with a lubricant appropriate for the temperature of the service. Petroleum jelly is suitable for most applications.
Prior to beginning disassembly, disconnect air and electrical connections and remove actuator from valve.
1. Solenoid Valve Block and Associated Parts
a. Unscrew solenoid assembly from valve block by turning
counterclockwise. Remove O-ring from solenoid cavity in valve block.
b. Remove tubing assembly (if any) by loosening fittings.
Remove valve block from housing by removing the two mounting screws.
c. If spool cartridge must be removed from the block, remove
snap ring first (snap ring must be replaced with stamped numbers visible, solidly seated in its groove), then the cartridge itself, noting its position, and exercising care in not damaging O-rings. Care must be taken in reinserting into the valve block to avoid damage to O-rings. Cartridges are not used on spring-return units.
2. Cylinder
Using a strap wrench, turn cylinder counterclockwise until locking wire (which will protrude through side) can be removed. Pull cylinder from the housing.
3. Housing and Linkage
a. Remove retaining ring and washer from top of shaft.
b. Deburr shaft and remove by pressing down through housing.
c. Remove piston links, pins and lever by pulling piston away
from housing.
d. Links may now be lifted off pins and piston may be removed.
4. To disassemble a spring-return actuator follow instructions as in Steps 1, 2 and 3 above plus:
a. Remove snap ring clip and end plate from rear of cylinder
assembly and remove spring assembly.
b. Remove spring compression bolt from inside of flange at rear
of spring assembly.
E. RECOMMENDED SPARE PARTS:
REBUILDING KITS
1. The spare parts recommended for the Series 34 Actuators are contained in pre-packaged kits which are available through your Worcester Controls Distributor. When ordering repair kits, give actuator size, style and revision number.
Example: ARK34SN R1
When ordering parts, specify size and model of actuator and revision number and use the standard nomenclature shown on the accompanying exploded drawings.
Example: B34N R1 Link
Flow Control Division
Worcester Controls
Flow Control Division
Worcester Controls
Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specific data and warnings for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for the proper sizing and selection, installation, operation, and maintenance of Flowserve products. The purchaser/user should read and understand the Installation Operation Maintenance (IOM) instructions included with the product, and train its employees and contractors in the safe use of Flowserve products in connection with the specific application.
While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not be considered certified or as a guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding any matter with respect to this product. Because Flowserve is continually improving and upgrading its product design, the specifications, dimensions and information contained herein are subject to change without notice. Should any question arise concerning these provisions, the purchaser/user should contact Flowserve Corporation at any one of its worldwide operations or offices.
For more information about Flowserve Corporation, contact www.flowserve.com or call USA 1-800-225-6989.
FLOWSERVE CORPORATION FLOW CONTROL DIVISION
1978 Foreman Drive Cookeville, Tennessee 38501 USA Phone: 931 432 4021 Facsimile: 931 432 3105 www.flowserve.com
© 2003 Flowserve Corporation, Irving, Texas, USA. Flowserve and Worcester Controls are registered trademarks of Flowserve Corporation. 08932-F 9/03 Printed in USA
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