Flowserve Heavy Duty Actuator - Manual (Page 3)

© 2001, Flowserve Corporation, Provo, UT
Automax Valve Automation Systems
Installation, Operation and Maintenance Instructions
Flowserve Corporation 765 South 100 East Phone: 801 373 3028
Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228
Automation Business Unit www.flowserve.com E-mail: [email protected]
A00032-1 GU (AUTO-9) 5/01 Page 3 of 4
Buna - R (Actuator Base Model No.) SKB
Viton - R (Actuator Base Model No.) SKV
ie., Buna Seal kit for R312SR80 is R312SKB
Standard Nitrile -20
°
F to 175
°
F
High Temp. Viton 0
°
F to 300
°
F
Reassembly Procedures
1. Inspect all parts for wear and replace any worn parts as
needed. Normally, all Seals and Gaskets should be
replaced when reassembling an actuator.
2. Clean and grease all components with a multi-purpose
"polymer" fortified grease such as DuBois Chemical
MPG-2. For low temperature units use Dow Corning
®
55 low temperature grease.
3. Reverse the disassembly procedures to reassemble.
Use the proper torque from the torque chart on the Tie
Rod Locknuts (28) , the Adaptor bolts (43), the Spring
Bolt Torques
Piston Bolt (25) (SAE Grade 8 Bolt)
Actuator Size
Bolt Size Torque Range
AR205-AR208 3/4"-10 UNC 271-300 FT-LB
AR310-AR416 1-1/4"-7 UNC 537-591 FT-LB
AR418-AR422 1-1/4"-7 UNC 832-916 FT-LB
Tie Rod (27) (A311 Stressproof Rod)
Actuator Size
Bolt Size Torque Range
AR205-AR208 5/8"-11 UNC 117-130 FT-LB
AR310-AR312 3/4"-12 UNC 207-229 FT-LB
AR314-AR416 7/8"-9 UNC 336-371 FT-LB
AR418-AR422 1"-7 UNC 503-556 FT-LB
Adaptor Bolt (43) (SAE Grade 5 Bolt)
Actuator Size
Bolt Size Torque Range
AR205-AR208 5/8"-11 UNC 123-136 FT-LB
AR310-AR422 3/4"-10 UNC 217-240 FT-LB
Spring Cartridge Stud (ASTM A193 Grade B7)
Actuator Size
Bolt Size Torque Range*
AR205-AR208 1/2"-13 UNC 64-71 FT-LB
AR310-AR316 3/4"-10 UNC 226-249 FT-LB
AR414-AR422 1"-7 UNC 546-603 FT-LB
Cartridge Nuts (41) , and the Piston Bolt (25). These
threads should be lubricated with Locktite Threadlocker
242 or equivalent prior to assembly.
4. See attached drawing which depicts all required spare
parts.
5. Test the actuator for smooth operation and air leakage
at service pressure before re-installing.
Seal Kits
Temperature Ratings
*Note: It may be necessary to use a crowfoot
extension to reach the nuts on the spring cart-
ridge stud. In this case, the torque wrench
reading will differ from the actual torque
applied to the nut. Consult factory for proper
torque adjustment.