Data Sheet

685SE and 685SR Actuators
D103791X012
Product Bulletin
61.2:685SE/685SR
September 2014
2
Table 1. S pecifications
Operating Pressure
(1)
Minimum: 2.7 bar (40psig)
Maximum Allowable: 10.3 bar (150 psig)
Consult your Emerson Process Management sales
office for supply pressures under 40 psig
Travel
(2)
25 mm (1 inch) through 610 mm (24 inch)
See table 2
Thrust Capabilities
Designed to meet the application requirements
Piston Diameter and Area
(2)
Available in 51 mm (2 inch) increments between 254
mm (10 inch) and 711 mm (28 inch)
See table 2
For additional sizes, contact your Emerson Process
Management sales office.
Operative Temperature Limits
Standard: 40 to 93_C(40 to 200_F)
Low Temperature: 54 to 93_ C(65 to 200_F)
(3)
High Temperature: 32 to 204_C(25 to 400_F)
(3)
Yoke Boss and Valve Stem Diameter
J 90.5 mm (3-9/16 inch) yoke boss with 19.1 mm
(3/4 inch) stem
J 127 mm (5 inch) yoke boss with
25.4 mm (1 inch) stem
J 127 mm (5 inch) yoke boss
with 31.8 mm (1-1/4 inch) stem
J 127 mm (5H inch)
yoke boss with 32 mm (1-1/4 inch) stem
J 178 mm
(7 inch) yoke boss with 51 mm (2 inch) stem
Pressure Connections
See table 3
Instrument Mounting
Mounting kits are available for use with the FIELDVUE
DVC6200 series digital valve controller
Construction Materials
PART MATERIAL
Yoke ASTM A36 (steel)
Piston ASTM A36 (steel)
Cylinder 254to559mm(10to22inch)
cylinder: 1026 DOM (steel) with
chrome-plated bore
610to711mm(24to28inch)
cylinder: ASTM A516 Grade 70
(steel) with fluoropolymer
coated bore
Upper/Lower Heads ASTM A36 (steel)
Outer Spring Cartridge ASTM A36 (steel)
Tie Bolt ASTM A311 1045, Class B (steel)
Piston Rod S31603 (316L SST)
Stem Connector ASTM A36 (steel)
Manual Override (optional)
Size 10 to 26: Handwheel
Size 28: Hydraulic Hand-pump
(4)
Weights
See tables 9 and 10
Lifting Point Load Ratings
See table 11
Options
J Manual Override, J Volume Boosters,
J Fisher Optimized Digital Valve (ODV) Package
Dimensions
Seefigures2and3andtables4and5
Certifications
J Pressure Equipment Directive (PED) 97/23/EC,
J ATEX Group II Category 2 Gas and Dust
,
J Systematic Safety Integrity, SIL 3, J GOST-R
(Russia),
J GOST-K (Kazakhstan)
1. The pressure/temperature limits in this bulletin and any other applicable standard or code should not be exceeded.
2. Consult your Emerson Process Management sales office forlarger travelsor cylinder diameters. The Fisher 657, 667, and 585C family of actuatorscan be used for smaller travels or cylinder diamet
ers.
3. Consult your Emerson Process Management sales office for applications requiring low or high temperature requirements.
4. Consult your Emerson Process Management sales office for applications requiring a manual override on a size 28 actuator.