Fisher 667 User Manual

D100310X012
Type 667 Diaphragm Actuator Sizes 30-76 and 87
Contents
Introduction 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Pressure Limitations 3. . . . . . . . . . . . . . . .
Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting the Actuator on the Valve 4. . . . . . . . . . . .
Discussion of Bench Set 5. . . . . . . . . . . . . . . . . . . . . .
Bench Set Spring Adjustment 6. . . . . . . . . . . . . . . . .
For Direct Acting Valves (PDTC) 6. . . . . . . . . . . . . .
For Reverse Acting Valves (PDTO) 6. . . . . . . . . . .
Installing the Stem Connector Assembly 7. . . . . . . .
Deadband Measurement 8. . . . . . . . . . . . . . . . . . . . . .
Loading Connection 8. . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Disassembly 9. . . . . . . . . . . . . . . . . . . . . . .
Actuator Assembly 9. . . . . . . . . . . . . . . . . . . . . . . . . .
Top-Mounted Handwheel Assembly (Adjustable
Down Travel Stop) 10. . . . . . . . . . . . . . . . . . . . . .
Disassembly for Top-Mounted Handwheel 10. . .
Assembly for Top-Mounted Handwheel 11. . . . . .
Side-Mounted Handwheel Assembly for
Size 34 through 60 Actuators 13. . . . . . . . . . . . .
Disassembly for Side-Mounted
Handwheel (34-60) 13. . . . . . . . . . . . . . . . . . . . . .
Assembly for Side-Mounted
Handwheel (34-60) 13. . . . . . . . . . . . . . . . . . . . . . .
Side-Mounted Handwheel Assembly for
Size 70, 76, and 87 Actuators 14. . . . . . . . . . .
Disassembly for Side-Mounted
Handwheel (70, 76, & 87) 14. . . . . . . . . . . . . . . .
Assembly for Side-Mounted Handwheel
Handwheel (70, 76, & 87) 14. . . . . . . . . . . . . . . .
Casing-Mounted Travel Stops 16. . . . . . . . . . . . . . . .
Figure 1. Type 667 or 667-4 Actuator Mounted
on easy-e
R
Valve
W1916-1*/IL
Parts Kits 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side-Mounted Handwheels Retrofit Kits 17. . . . . . . .
Top-Mounted Handwheel Retrofit Kits 17. . . . . . . . .
Actuator Repair Kits 17. . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Assembly 17. . . . . . . . . . . . . . . . . . . . . . . . . .
Top-Mounted Handwheel 25. . . . . . . . . . . . . . . . . . . .
Side-Mounted Handwheel (30-60) 28. . . . . . . . . . . .
Side-Mounted Handwheel (70, 76, & 87) 31. . . . . .
Casing Mounted Travel Stops 31. . . . . . . . . . . . . . . .
Instruction Manual
Form 1203
February 2000
Type 667 Size 30-76 & 87

Fisher 667 Specifications

General

Action	Direct or Reverse
Input Signal	3-15 psi (0.2-1.0 bar)
Ambient Temperature Range	-20 to 180°F (-29 to 82°C)
Materials	Aluminum, Stainless Steel
Supply Pressure	1.4 to 1.6 bar (20 to 23 psig)

Summary

Introduction to Type 667 Actuators

Scope of Manual

Outlines the manual's coverage of Type 667 actuators and related components.

Actuator Description

Explains the Type 667 and 667-4 actuators and their function in valve operation.

Actuator Specifications

Details technical specifications for actuator sizes, including area, thrust, and travel.

Maximum Pressure Limitations

Defines safe operating pressure limits for actuator diaphragm and casing to prevent damage.

Installation Procedures

Actuator Mounting on Valve

Instructions for physically attaching the actuator onto the control valve.

Bench Set Spring Adjustment

Procedure for adjusting the actuator spring to set desired valve travel and operation.

Stem Connector Assembly Installation

Details on connecting the actuator stem to the valve stem using the stem connector.

Deadband Measurement

Method for determining actuator deadband to assess control loop performance.

Loading Connection

Guidance on connecting pneumatic control signal lines to the actuator.

Actuator Maintenance and Repair

Actuator Disassembly and Assembly

Procedures for taking apart and reassembling the main actuator components.

Top-Mounted Handwheel Assembly Maintenance

Covers maintenance for the top-mounted handwheel, typically used as a travel stop.

Side-Mounted Handwheel Assembly Maintenance

Details maintenance for side-mounted handwheels used for manual operation or travel stops.

Casing-Mounted Travel Stops Maintenance

Instructions for maintaining casing-mounted travel stops that limit actuator stem travel.

Parts Ordering and Identification

Actuator Repair Kits

Lists available kits for repairing actuator components like O-rings and gaskets.

Side-Mounted Handwheels Retrofit Kits

Details retrofit kits for adding side-mounted handwheels to actuators.

Top-Mounted Handwheels Retrofit Kits

Details retrofit kits for adding top-mounted handwheels to actuators.

Parts List

Comprehensive list of all actuator components with part numbers and quantities.