Introduction; Scope Of Manual; Description; Educational Services - Emerson Fisherr 4660 Instruction Manual

4660 Pressure Pilot
May 2014

Introduction

Scope of Manual

This instruction manual provides installation, operating, maintenance, and parts ordering information for the Fisher
4660 high‐low pressure pilot. Refer to separate instruction manuals for information regarding the control valve
actuator.
Do not install, operate, or maintain a 4660 pressure pilot without being fully trained and qualified in valve, actuator,
and accessory installation, operation and maintenance. To avoid personal injury or property damage it is important to
carefully read, understand, and follow all of the contents of this manual, including all safety cautions and warnings. If
you have any questions about these instructions, contact your Emerson Process Management sales office.

Description

The 4660 high‐low pressure pilot (figure 1) activates emergency shutdown systems for flowlines, production vessels,
and compressors. The pilot can be used with either a single or dual set point capability to maintain full output pressure
when the process is operating within the set point range. The primary switching mechanism in this pilot is a
block‐and‐bleed relay assembly.
Unless otherwise noted, all NACE references are to NACE MR0175‐2002.

Specifications

Specifications for the 4660 high‐low pressure pilot are listed in table 1.

Educational Services

For information on available courses for the 4660 high‐low pressure pilot, as well as a variety of other products,
contact:
Emerson Process Management
Educational Services, Registration
P.O. Box 190
Marshalltown, IA 50158-2823
Phone: 800-338-8158 or 641-754-3771
FAX: 641-754-3431
e‐mail: education@emerson.com
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Instruction Manual
D200163X012