Emerson Fisher Y692 - User Manual

Type Y692 Low-Pressure Gas Blanketing Regulator
Figure 1. Type Y692 Low-Pressure Gas Blanketing Regulators
!
WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,

causing property damage and personal
injury or death.
Fisher™ regulators must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies
Inc. (Emerson) instructions.
If the regulator vents gas or a leak
develops in the system, service to the unit
may be required. Failure to correct trouble
could result in a hazardous condition.
Installation, operation and maintenance

personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment

personnel when installing, operating and
maintaining the Type Y692 Low-Pressure
Gas Blanketing Regulator.
Introduction
Scope of the Manual
This instruction manual provides installation, startup,
maintenance and parts ordering information for the
Type Y692 Low-Pressure Gas Blanketing Regulator.
Product Description
The Accu-Pressure™ Type Y692 Gas Blanketing
Regulator (Figure 1) is a pressure reducing direct-
operated regulator with internal registration or external
pressure registration. It is used for accurate pressure
control on very low-pressure blanketing systems.
Blanketing with low-pressure gas helps prevent
corrosion, helps control emissions from the blanketed
product and helps protect against any contamination to
the blanketed product by atmospheric conditions.
The regulator will maintain a positive vessel
pressure reducing the possibility of vessel
wall collapse. The Type Y692 is available in
NPS 1-1/2 and 2 / DN 40 and 50 body sizes.
Type Y692 with external pressure registration
regulators have a stem seal with O-rings and a
1/2 NPT control line connection in the diaphragm
case. The control line can be used to more accurately
control the pressure in the tank if the regulator is
mounted an extended distance from the control point.
The stem seal separates the body outlet pressure from
the diaphragm case.
Instruction Manual
D102031X012
November 2016
Type Y692

Summary

Type Y692 Low-Pressure Gas Blanketing Regulator

Installation and Operation Safety Warning

Critical safety warning regarding installation, operation, and maintenance.

Principle of Operation

Installation

Installation Safety Precautions

Critical warnings about overpressure, leaks, and hazardous gas service.

Installation Procedure Steps

Key steps for qualified personnel, including inspection, placement, and orientation.

Startup and Adjustment

Operation and Adjustment Steps

Procedures for placing the regulator into operation and adjusting the pressure setting.

Maintenance Guidelines

Maintenance

Body Area Maintenance Procedures

Detailed steps for accessing and servicing the regulator's body, orifice, and disk assembly.

Diaphragm and Spring Case Procedures

Procedures for accessing and servicing the diaphragm, spring, and lever assembly.

Control Spring Replacement

Diaphragm Parts Disassembly

Emerson Fisher Y692 Specifications

General

Brand	Emerson
Model	Fisher Y692
Category	Controller
Language	English