Fisher 67D Series User Manual

67D Series Pressure Reducing Regulators
TYPE 67DF OR 67DFR FILTERED REGULATORTYPE 67D OR 67DR REGULATOR
Figure 1. 67D Series Pressure Reducing Regulators
Installation, operation and maintenance
procedures performed by unqualified
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Use qualified
personnel when installing, operating
and maintaining the 67D Series Pressure
Reducing Regulators.
Introduction
Scope of the Manual
This manual provides instructions for the installation,
maintenance and parts ordering information for
67D Series regulators. Instructions and parts lists for
other equipment mentioned in this instruction manual,
as well as for other 67 Series regulators, are found in
separate manuals.
!
WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
fire and/or chemical contamination
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. 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.
Instruction Manual
D103151X012
April 2017
67D Series

Fisher 67D Series Specifications

General

Body Material	Aluminum
Diaphragm Material	Nitrile
Connections	1/4 inch NPT
Input Signal	Pressure
Output Signal	Pressure
Supply Pressure	20 psig (1.4 bar) minimum
Mounting	Panel
Materials	Aluminum body, nitrile diaphragm

Summary

67D Series Pressure Reducing Regulators

Critical Safety Warnings

Essential safety instructions to prevent hazards during installation and operation of the regulators.

Introduction and Scope

Provides an overview of the 67D Series regulators and the content covered in this manual.

Regulator Specifications

Available Configurations and Ratings

Details regulator types, body sizes, pressure/temperature limits, and flow coefficients.

Filter, Material, and Temperature Specs

Covers filter capabilities, NACE compliance, elastomer options, and operating temperature ranges.

Product Descriptions and Operation

67D Series Regulator Types

Describes standard, filtered, and internal relief valve equipped regulators.

Principle of Operation

Explains how the regulator controls downstream pressure by adjusting flow through the orifice.

Internal Relief and Smart Bleed Features

Details the function of internal relief valves and the Smart Bleed option for pressure management.

Installation Guidelines and Safety

General Installation Instructions

Provides step-by-step guidance for installing the regulators, including vent orientation and connection practices.

Overpressure Protection Requirements

Emphasizes the need for external overpressure protection due to limitations of internal relief valves.

Operational Procedures and Maintenance

Startup and Adjustment

Instructions for safely starting up and adjusting the regulator's outlet pressure setting.

Shutdown and Routine Maintenance

Guidance on safely shutting down, performing routine maintenance, and draining dripwells.

Detailed Maintenance Procedures

Trim Maintenance Procedures

Detailed steps for disassembling and reassembling regulator trim components for various models.

Diaphragm Maintenance

Procedures for inspecting, replacing, and reinstalling the diaphragm assembly.

Filter Maintenance and Parts Ordering

Filter Element and Trim Maintenance

Steps for maintaining the filter element and associated trim parts on filtered regulator models.

Parts Ordering Information

Guidance on how to order replacement parts, including part numbers and available kits.

Parts List

Component Part Numbers

Lists available parts kits, individual components, and their corresponding part numbers for the 67D Series.