Emerson Fisher 67C User Manual

D102601X012
67C Series
Instruction Manual
Form 5469
March 2004
www.FISHERregulators.com
67C Series Instrument Supply Regulators
Introduction
Scope of Manual
This manual provides instructions and parts lists for
67C Series instrument supply 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.
Product Descriptions
The 67C Series direct-operated regulators are typically
used to provide constantly controlled, reduced pressures
to pneumatic and electropneumatic controllers and other
instruments. They are suitable for most air or gas applica-
tions. Other applications include providing reduced
pressures to air chucks, air jets, and spray guns.
Figure 1. Typical 67C Series Regulators
W7412
TYPE 67CF FILTER REGULATOR
WITH OPTIONAL GAUGE
TYPE 67C OR 67CR
REGULATOR
W8438
• The Type 67C and 67CS is the standard instrument
supply regulator without a filter or internal relief.
• The Type 67CF and 67CFS are equipped with a
filter for removing particles from the supply gas.
• The Type 67CR and 67CSR has an internal relief
valve with a soft seat for reliable shutoff with no
discernible leakage.
• The Type 67CFR and 67CFSR have a filter and
internal relief valve with a soft seat for reliable shutoff
with no discernible leakage.
Specifications
Some general 67C Series ratings and other
specifications are given on page 2. A label on the
spring case gives the control spring range for a given
regulator as it comes from the factory.

Emerson Fisher 67C Specifications

General

End Connection Style	NPT
Materials	Stainless steel
Temperature Capabilities	-20 to 180°F / -29 to 82°C
Application	Natural gas, air, and other industrial gases
Output Signal	Pressure
Supply Pressure	Up to 150 psig / 10, 3 bar
Ambient Temperature Range	-20 to 180°F / -29 to 82°C

Summary

Introduction

Scope of Manual

Details the manual's purpose, covering instructions and parts lists for 67C Series regulators.

Product Descriptions

Describes the 67C Series direct-operated regulators and their typical applications.

Specifications

Principle of Operation

Internal Relief

Explains the internal relief function for specific 67C Series models, handling overpressure.

Smart Bleed Airset

Details the Smart Bleed option for exhausting downstream pressure upon inlet pressure loss.

Overpressure Protection

Highlights the need for external protection if inlet pressure exceeds regulator ratings.

Installation

Startup and Adjustment

Shutdown

Maintenance

Trim Maintenance for 67C, 67CR, 67CS, and 67CSR

Procedure for trim maintenance on specific 67C Series regulator types.

Diaphragm Maintenance

Steps for inspecting and replacing the diaphragm assembly in 67C Series regulators.

Filter Element and Trim Maintenance for 67CF, 67CFR, 67CFS, and 67CFSR

Maintenance steps for filter elements and trim on specific 67C Series models.

Parts Ordering

Parts List