Emerson Fisher 67CS User manual

Introduction
This installation guide provides instructions for installation,
startup and adjustment. To receive a copy of the
instruction manual, contact your local Sales Office or view
a copy at www.fisher.com. For further information refer to:
67C Series Instruction Manual, D102601X012.
PED Categories
This product may be used as a safety accessory with
pressure equipment in the following Pressure Equipment
Directive categories. It may also be used outside of the
Pressure Equipment Directive using Sound Engineering
Practice (SEP) per table below. For information on the
current PED revision see Bulletin: D103053X012.
PRODUCT SIZE CATEGORIES FLUID TYPE
1/4 NPT SEP 1
Specifications
Body Size and End Connection Style
1/4 NPT
Maximum Inlet Pressure (Body Rating)(1)
67CFS Series: 17.2 bar / 250 psig
67CS Series: 27.6 bar / 400 psig
Maximum Emergency Outlet Pressure(1)
3.4 bar / 50 psig over outlet pressure setting
Proof Test Pressure
All Pressure Retaining Components have been
proof tested per Directive.
Outlet Pressure Ranges(1)
0 to 1.4 bar / 0 to 20 psig
0 to 2.4 bar / 0 to 35 psig
0 to 4.1 bar / 0 to 60 psig
0 to 8.6 bar / 0 to 125 psig
0 to 10.3 bar / 0 to 150 psig
Temperature Capabilities(1)
With Nitrile (NBR)
Standard Bolting: -29 to 82°C / -20 to 180°F
Stainless Steel Bolting: -40 to 82°C / -40 to 180°F
With Fluorocarbon (FKM)
Polyethylene Filter(3) (standard):-18 to 82°C /
0 to 180°F
Stainless steel or Glass Filter (Optional):
-18 to 149°C / 0 to 300°F
With Silicone (VMQ)(2) Diaphragm and Low
Temperature bolting: -51 to 82°C / -60 to 180°F
With Gauges: -40 to 82°C / -40 to 180°F
Installation
▲ WARNING
Only qualied personnel should install
or service a regulator. Regulators should
be installed, operated and maintained
in accordance with international and
applicable codes and regulations and
Emerson Process Management Regulator
Technologies, Inc. instructions.
If the regulator vents uid or a leak
develops in the system, it indicates that
service is required. Failure to take the
regulator out of service immediately may
create a hazardous condition.
Personal injury, equipment damage or
leakage due to escaping uid or bursting
of pressure-containing parts may result
if this regulator is overpressured or
is installed where service conditions
could exceed the limits given in the
Specications section, or where
conditions exceed any ratings of the
adjacent piping or piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required by the appropriate
code, regulation or standard) to prevent
service conditions from exceeding limits.
Additionally, physical damage to the
regulator could result in personal injury
and property damage due to escaping
uid. To avoid such injury and damage,
install the regulator in a safe location.
The internal relief valve in the
67CFSR Series regulators does not
provide full overpressure protection. The
internal relief valve is designed for minor
seat leakage only.
Clean out all pipelines before installation of the
regulator and check to be sure the regulator has not
been damaged or has collected foreign material during
shipping. For NPT bodies, apply pipe compound to the
external pipe threads. For anged bodies, use suitable
line gaskets and approved piping and bolting practices.
Install the regulator in any position desired, unless
otherwise specied, but be sure ow through the body
is in the direction indicated by the arrow on the body.
1. The pressure/temperature limits in this installation guide or any applicable standard
limitation should not be exceeded.
2. Silicone (VMQ) is not compatible with hydrocarbon gas.
3. Do not use in high aromatic hydrocarbon service.
67CS and 67CFS Series
Installation Guide
D103097X014
English – December 2022

Note
It is important that the regulator be
installed so that the vent hole in the
spring case is unobstructed at all times.
For outdoor installations, the regulator
should be located away from vehicular
tra󰀩c and positioned so that water, ice
and other foreign materials cannot enter
the spring case through the vent. Avoid
placing the regulator beneath eaves or
downspouts, and be sure it is above the
probable snow level.
Overpressure Protection
The recommended pressure limitations are stamped
on the regulator nameplate. Some type of overpressure
protection is needed if the actual inlet pressure exceeds the
maximum operating outlet pressure rating. Overpressure
protection should also be provided if the regulator inlet
pressure is greater than the safe working pressure of the
downstream equipment.
Regular operation below the maximum pressure
limitations does not preclude the possibility of damage
from external sources or debris in the line. The
regulator should be inspected for damage after any
overpressure condition.
Startup
The regulator is factory set at approximately
the midpoint of the spring range or the pressure
requested, so an initial adjustment may be required
to give the desired results. With proper installation
completed and relief valves properly adjusted, slowly
open the upstream and downstream shuto󰀨 valves.
Adjustment
To change the set pressure, remove the closing cap or
loosen the locknut and turn the adjusting screw clockwise
to increase set pressure or counterclockwise to decrease
pressure. Monitor the set pressure with a test gauge
during the adjustment. Replace the closing cap or tighten
the locknut to maintain the desired setting.
Taking Out of Service (Shutdown)
▲ WARNING
To avoid personal injury resulting from
sudden release of pressure, isolate
the regulator from all pressure before
attempting disassembly.
Parts List
Types 67CS and 67CSR
Key Description
1 Body
3 Flange Screw
4* O-ring
7 Spring Case Assembly
10* Valve Cartridge(1)
11* Valve Plug(1)
12* Valve Spring(1)
13* Valve Retainer(1)
14* O-ring(1)
15* Soft Seat(1)
16* Diaphragm Assembly
17 Spring
18 Adjusting Screw
19 Lock Nut
20 Upper Spring Seat
22 Pressure Gauge (not shown)
23 Pipe Plug (not shown)
30 NACE Tag (not shown)
31 Panel Mounting Nut
33 Closing Cap
39 Bottom Plate
45 Vent Screen
Types 67CFS and 67CFSR
Key Description
1 Body
2 Drain Valve
3 Flange Screw
4* O-ring
5 Dripwell
6* Filter Element
7 Spring Case Assembly
9 Filter Retainer
10* Valve Cartridge(1)
11* Valve Plug(1)
12* Valve Spring(1)
13* Valve Retainer(1)
14* O-ring(1)
15* Soft Seat(1)
16* Diaphragm Assembly
17 Spring
18 Adjusting Screw
19 Locknut
20 Upper Spring Seat
22 Pressure Gauge (not shown)
23 Pipe Plug (not shown)
26* Filter Gasket
30 NACE Tag (not shown)
31 Panel Mounting Nut
33 Closing Cap
34 Spacer
37 Thrust Washer
45 Vent Screen
*Recommended spare part.
1. Valve Cartridge Assembly includes keys 10, 11, 12, 13, 14 and 15.
67CS and 67CFS Series
2

Figure 1. Spacer Diameter and Assembly
(For Installing in an Existing Installation if the Mounting Bolts are Too Long)
Figure 3. Types 67CFS and 67CFSR AssemblyFigure 2. Types 67CS and 67CSR Assembly
mm /
IN.
SPACER OUTER DIAMETER
4.6 /
0.18
8.1 /
0.32 ID
SPACER WIDTH AND
INNER DIAMETER
SPACER
B2697
13 /
0.50
OD
IN
34
40C1728
GE03521
33
18
16
45
10
26
1
4
L1
6
5
2
9
19
20
17
15
11
14
12
13
37
7
3
L1
L2 L2
33
L2
19
20
17
15
11
14
12
13
18
45
16
10
39
1
3
7
4
L2
L1
L1
APPLY LUBRICANT(1):
L1 = MULTI-PURPOSE POLY TETRAFLUOROETHYLENE (PTFE) LUBRICANT
L2 = ANTI-SEIZE COMPOUND
1. Lubricants must be selected such that they meet the temperature requirements.
67CS and 67CFS Series
3

67CS and 67CFS Series
Emerson Automation Solutions
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Fisher.com
For further information on the current
PED revision see Bulletin: D103053X012
or scan the QR code.
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T [phone]
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D103097X014 © 2004, 2022 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 12/22.
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