Emerson Fisher 670 Series User manual

670 Series
Installation Guide
D200109X014
English – February 2015
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: 670 Series Instruction Manual, D200109X012.
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
Description (Regulator Type Number)
See Table 1
Pressure Ratings(1)
See Table 1
Proof Test Pressure
All Pressure Retaining Components have been
proof tested per Directive.
Installation
!
WARNING
Only qualified 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 fluid 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 fluid
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 Specifications
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
fluid. To avoid such injury and damage,
install the regulator in a safe location.
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 flanged
bodies, use suitable line gaskets and approved piping
and bolting practices. Install the regulator in any
position desired, unless otherwise specified, but be
sure flow through the body is in the direction indicated
by the arrow on the body.
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
traffic 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.
1. The pressure/temperature limits in this installation guide and any applicable standard or code limitation should not be exceeded.

670 Series
2
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.
Regulator 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 shutoff valves.
Adjustment
To change the outlet pressure, remove the closing
cap or loosen the locknut and turn the adjusting
screw clockwise to increase outlet pressure or
counterclockwise to decrease pressure. Monitor
the outlet pressure with a test gauge during the
adjustment. Replace the closing cap or tighten the
locknut to maintain the desired setting.
TYPE
NUMBER
OF
GAUGE
DESCRIPTION
REGULATOR
TYPE
NUMBER
MAXIMUM
INLET PRESSURE
MAXIMUM
OUTLET PRESSURE
MAXIMUM
EMERGENCY
OUTLET PRESSURE
bar psig bar psig bar psig
670 1 Basic 1-gauge panel 67CR
17.2 250 6.9 100 7.6 110670F 1 1-gauge panel; regulator has filter 67CFR
670FG 2 2-gauge panel; regulator has filter 67CFR
670FGV 2 2-gauge panel with 3-way
changeover valve; regulator has filter 67CFR 3.5 50 3.5 50 3.8 55
670G 2 Basic 2-gauge panel 67CR 17.2 250 6.9 100 7.6 110
670GV 2 2-gauge panel with 3-way or 4-way
changeover valve 67CR 3.5 50 3.5 50 3.8 55
671 1 Basic 1-gauge panel 912N 17.2 250 0.35 5 0.69 10
675 2 Basic 2-gauge panel 67CR 17.2 250 6.9 100 7.6 110
Table 1. Type Number Description
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
Key Description
1 Regulator
2 Gauge
3 Panel
4 Clamp Bar
5 Hex Nut
6 Machine Screw
7 Tubing
8 Fitting
9 Fitting
10 Nipple
11 Fitting
12 Tubing
13 Changeover Valve
15 Gauge Service Marking
16 Machine Screw
17 Fitting
18 Valve Dial
19 Machine Screw
20 Tubing
23 Support Post
24 Bleed Orifice and Screen Assembly
25 Serial Plate
26 Hex Nut
27 Fitting
28 Fitting
33 Mounting Post (not shown)

670 Series
3
30A6617-B
Figure 1. Type 671 Regulator Assemblies
DC2668-D
A1728-1
Figure 2. Type 670GV Regulator Assemblies
0
5
10
15
20
25
30
0
5
10
15
20
25
30
INSTRUMENT
LOADING PRESSURE
LBS. PER SQ. IN.
MANUAL
LOADING PRESSURE
LBS. PER SQ. IN.
MANUAL
AUTOMATIC
OFF
IN
OUT
TYPE NO.
SERIAL NO.
I
N
C
R
E
A
S
E
18 13 19
4
15
3
6
2
8
7
12
21
9
24
110 20 521 16 9
17
26
25
11
MANUAL
LOADING PRESSURE
IN. OF W.C.
5
0
10
15
20
25
30
O
SE
I
N
C
R
E
A
S
E
23 4 5 6 7 811 29
15
19
28
10
1
27
24
26
25

670 Series
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Emerson Automation Solutions
For further information on the current
PED revision see Bulletin: D103053X012
or scan the QR code.
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D200109X014 © 2002, 2018 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 10/18.
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