Emerson 627F Installation Guide
Installation Guide
English – May 2002
Type 627F
Introduction
This installation guide provides instructions for installation,
startup, and adjustment. To receive a copy of the instruction
manual, contact your local Fisher Sales
Office or Sales Representative or view a copy at
www.FISHERregulators.com. For further information refer to:
Type 627F Instruction Manual, form 5282, D101545X012.
P.E.D. Categories
This product may be used as a safety accessory with
pressure equipment in the following Pressure Equipment
Directive 97/23/EC categories. It may also be used outside of the Pressure Equipment Directive using sound
engineering practice (SEP) per table below.
EZISTCUDORPSEIROGETACEPYTDIULF
)hcni-1,4/3(,52,02NDPES
)hcni-2(05NDII
1
Specifications
Body Sizes
End Connection Styles
Maximum Inlet and Differential Pressures
Minimum Differential Pressures
Maximum Emergency Outlet Pressure
Outlet Pressure Ranges
Proof Test Pressure
Temperature Capabilities
1. The pressure/temperature limits in this installation guide and any applicable
standard or code limitation should not be exceeded.
(1)
DN 20, 25, or 50 (3/4, 1, or 2-inch)
(1)
DN 20 (3/4-inch): NPT
DN 25 or 50 (1 or 2-inch): NPT; ANSI Class 300RF
or 600RF flanged
(1)
See table 1
(1)
Low Differential Actuator Spring
0,34 to 2,4 bar (5 to 35 psig):
2,4 to 6,9 bar (35 to 100 psig):
0,69 bar (10 psi)
1,4 bar (20 psi)
High Differential Actuator Spring
0,34 to 2,4 bar (5 to 35 psig):
2,4 to 6,9 bar (35 to 100 psig):
1,4 bar (20 psi)
1,4 bar (20 psi)
(1)
17,2 bar (250 psig)
0,34 to 2,4 bar (5 to 35 psig)
2,4 to 6,9 bar (35 to 100 psig)
All Pressure Retaining Components have been
proof tested per Directive 97/23/EC - Annex 1,
Section 7.4
-29 to 82°C (-20 to 180°F)
Installation
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 Fisher 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 pressurerelieving 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 male 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.
Table 1. Maximum Inlet and Differential Pressures
,EZISECIFIRO
)SEHCNI(mm
)8/1x8/3(2,3x5,9
)4/1x8/3(4,6x5,9
)8/3(5,9
)2/1(7,21
telnImumixaMlaitnereffiDmumixaMtelnImumixaMlaitnereffiDmumixaM
9,6
)001(
9,6
)001(
9,6
)001(
1,4
)06(
www.FISHERregulators.com
)GISP(rab,)REVLIS(GNIRPSNIAMLAITNEREFFIDWOL )GISP(rab,)DER(GNIRPSNIAMLAITNEREFFIDHGIH
9,6
)001(
9,6
)001(
9,6
)001(
1,4
)06(
2,71
)052(
2,71
)052(
2,71
)052(
6,8
)521(
2,71
)052(
2,71
)052(
2,71
)052(
6,8
)521(
D101545XENG
Type 627F
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.
Taking Out of Service (Shutdown)
To avoid personal injury resulting from sudden
release of pressure, isolate the regulator from all
pressure before attempting disassembly.
Type 627F Parts List
Key Description
1 Body
2 Orifice
3 Cap Screw
4 Diaphragm Case O-Ring
5 Diaphragm Case
6 Boost Body
7 O-Ring
8 Stem Guide
9 Disk Assembly
10 Stem
11 Stem O-Ring
12 Stem Backup Ring
13 Hair Pin Clip
14 Drive Pin
15 Lever
16 Lever Retainer
17 Lever Pin
18 Lever Cap Screw
19 Pusher Post
23 Diaphragm
24 Diaphragm Head
29 Spring Case
31 Lower Spring Seat
32 Tension Spring
34 Locknut
36 Closing Cap
37 Spring Case Cap Screw
39 Nameplate
53 Spring Retainer
54 Diaphragm Connection
55 Gasket
56 Reducing Nipple
58 Pipe Plug
59 Elbow
60 Pilot Supply Tubing
61 Spring Seat Bolt
62 Washer
63 Closing Cap Gasket
32B3310-D
Figure 1. Type 627F Assembly
2
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