Emerson FISHER T208 Series User manual

D103752X014
Installation Guide
English – November 2013 T208 Series
www.fisherregulators.com
Introduction
This installation guide provides instructions for
installation, startup, and adjustment. To receive
a copy of the instruction manual, contact your
local Sales Ofce or view a copy at
www.fisherregulators.com. For further
information refer to: T208 Series Tank Blanketing
Vapor Recovery Regulators Instruction
Manual, D103752X012.
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.
PRODUCT SIZE CATEGORY FLUID TYPE
DN 20 and 25 / 3/4 and 1 inch SEP 1
Specications
Available Congurations
Type T208: Tank blanketing vapor recovery
regulator with control pressure range of 5 mbar
to 0.48 bar / 2 inches w.c. to 7 psig in six
different spring ranges and has internal pressure
registration requiring no control line.
Type T208M: Similar to Type T208 but has a
blocked throat and a control line connection for
external pressure registration.
Body Sizes and End Connection Styles
See Table 1
Maximum Allowable Inlet (Casing) Pressure(1)
See Table 1
Maximum Outlet Pressure(1)
2.4 bar / 35 psig
Maximum Emergency Inlet Pressure to Avoid
Internal Parts Damage(1)
With Nitrile (NBR) or Fluorocarbon (FKM)
diaphragm: 2.4 bar / 35 psig
With Fluorinated Ethylene Propylene (FEP)
diaphragm: 1.4 bar / 20 psig
Control Pressure Ranges(1)
See Table 2
Shutoff Classication per ANSI/FCI 70-3-2004
Class VI (Soft Seat)
Pressure Registration
Type T208: Internal
Type T208M: External
1. The pressure/temperature limits in this Installation Guide and any applicable standard or code limitation should not be exceeded.
2. See Table 3 for operating temperature ranges for available trim combinations.
Material Temperature Capabilities(1)(2)
Nitrile (NBR): -29 to 82°C / -20 to 180°F
Fluorinated Ethylene Propylene (FEP):
-29 to 82°C / -20 to 180°F
Fluorocarbon (FKM): 4 to 149°C / 40 to 300°F
Ethylene Propylene Diene (EPDM):
-29 to 107°C / -20 to 225°F
Peruoroelastomer (FFKM):
-18 to 149°C / 0 to 300°F
Installation
!
WARNING
Only qualied personnel shall 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.
(Regulator Technologies) 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.

2
T208 Series
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(1), unless otherwise specied,
but be sure ow 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 traf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
Recommended pressure limitations are stamped
on the regulator nameplate. Vapor recovery
regulators are used to maintain a constant inlet
(blanket) pressure with the outlet owing to a system
whose pressure is lower than that at the inlet.
The recovery regulators are not intended to be used
as an ASME certied relief device for overpressure
protection on a tank. They are to be used as part
of a gas blanketing system to control outow of
blanketing gas under normal conditions and collect
tank vapors for the vapor disposal reclamation
system. Provide alternate methods of emergency
overpressure protection.
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 control pressure, perform the
following procedure.
For internal at circular adjusting screw:
1. Remove the closing cap (key 22).
2. Use a 25 mm / 1-inch hex rod or at screwdriver
to turn the adjusting screw (key 35) either
clockwise to increase control pressure or
counterclockwise to decrease control pressure.
The regulator will go into immediate operation.
To ensure correct operation, always use a
pressure gauge to monitor the vapor recovery
pressure when making adjustments.
3. After making the adjustment, replace the closing
cap gasket (key 25) and install the closing cap
(key 22).
For external square head adjusting screw:
1. Loosen the locknut (key 20).
2. Turn the adjusting screw (key 35) either
clockwise to increase control pressure or
counterclockwise to decrease control pressure.
Always use pressure gauge to monitor the vapor
recovery pressure when making adjustments.
3. After making the adjustment, tighten the locknut
(key 20).
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 Body
2 Cap Screw (2 required)
3 Spring Case
4 Lower Casing
5* Orice
6 Spring
7 Diaphragm Head
(2 required)
8 Pusher Post
9 Diaphragm Gasket
10* Diaphragm
11* Body Seal O-ring
12* Insert Seal O-ring
13* Disk Assembly
14 Stem
16 Lever Assembly
17 Machine Screw
(2 required)
18 Guide Insert
19 Upper spring seat(2)
20 Lock Nut(2)
22 Closing Cap
23 Hex Nut (8 required)
24 Cap Screw (8 required)
25* Closing Cap Gasket
Key Description
26 Vent Assembly
27 Pipe Plug
(Type T208 only)
30* Stem Seal O-ring
(Type T208M only)
31* Throat Seal O-ring
(Type T208M only)
34 Machine Screw
(Type T208M only)
35 Adjusting Screw
36 Washer
38 Cap Screw
41 Back Disk Spring
42* Back Body Seal O-ring
43 Back Body Cap
44 Disk Spacer
45* Diaphragm Head Gasket
46 Nameplate
47 Drive screw (2 required)
48 Flow arrow
49 Backup Ring
50 Lower Spring Seat
51 NACE Tag (not shown)
52 Tag Wire (not shown)
*Recommended Spare Part
1. For proper operation to achieve the published capacities at low setpoint, the spring case barrel should be installed pointed down as shown in Figure 1.
2. Use for optional external square head adjusting screw assembly recommended for 62 to 172 mbar / 0.9 to 2.5 psig, 90 to 310 mbar / 1.3 to 4.5 psig, and 0.26 to 0.48 bar /
3.8 to 7 psig spring ranges only.

3
T208 Series
Figure 1. T208 Series Assembly
APPLY LUBRICANT(1):
L1 = SILICONE GREASE
L2 = ANTI-SEIZE COMPOUND
1. Lubricants must be selected such that they meet the temperature requirements.
2. For 62 to 172 mbar / 0.9 to 2.5 psig, 90 to 310 mbar / 1.3 to 4.5 psig, and 0.26 to 0.48 bar / 3.8 to 7 psig spring ranges only.
ERSA02737
ERSA02738
ERSA02737
10
7
45
8
16
12
1149
42 17
44
L1
L2
L2
L1 L1
9
7
50
36
6
35
14 18
13
41 538
10
7458
1612
30
11
49
42 17
44
9
7
50
36
6
35
14
18
313441 5 38
L1
L1
L1 L1
L1
L2 L2
20
19
35
22
6L2
TYPE T208 ASSEMBLY WITH INTERNAL PRESSURE REGISTRATION
TYPE T208M ASSEMBLY WITH EXTERNAL PRESSURE REGISTRATION
EXTERNAL SQUARE HEAD ADJUSTING
SCREW ASSEMBLY OPTION(2)
22
3
26
24
23
27
4
25
46
47
48
43
1
2

T208 Series
©Emerson Process Management Regulator Technologies, Inc., 2013; All Rights Reserved
The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC,
a business of Emerson Process Management.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties
or guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifi cations
of such products at any time without notice.
Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use
and maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.
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Tel: [phone]
Outside U.S. [phone]
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For further information visit www.fisherregulators.com
The distinctive diamond shape cast into every spring
case uniquely identifies the regulator as part of the
Fisher® brand and assures you of the highest-quality
engineering, durability, performance, and support.
Table 2. Control Pressure Ranges and Spring Information
CONTROL PRESSURE RANGE SPRING PART NUMBER SPRING COLOR SPRING WIRE DIAMETER SPRING FREE LENGTH
mbar Inches w.c. mm Inch mm Inch
5 to 17(1)(2) 2 to 7(1)(2) 1B653827052 Red 2.2 0.085 92.2 3.63
7 to 32(1)(2) 3 to 13(1)(2) 1B653927022 Unpainted 2.7 0.105 95.3 3.75
25 to 65 10 to 26 1B537027052 Yellow 2.9 0.114 109 4.31
62 to 172 0.9 to 2.5 psig 1B537127022 Green 4.0 0.156 103 4.06
90 to 310 1.3 to 4.5 psig 1B537227022 Light blue 4.8 0.187 100 3.94
0.26 to 0.48 bar 3.8 to 7 psig 1B537327052 Black 5.5 0.218 101 3.98
1. To achieve the published control pressure range, the spring case must be installed pointing down.
2. Do not use Fluorocarbon (FKM) diaphragm with this spring at diaphragm temperatures lower than 16°C / 60°F.
TRIM OPTION CODE DIAPHRAGM MATERIAL DISK AND O-RING MATERIAL OPERATING TEMPERATURE RANGES
Standard Nitrile (NBR) Nitrile (NBR) -29 to 82°C / -20 to 180°F
VV Fluorocarbon (FKM) Fluorocarbon (FKM) 4 to 149°C / 40 to 300°F
TN Fluorinated Ethylene Propylene (FEP) Nitrile (NBR) -29 to 82°C / -20 to 180°F
TV Fluorinated Ethylene Propylene (FEP) Fluorocarbon (FKM) 4 to 82°C / 40 to 180°F
TK Fluorinated Ethylene Propylene (FEP) Perfluoroelastomer (FFKM) -18 to 82°C / 0 to 180°F
TE Fluorinated Ethylene Propylene (FEP) Ethylene Propylene Diene (EPDM) -29 to 82°C / -20 to 180°F
Table 3. Operating Temperature Ranges for Available Trim Combination
Table 1. Body Sizes, End Connection Styles, and Maximum Allowable Inlet (Casing) Pressures
BODY SIZE BODY MATERIAL END CONNECTION
STYLES(1)
MAXIMUM ALLOWABLE INLET (CASING) PRESSURE
DN Inch bar psig
20 or 25 3/4 or 1
Gray cast iron NPT 2.4 35
WCC Carbon steel NPT, CL150 RF, CL300 RF,
or PN 16/25/40 RF 5.2 75
CF8M/CF3M Stainless steel(2)
1. All flanges are welded. Weld-on flange dimension is 356 mm / 14 inches face-to-face.
2. Pipe nipples and  anges are 316 Stainless steel for  anged body assemblies.