Emerson FISHER T208 Series Installation Manual

Installation Guide
D103752X014
English – November 2022

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: T208 Series Tank
Blanketing Vapor Recovery Regulators Instruction
Manual, D103752X012.

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
DN 20 and 25 / NPS 3/4 and 1

Specifications

Available Configurations

Type T208: Tank blanketing vapor recovery
regulator with control pressure range of 5 mbar to
0.48 bar / 2 in. 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

See Table 1

Maximum Outlet Pressure

2.4 bar / 35 psig
Maximum Emergency Inlet Pressure to Avoid
Internal Parts Damage
With Nitrile (NBR), Ethylene
Propylene Diene (EPDM) or
Fluorocarbon (FKM) diaphragm:
2.4 bar / 35 psig
With Fluorinated Ethylene Propylene (FEP)
diaphragm: 0.69 bar / 10 psig

Control Pressure Ranges

See Table 2

Shutoff Classification per ANSI/FCI 70-3-2004

Class VI (Soft Seat)
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.
CATEGORY FLUID TYPE
SEP
(1)
(1)
(1)
(1)
Pressure Registration
Type T208: Internal
Type T208M: External
Material Temperature Capabilities
Elastomer Parts
Nitrile (NBR): -40 to 82°C / -40 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
EPDM: -29 to 107°C / -20 to 225°F
Perfluoroelastomer (FFKM):-18 to 149°C /
0 to 300°F
Body Materials
Gray Cast Iron: -29 to 149°C / -20 to 300°F
WCC Carbon Steel: -29 to 149°C / -20 to 300°F
.
LCC Carbon Steel: -40 to 149°C / -40 to 300°F
CF8M/CF3M Stainless Steel: -40 to 149°C /
-40 to 300°F

Installation

1
Only qualified 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. 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.
T208 Series
(1)(2)
▲
WARNING