Emerson 1305 Series Pressure Reducing Regulators Installation Guide
1305 Series
D100342XENG
Installation Guide
English – May 2002
www.FISHERregulators.com
1. The pressure/temperature limits in this installation guide and any applicable
standard or code limitation should not be exceeded.
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 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 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.
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.
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:
1305 Series Instruction Manual (form 1095, D100342X012).
P.E.D. Category
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.
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Specifications
Available Constructions
Type 1305C: DN25 (1-inch) NPT inlet and DN 8 (1/4-
inch) NPT outlet connections; 2 mm (5/64-inch) orifice
diameter. Three springs provide 0 to 15,51 bar (0 to
225 psig) reduced pressure ranges.
Type 1305D: same as 1305C, with larger spring
case and one heavy spring for reduced pressure
range of 13,79 to 34,47 bar (200 to 500 psig).
Piping Connections
Inlet: DN 25 (1-inch) NPT
Outlet: DN 6 (1/4-inch) NPT
Maximum Emergency Outlet (casing) Pressure(1)
Type 1305C: 17,25 bar (250 psig)
Type 1305D: 37,92 bar (550 psig)
Outlet Pressure Ranges(1)
Type 1305C: 0 to 5,17 bar (0 to 75 psig), 0 to 10,34 bar
(0 to 150 psig), and 0 to 15,51 bar (0 to 225 psig)
Type 1305D: 13,79 to 34,47 bar (200 to 500 psig)
Maximum Allowable Inlet Pressures(1)
275,8 bar (4000 psig)
Proof Test Pressure
All Pressure Retaining Components have been proof
tested per Directive 97/23/EC - Annex 1, Section 7.4
Temperature Capabilities(1)
-29 to 93°C (-20 to 200°F)
Installation
Only qualified personnel should install or service
a regulator. Regulators should be installed,
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