English – May 2002
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:
133 Series Instruction Manual, form 5007, D100270X012.
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 out-
side of the Pressure Equipment Directive using sound
engineering practice (SEP) per table below.
Type 133H: High pressure construction for outlet
pressure range of 1-1/2 to 10 psig (0,10 to 0,69 bar).
The Type 133H can also use the 5 mbar to 0,14 bar
(2-inches w.c. to 2 psig) springs of the Type 133L.
The maximum operating inlet pressure is 4,1 bar
(60 psig) with a maximum emergency inlet
pressure of 8,6 bar (125 psig).
Type 133HP: Extra high pressure construction for
outlet pressure range of 0,14 to 4,1 bar (20 to 60
psig). The maximum operating inlet pressure rating
of 10 bar (150 psig) with a maximum emergency
inlet pressure of 10 bar (150 psig).
Type 133L: Low pressure construction for outlet
pressure range of 5 mbar to 0,14 bar (2-inches w.c.
to 2 psig). The maximum operating inlet pressure is
4,1 bar (60 psig) with a maximum emergency let
pressure of 8,6 bar (125 psig).
Type 133Z: Zero gravity governor construction for
outlet pressure range of -2,5 to 10 mbar (-1 to 4-
inches w.c.). The maximum operating inlet pressure
is 1,4 bar (20 psig) with a maximum emergency
inlet pressure of 8,6 bar (125 psig).
DN 50 (2-inch) - cast iron NPT female, cast iron ANSI
Class 125 flat-face flanged, steel NPT female, or
steel ANSI Class 150 raised-face flanged
Outlet Pressure Ranges
See table 1
Maximum Inlet and Outlet Pressures
See table 2
Proof Test Pressure
All Pressure Retaining Components have been
proof tested per Directive 97/23/EC - Annex 1,
-29 to 66°C (-20 to 150°F)
Control Line Connection
133H, 133L, and 133Z: DN 20 (3/4-inch) NPT female;
connection will be positioned directly over body outlet
(standard position) or 90 degrees right or left of
standard position if specified
133HP: DN 8 (1/4 NPT) female connection positioned
directly over body outlet
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 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.
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
1. The pressure/temperature limits in this installation guide and any applicable
standard or code limitation should not be exceeded.