Emerson H800 Installation Guide
Installation Guide
English – May 2002
Type H800
Introduction
This installation guide provides instructions for installation, startup,
and adjustment. To receive a copy of the instruction manual,
contact your local Fisher Sales Ofce or Sales Representative or
view a copy at www.emersonprocess.com/regulators. For further
information refer to: Type H800 Instruction Manual, form 5187,
D100405X012.
P.E.D. Categories
This product may be used as a pressure 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 CATEGORIES FLUID TYPE
DN 6 (1/4-inch) SEP 1
Specications
End Connections
DN 6 (1/4-inch) NPT female
Vent Connection
DN 15 (1/2-inch) NPT female
Maximum Allowable Control Pressure
17,2 bar (250 psig)
Pressure Range
Non-adjustable, start to discharge between
2,7 and 3,0 bar (39 and 44 psig)
Reseat Pressure
2,4 bar (35 psig) or higher
(1)
(1)
Proof Test Pressure
All Pressure Retaining Components have been proof
tested per Directive 97/23/EC - Annex 1, Section 7.4
Material Temperature Capabilities
-20 to 150°F (-29 to 66°C)
(1)
(1)
Personal injury, equipment damage, or leakage
due to escaping uid or bursting of pressurecontaining parts may result if this backpressure
regulator is overpressured or is installed where
service conditions could exceed the limits given
in the Specications 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 backpressure
regulator could result in personal injury and
property damage due to escaping uid. To avoid
such injury and damage, install the backpressure
regulator in a safe location.
Clean out all pipelines before installation of the backpressure
regulator and check to be sure the backpressure regulator
has not been damaged or has collected foreign material
during shipping. For NPT bodies, apply pipe compound to
the male pipe threads. For anged bodies, use suitable line
gaskets and approved piping and bolting practices. Install
the backpressure regulator in any position desired, unless
otherwise specied, but be sure ow through the body is in
the direction indicated by the arrow on the body.
Note
It is important that the backpressure regulator be
installed so that the vent hole in the spring case is
unobstructed at all times. For outdoor installations,
the backpressure regulator should be located
away from vehicular trafc and positioned so that
water, ice, and other foreign materials cannot enter
the spring case through the vent. Avoid placing
the backpressure regulator beneath eaves or
downspouts, and be sure it is above the probable
snow level.
Installation
Only qualied personnel should install
or service a backpressure regulator.
Backpressure regulators should be installed,
operated, and maintained in accordance
with international and applicable codes and
regulations, and Fisher instructions.
If using a backpressure regulator on a hazardous
or ammable uid service, personal injury
and property damage could occur due to re
or explosion of vented uid that may have
accumulated. To prevent such injury or damage,
provide piping or tubing to vent the uid to a
safe, well-ventilated area or containment vessel.
Also, when venting a hazardous uid, the piping
or tubing should be located far enough away
from any buildings or windows so to not create
a further hazard, and the vent opening should be
protected against anything that could clog it.
1. The pressure/temperature limits in this installation guide and any applicable
standard or code limitation should not be exceeded.
Overpressure
Maximum inlet pressures depend upon body materials and
temperatures. Refer to the nameplate for the maximum
inlet pressure of the valve. The valve should be inspected
for damage after any overpressure condition. Fisher
backpressure regulators are NOT ASME safety relief valves.
Startup
The backpressure 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 (if applicable).
Adjustment
To change the outlet pressure, remove 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 closing cap or tighten the locknut to
maintain the desired setting.
D100405XENG
www.emersonprocess.com/regulators
Type H800
Table 1. Maximum Allowable Inlet Pressure to 67 Series Regulators (with Type H800 Backpressure Regulator) to prevent
Instrument Supply Pressure From Exceeding 50 psig (3,4 bar)
TYPE H800
INSTALLATIONS
A
B
1. Limit vent piping to 30 equivalent feet (9 equivalent meters) of 1/2-inch piping. Lower vent piping may reduce the maximum allowable inlet pressure to supply pressure regulator.
Taking Out of Service (Shutdown)
SUPPLY PRESSURE
REGULATOR TYPES
67, 67R, 67F, 67FR, 67AF,
or 67AFR
67, 67R, 67AF, or 67AFR
67FR or 67F
REMOTE VENT PIPING
Yes
No
Yes 100 6,9
No 250 17,2
Yes 100 6,9
No 200 13,8
Parts List
Key Description
To avoid personal injury resulting from sudden release
of pressure, isolate the backpressure regulator from
all pressure before attempting disassembly.
PNEUMATIC INSTRUMENT
TYPE H800
BACKPRESSURE
REGULATOR
TUBING FOR INSTRUMENT
SUPPLY PRESSURE
PNEUMATIC
INSTRUMENT
INLET PRESSURE
TUBING
W3616
ACTUATOR YOKE
TYPE 67AFR REGULATOR
INLET PRESSURE
TUBING
VENT CONNECTION
ACTUATOR YOKE
ACTUATOR YOKE
TYPE 67AFR REGULATOR
TYPE H800 BACKPRESSURE
REGULATOR
VENT
CONNECTION
TUBING FOR INSTRUMENT
SUPPLY PRESSURE
PIPE PLUG (MAY ALSO
BE OPTIONAL GAUGE)
1 Relief Valve Body
2 Spring Case
3 Spring
4 Spring Cap
5 Diaphragm
26A9059-B
A2908
Figure 1. Typical Installation Orientations
MAXIMUM ALLOWABLE INLET PRESSURE TO SUPPLY
(1)
PRESSURE REGULATOR
Psig Bar
250 17,2
Key Description
6 Disc Restriction
7 Screen
8 Internal Retaining Ring
9 Machine Screw
11 Diaphragm Disc
Figure 2. Type H800 Backpressure Regulator
Industrial
USA - Headquarters
McKinney, Texas 75070 USA
Tel: 1-800-558-5856
Outside U.S. 1-469-293-4201
Asia-Pacic
Shanghai, China 201206
Tel: 86-21-5899 7887
Europe
Bologna, Italy 40013
Tel: 39 051 4190611
Natural Gas Technologies
USA - Headquarters
McKinney, Texas 75070
Tel: 1-800-558-5856
Outside U.S. 1-469-293-4201
Asia-Pacic
Singapore, Singapore 128461
Tel: +65 6777 8211
Europe
Bologna, Italy 40013
Tel: 39 051 4190611
Industrial/High Purity
TESCOM
Elk River, Minnesota 55330 USA
Tel: 1-763-241-3238
Selmsdorf, Germany 23923
Tel: +49 (0) 38823 31 0
Gallardon, France 28320
Tel: +33 (0)2 37 33 47 00
For further information visit www.emersonprocess.com/regulators
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, Inc.,
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 specications
of such products at any time without notice.
Emerson Process Management 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 product remains solely with the purchaser.
©Fisher Controls International, Inc., 2002; All Rights Reserved
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