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: Types 66, 66Z and 66ZZ
Instruction Manual, D100247X012.
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:
.
PRODUCT SIZE
CATEGORIES
FLUID TYPE
DN 50 to 100 / 2 to 4 in.
SEP
1
Specifications
Body Sizes and Styles
See Table 1
Maximum Allowable Inlet Pressures
(1)
Emergency Inlet Pressure:
Type 66, 66Z, 66ZZ or 66 Series Vacuum
Breakers:
1.72 bar / 25 psig positive pressure
66 Series Vacuum Regulators:
0.55 bar
differential / 8 psig or 16.3 in. Hg vacuum
Maximum Safe Pressure to Avoid Internal
Parts Damage:
Type 66:
0.69 bar / 10 psig
Type 66Z:
0.34 bar / 5 psig
Type 66ZZ:
0.14 bar / 2 psig
66 Series Vacuum Regulators or Breakers:
No more than 0.07 bar differential / 1 psig change
from spring setting
Maximum Operating Inlet Pressure
Recommended for Good Performance:
Type 66, 66Z or 66 Series Vacuum Breakers:
0.34 bar / 5 psig positive pressure
Type 66ZZ:
0.14 bar / 2 psig
66 Series Vacuum Regulator:
15 mbar differential /
6 in. w.c. or 0.4 in. Hg vacuum
Maximum Allowable Outlet Pressures
(1)
Emergency Outlet (Casing) Pressure:
Type 66, 66Z or 66ZZ:
0.55 bar / 8 psig
positive pressure
66 Series Vacuum Regulator:
1.01 bar differential /
14.7 psi or 29.9 in. Hg vacuum
66 Series Vacuum Breakers:
0.55 bar differential /
8 psi or 16.3 in. Hg vacuum
Maximum Safe Pressure to Avoid Internal
Parts Damage:
Type 66, 66Z or 66ZZ:
0.07 bar differential / 1 psig
above outlet pressure setting
66 Series Vacuum Regulator:
No more than 0.07 bar
differential / 1 psig change from spring setting
Maximum Operating Pressure Recommended
for Good Performance (66 Series Vacuum
Regulators or Breakers Only):
Vacuum Regulators:
0.69 bar differential / 10 psig
or 20.4 in. Hg vacuum
Vacuum Breakers:
15 mbar differential / 6 in. w.c.
or 0.4 in. Hg vacuum
Proof Test Pressure
All Pressure Retaining Components have been
proof tested per Directive.
Outlet Control Pressure Ranges
(1)
See Table 2
Elastomer Temperature Capabilities
Nitrile (NBR) Standard Elastomers:
-40 to 82°C /
-40 to 180°F
Fluorocarbon (FKM) Elastomers:
-18 to 177°C /
0 to 350°F
Ethylenepropylene (EPDM) Elastomers:
-40 to
135°C / -40 to 275°F
Installation
!
WARNING
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 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.
1. The pressure/temperature limits in this installation guide and any applicable standard or code limitation should not be exceeded.
Type 66, 66Z and 66ZZ
Installation Guide
D100247X014
English – November 2008
