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Instruction Manual
D103771X012
September 2017
EN Series Free Vent Flame Arrestor
Table of Contents
Introduction ........................................................................................1
Specifications ....................................................................................2
Principle of Operation ........................................................................3
Factors Affecting Flame Arrestor Performance ..................................3
Installation .........................................................................................3
Maintenance ......................................................................................5
Recommended Spare Parts ..............................................................7
Parts Ordering ...................................................................................7
Parts List............................................................................................8
WARNING
!
Failure to follow these instructions or to properly
install and maintain this equipment could result in
an explosion, fire and/or chemical contamination
causing property damage and personal injury
or death.
Enardo flame arrestor must be installed, operated
and maintained in accordance with federal,
state and local codes, rules and regulations,
and Emerson Process Management Regulator
Technologies Tulsa, LLC instructions.
Failure to correct trouble could result in a
hazardous condition. Call a qualified service
person to service the unit. Installation, operation
and maintenance procedures performed by
unqualified person may result in improper
adjustment and unsafe operation. Either condition
may result in equipment damage or personal
injury. Only a qualified person must install or
service the flame arrestor.
Free Vent Flame Arrestor
Figure 1. Typical Enardo Free Vent Flame Arrestor
Introduction
Scope of the Manual
This Instruction Manual provides instructions
for installation, startup, maintenance and parts ordering information
for the Enardo Free Vent Flame Arrestor (FVFA).
Product Description
Enardo Free Vent Flame Arrestors are designed to allow free venting
in combination with flame protection for vertical vent applications.
This product is installed at the top of an atmospheric vent line or
storage tank.
Free Vent Flame Arrestors are typically used for the end of
line applications when the system operating pressure is near
atmospheric levels and when there is minimal probability of a flame
stabilizing on the flame arrestor element for an extended period.
Table of Contents
Related Manuals for Emerson Enardo EN Series
Summary of Contents for Emerson Enardo EN Series
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Page 1: Table Of Contents
Product Description and Emerson Process Management Regulator Technologies Tulsa, LLC instructions. Enardo Free Vent Flame Arrestors are designed to allow free venting Failure to correct trouble could result in a in combination with flame protection for vertical vent applications. -
Page 2: Specifications
Free Vent Flame Arrestor Specifications The Specifications section lists the specifications for the Free Vent Flame Arrestors. The following information is stamped on the nameplate attached to the arrestor: model number, flange size and rating, maximum initial operating pressure, EN number (European Standard), EC type examination certificate, notified body number, gas group, date of manufacture and serial number;... -
Page 3: Principle Of Operation
Free Vent Flame Arrestor WARNING Flame Arrestors have installation and application limits Type designation in accordance with EN ISO-16852:2010 /D = n/a = 1 min BC: b; t Ex. G IIA = 60°C = 0.10 MPa (absolute) MARKING PLATE (SEE TABLE 2) HAZARDOUS LOCATIONS Figure 3. - Page 4 Free Vent Flame Arrestor Table 3. Torque Values for Raised Face Flange (Steel Only) BOLT DIAMETER TORQUE NOMINAL PIPE DIAMETER NUMBER OF BOLTS Ft-lbs N•m 0.50 12.70 12.20 1-1/4 0.50 12.70 17.63 1-1/2 0.50 12.70 24.40 0.63 16.00 47.45 2-1/2 0.63 16.00 55.59...
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Page 5: Maintenance
Free Vent Flame Arrestor Table 5. Torque Correction Factors for Common Lubricants Applied on Flanges DESCRIPTION COEFFICIENT OF FRICTION MULTIPLY TORQUE VALUE IN TABLE 3 BY Machine Oil f = 0.15 0.75 API SA2 Grease f = 0.12 0.60 f = 0.11 0.55 Never-Seez ®... - Page 6 Free Vent Flame Arrestor PATTERN 1 PATTERN 2 PATTERN 3 PATTERN 4 PATTERN 5 Figure 5. Flange Pattern Tightening Sequence Table 6. Tightening Steps and Torque Values ENARDO EN FREE VENT FLAME ARRESTOR SERIES WITH STEEL TIGHTENING STEPS AND TORQUE (FT•LB / N•m) OR STAINLESS STEEL END SECTIONS ONLY Model Pattern...
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Page 7: Recommended Spare Parts
Free Vent Flame Arrestor Table 7. Torque Correction Factors for Common Lubricants DESCRIPTION COEFFICIENT OF FRICTION MULTIPLY TORQUE VALUE IN TABLE 6 BY Machine Oil f = 0.15 1.00 API SA2 Grease f = 0.12 0.80 Never-Seez (Ni base) f = 0.11 0.73 ®... -
Page 8: Parts List
D103771X012 © 2014, 2017 Emerson Process Management Regulator Technologies, Inc. All rights reserved. 09/17. Emerson Automation Solutions The Emerson logo is a trademark and service mark of Emerson Regulator Technologies Electric Co. All other marks are the property of their prospective owners.