1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2
EN FVFA Series
North America
Only
Specifications
The Specifications section lists the specifications for the EN 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), EU type examination certificate, notified body number, gas group, date of manufacture and serial number; other identification and
customer tag number are optional.
Available Constructions
See Table 1 and Figure 2
Gas Group
IIA and IIB3
Flange Sizes and Rating
2 to 16 in. / 50 to 400 mm
CL150 RF and CL150 FF
Housing Size
4 to 30 in. / 100 to 750 mm
Maximum Experimental Safe Gap (MESG)
See Table 2
Maximum Initial Operating Pressure
(1)
Atmospheric
Maximum Operational Temperature (T
o
)
(1)
140°F / 60°C
Temperature Rating of Housing Gaskets
(1)
Fiber Gaskets (standard):
450°F / 232°C
Graphite/Metal (optional):
1600°F / 870°C
Burning Time Rating
Less than 1 minute
Housing Material
Carbon steel, 304 Stainless steel,
316 Stainless steel and Hastelloy
®
Element Material
304 Stainless steel, 316 Stainless steel
and Hastelloy
®
Certification
EN ISO-16852:2016
Table 1.
EN FVFA Series Available Construction
MODEL
FLANGE SIZE
HOUSING SIZE
CERTIFICATION
In.
mm
In.
mm
IIA
IIB3
EN-FVFA-0402
2
50
4
100
X
X
EN-FVFA-0603
3
75
6
150
X
X
EN-FVFA-0803
3
75
8
200
X
X
EN-FVFA-0804
4
100
8
200
X
X
EN-FVFA-1206
6
150
12
300
X
X
EN-FVFA-1608
8
200
16
400
X
X
EN-FVFA-2010
10
250
20
500
X
X
EN-FVFA-2412
12
300
24
600
X
X
EN-FVFA-3014
14
350
30
750
X
EN-FVFA-3016
16
400
30
750
X
Table 2
. Maximum Experimental Safe Gap (MESG)
NATIONAL ELECTRIC
CODE (NEC) GROUP
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION (IEC) GROUP
MESG
TEST GAS LIST
In.
mm
Group D
Group IIA
0.035
>0.90
Propane
Group C
Group IIB3
0.026
≥0.65
Ethylene
Group B
Group IIC
0.020
<0.50
Hydrogen
Hastelloy
®
is a mark owned by Haynes International, Inc.