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; 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 12 inches / 50 to 300 mm
CL150 RF and CL150 FF
Housing Size
4 to 24 inches / 100 to 600 mm
Operational Temperature (T
o
)
(1)
140°F / 60°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
®
EN Number (European Standard)
EN ISO-16852
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
Figure 2.
Free Vent Flame Arrestor Available Constructions and Model Numbering System
EN
/
-
-
FVFA
Housing
Size
Connection
Size
IEC
Gas
Group
Housing
Material
Element
Material
Connection
Type
Options
04 = 4 inches
through
24 = 24 inches
01 = 1 inch
through
12 = 12 inches
IIA
IIB3
C = Carbon Steel
4 = 304 SST
6 = 316 SST
H = Hastelloy
®
4 = 304 SST
6 = 316 SST
H = Hastelloy
®
F = Flat face
flange
R = Raised
face
flange
2
=
Pressure
Tap
3
=
Temperature
Probe
Tap
4
=
Miscellaneous
5
=
Protective
coating
6
=
Special
feature
Table 1.
EN FVFA Series Available Construction
MODEL
FLANGE SIZE
HOUSING SIZE
Inch
mm
Inch
mm
EN-FVFA-0402
2
50
4
100
EN-FVFA-0603
3
75
6
150
EN-FVFA-0803
3
75
8
200
EN-FVFA-0804
4
100
8
200
EN-FVFA-1206
6
150
12
300
EN-FVFA-1608
8
200
16
400
EN-FVFA-2010
10
250
20
500
EN-FVFA-2412
12
300
24
600
Hastelloy
®
is a mark owned by Haynes International, Inc.
2
Free Vent Flame Arrestor
North America
Only
