Teflon
®
and Viton
®
are marks owned by E. I. du Pont de Nemours and Company.
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Enardo
Enardo
Series
Series
Connection
Size
(4, 8, 12, 16, 18,
20 and 24 in.)
Connection
Size
(16, 20 and
24 in.)
Base and
Arm
2 = Carbon
Steel
3 = 304 Stainless
Steel
4 = 316 Stainless
Steel
5 = Exotic
Base, Arm
and Hood
1 = Carbon Steel
2 = 304 Stainless
Steel
3 = 316 Stainless
Steel
4 = Exotic
Disk Cover
1 = Aluminum
3 = 304 Stainless
Steel
4 = 316 Stainelss
Steel
5 = Exotic
Disk and
Seal Support
1 = Aluminum
2 = 316 Stainless
Steel
3 = Exotic
Gasket
T = Teflon
®
N = Buna-N
V = Viton
®
X = Special
Vacuum Pallet
and Seat
1 = Polyphenylene
Sulfide
2 = 316 Stainless
Steel
3 = Exotic
Bolt
Pattern
1 = ANSI
2 = API
Gasket
Seal
T = Teflon
®
N = Buna-N
V = Viton
®
X = Special
Pressure
Settings
n = in. w.c.
z = oz./sq. in.
2.0. to 32.0 oz./sq. in.
(0.5 oz./sq. in.
increments)
3.5 to 55.0 in. w.c.
(1.0 in. w.c.
increments)
8.6 to 138 mbar
(2.2 mbar increments)
Bolt
Pattern
1 = ANSI
2 = API
Options
1 = Special
Coating
2 = Optional
Hardware
3 = Other
4 = Smart
Wireless
Monitoring
Pressure
Settings
n = in. w.c.
z = oz./sq. in.
4.0 to 16.0 oz./sq. in.
(0.5 oz./sq. in.
increments)
7.0 to 27.0 in. w.c.
(0.5 in. w.c. increments)
17.4 to 67.2 mbar
(2.2 mbar increments)
Vacuum
Settings
0.5,
0.75,
1.0 or
2.0 oz./sq.in.
Options
1 = Special
Coating
2 = Optional
Hardware
3 = Other
Enardo 2000 Series
Enardo 2500 Series
Figure 5.
Emergency Pressure Relief Vent Model Number
Product Identification and Marking
Hazardous Locations
Fisher™ Emergency Pressure Relief Vents are available with
outer housings of carbon steel, stainless steel or aluminum
as indicated in Figure 4.
Nameplate
A nameplate is attached to the vent and contains the
following information:
• Model Number
– Ex. 2024-24T-1
• Connection Flange Size
– 24 in.
• Serial Numbe
r
• Tag Number
(Optional)
•
Notified Body Number
– Ex. 2460
• Cat. No.
(Category Number)
- Category 1 – Stainless steel, Carbon steel or Coated
aluminum vents
- Category 2 – uncoated aluminum vents
• Date
– date of manufacture
•
Certificate
– Ex. PRESAFE 17 ATEX 10273X
• Pressure Setting and Flow Rate
-
Setting
– Ex. Z4.0
-
Flow Rate SCFH (Air)
– Ex. 00000
• Vacuum Setting and Flow Rate
(Enardo 2500 Series only)
-
Setting
– Ex. Z0.5
-
Flow Rate SCFH (Air)
– Ex. 00000
Properly-sized Enardo 2000 and Enardo 2500 Series
meet the API standard 2000 for emergency venting due to
fire exposure. Enardo 2500 Series handles high capacity
vacuum flow for emergency pump-out of product. These
vents provide quick easy access for tank inspection
and maintenance.
Remote Monitoring Option
The Smart Wireless monitoring option is available with the
Enardo 2000 Series. It allows the detection of the Open
or Closed position of the emergency vent from a remote
site. Under normal conditions, the emergency vent should
be Closed. An Open indication can alert personnel that
there is a potential safety or emissions issue that should be
further investigated.
3
Enardo 2000 and Enardo 2500 Series
Outside North
America Only
