P/V Vent With Flame Arrestor
P/V Vent With Flame Arrestor
Defender Series® Pressure/Vacuum (P/V) vents regulate the pressure at which vapor is allowed to escape from the underground storage tank and the vacuum at which outside air is allowed to enter the tank. The P/V vent’s internal rolling diaphragm delivers consistent and controlled cracking for both low leak and high-pressure conditions while the superior construction of UV-resistant materials extends the overall service life. The in-line vault provides added protection and facilitates at-grade servicing and testing. This eliminates the added expense of lift trucks as well as the potential safety concerns of conducting work at height.
With typical Pressure/Vacuum (P/V) vents only lasting a single 3-year test cycle, Defender Series® P/V vents are built to outlast other vents in their class. With high-grade, UV-resistant materials and premium internal components, Defender Series® P/V vents provide precision regulation of storage tank pressure for the long-haul.
In-Line Vault
The in-line vault allows for safe, cost-effective grade level testing and maintenance while also providing extreme protection from the outdoor elements.
Grade Level Maintenance
The in-line vault promotes safety for the service technician by bringing the P/V vent down to grade level.
Defender Series® P/V vents regulate the pressure at which vapor is allowed to escape from the underground storage tank and the vacuum at which outside air is allowed to enter the tank. Check out these premium design highlights.
Almost half of all injuries in our industry come from falls at height. The in-line vault allows for safe, cost-effective grade level testing and maintenance while also providing extreme protection from the outdoor elements.
Install in-line at grade with the vault and rain cap or end-of-line with the Defender Series® vent stack adapter.
These three models are designed to meet the cracking pressure requirements for regions following the US, UK, and China standards. These models also are designed to incorporate a flame arrestor for regions requiring this option (sold seperately).
US Model
6.2 to 14.9 mbar pressure setting, -14.9 to 24.9 mbar vacuum setting.
UK Model
35 mbar maximum pressure setting, -2 mbar maximum vacuum setting.
China Model
20 to 30 mbar pressure setting, -15 to -20 mbar vacuum setting.
General
- Pressure setting:
- US model: 6.2 to 14.9 mbar
- UK model: 35 mbar maximum
- CN model: 20 to 30 mbar
- Vacuum setting:
- US model: -14.9 to 24.9 mbar
- UK model: -2 mbar maximum
- CN model: -15 to -20 mbar
- Pressure leak rate: ≤ .05 CFH at +2" WC
- Vacuum leak rate: ≤ .21 CFH at -4" WC
- Maximum flow rate: 8,000 SCFH at 2 PSI
- Operating temperature: -22° to 122° F (-30° to 50° C)
Components
- P/V vent
- Rain cap
- In-line vault
- In-line vault faceplate
- Defender Series® vent stack adapter
- Flame Arrestor option (fits both adapters and vault applications with 804101 P/V vent models)
Dimensions
Materials
- P/V vent body: UV-resistant polymer
- Seals: UL Listed elastomers
- Screens: Stainless steel
- Rain cap: UV-resistant polymer
- In-line vault body: E-coated cast ductile iron
- In-line vault cover: Stainless steel
Approvals/Certifications
- UL2583 listed.
- Three models to meet the cracking pressure requirements for regions following the US, UK, and China standards.
- Flame Arrestor meets EN ISO 16852.
In-LineVault
| Model Number | Description |
|---|---|
| 804110909 | Vault Assembly with 2" NPT Inlet/Outlet threads |
| 804110910 | Vault Assembly with 2" BSPT Inlet/Outlet threads |
-
Vault Assembly includes vault body, cover, cover seal, and cover fasteners only (P/V Vent Valve, Vent (rain) Cap, and Flame Arrestor options sold separately)
P/V Vent Valves
| Model Number | Description |
|---|---|
| 804101901 | P/V Vent Valve with US cracking pressures |
| 804101902 | P/V Vent Valve with UK cracking pressures |
| 804101903 | P/V Vent Valve with CN cracking pressures |
-
P/V Vent Valves include vent valve, sealing o-ring, and inlet screen only (Adapters, Vaults, and Flame Arrestor options sold separately).
Adapters & Replacement Parts
| Model Number | Description |
|---|---|
| 804110906 | End of Line Adapter with 2" NPT Inlet threads |
| 804110907 | End of Line Adapter with 2" BSPT Inlet threads |
| 804110908 | Flame Arrestor Kit (includes arrestor and replacement P/V sealing o-ring) |
| 804110902 | Vault faceplate gasket |
| 804110903 | (2) replacement tamper-resistant screws for vault faceplate |
| 804110905 | Vault L-key wrench (T40 tip size) |
| 804110904 | Vault service plug, prevents vapors from escaping during maintenance |
| 804023901 | Vent (rain) cap |
Featured
Catalogs
| Title | Type | Size | |
|---|---|---|---|
 |
FFS-0216 (UL) FFS Product Catalog.pdf | 62.67 MB | |
 |
FFS-0807 (EN) Product Catalogue.pdf | 48.43 MB | |
 |
FFS-0367 (UL) Site Starters Ordering Guide.pdf | 52.07 MB |
Manuals
| Title | Type | Size | |
|---|---|---|---|
 |
804031001 PV Vent Installation Guide.pdf | 1.47 MB | |
 |
804031001SP PV Vent Installation Guide.pdf | 1.61 MB | |
 |
10000007972 Defender Series Flame Arrester Installation Guide.pdf | 0.16 MB |