P/V Vent With In-Line Vault

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P/V Vent With In-Line Vault

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.

SUPERIOR QUALITY, SAFE SERVICING, MINIMAL MAINTENANCE

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.

HIGHLIGHTS

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CARB CERTIFICATION

Defender Series® Pressure Vacuum Vents (P/V Vents) have certification from the California Air Resources Board (CARB) Enhanced Vapor Recovery (EVR) under Executive Orders VR-101, VR-102, VR-104, and VR-105.  

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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.

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PRECISION TANK VENTING

The premium construction of the internal rolling diaphragm delivers consistent and controlled cracking for both low leak and high pressure conditions. Ensure your tank venting system is tight and dependable in any pressure condition.

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Grade Level Maintenance

The in-line vault promotes safety for the service technician by bringing the P/V vent down to grade level.

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PREMIUM TANK VENTING

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.

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Debris Screen & Rain Cover

A stainless steel wire mesh debris screen keeps dirt, insects, and animals from disrupting the venting system. The rain cover protects vent lines and storage tanks from water intrusion.

Inlet Screen

An internal inlet screen protects the P/V vent from tank debris.

One-Turn Locking Mechanism

The one-turn locking mechanism provides easy installation and removal for servicing.

Compatibility

P/V vents are compatible with all fuel types and manifolded applications, UL2583 listed, and meet the requirements of EPA 40 CFR part 63 for gasoline dispensing facilities.

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BRING TANK VENTING IN-LINE

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.

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Solid Construction

The cast iron construction, tamper-resistant security bolts, and stainless steel faceplate guard the P/V vent from weather and tampering while placing it at grade level.

Easy Access

The stainless steel gasketed faceplate includes a swivel pin that holds it in place during service.

Drain Plug

An integrated drain plug facilitates draining of condensate.

Rain Cap

The in-line vault utilizes a UV-resistant Vent (rain) Cap with a stainless steel mesh debris shield for the top of the vent stack.

PRECISION ROLLING DIAPHRAGM

Ensure your tank venting system is tight and dependable in any pressure condition. The premium construction of the internal rolling diaphragm delivers consistent and controlled cracking for both low leak and high-pressure conditions.

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Vacuum Cracking

Vacuum pressure causes the poppet to pull away from its upper seal, letting air in to rebalance the tank pressure.

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Pressure Cracking

Vapor pressure in the tank pushes the poppet away from its lower seal, letting vapor out to rebalance tank pressure.

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Over-Pressure Cracking

For high pressure cracking scenarios, the rolling diaphragm allows the poppet to open even further to let a larger volume of vapor out of the tank.

REPLACEMENT-READY

Defender Series®  P/V vents are dual-threaded, making them easy to swap out with existing 2” P/V vents. The standard size hex nut integrated into the top of the rain cap makes installation with a standard wrench simple –no specialized tools required.

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Replacement

The internal female threads are compatible with OPW® vent stack adapters for easy retrofit onto existing sites as well as most common test devices.

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New or Retrofit

Defender Series® P/V vents come with an included vent stack adapter which threads easily on to a 2” vent stack for new or retrofit applications.

VERSATILE INSTALLATION CAPABILITES

Install in-line at grade with the vault and rain cap or end-of-line with the Defender Series® vent stack adapter. The P/V vent is also compatible for retrofit onto existing OPW® vent stack adapters.

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In-Line Vent Stack Application

Install in-line at grade with the in-line vault and rain cap.

End-of-Line Application

Install end-of-line with the Defender Series® vent stack adapter

OPW® Retrofit Upgrade Application

Compatible for retrofit onto existing OPW® vent stack adapters.

Pressure setting 2.5" to 6.0" WC
Vacuum setting -6.0" to -10.0" WC
Pressure leak rate ≤ 0.05 CFH at +2" WC
Vacuum leak rate ≤ 0.21 CFH at -4" WC
Maximum flow rate 8000 SCFH at 2 PSI
Operating temperature 22° F at 122° F (-30° C at 50° C)
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
  • CARB Enhanced Vapor Recovery (EVR) certified under Executive Orders VR-101, VR-102, VR-104, and VR-105
  • Meets the requirements of EPA 40 CFR part
    63 for Gasoline Dispensing Facilities

Components

  1. P/V vent
  2. Rain cap
  3. In-line vault
  4. In-line vault faceplate
  5. Defender Series® vent stack adapter
  6. OPW® vent stack adapter (not available for purchase)
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Dimensions

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In-Line Vault

Install in-line at grade with the in-line vault and rain cap.

Model Description
DPVV-EVR
(1) CARB certified Defender Series® P/V Vent with (1) In-line vault and (1) rain cap

End-of-Line

Install end-of-line with the Defender Series® vent stack adapter

Model Description
804100903 CARB certified Defender Series® P/V vent, and Defender Series® 2" vent stack adapter

Service Parts

 

Model Description
804100940 CARB certified Defender Series® P/V vent (includes internal and external sealing O-rings) 
804110909 Vault Assembly with 2" NPT Inlet/Outlet threads
804023901 Vent (rain) cap
804110906 End of Line Adapter with 2" NPT Inlet threads
804110902 Vault faceplate gasket
804110903
(2) replacement tamper-resistant screws for vault faceplate
804110904 Vault service plug, prevents vapors from escaping during maintenance