Pressure/Vacuum Vents
High-performance, American-made fuel nozzles and accessories.

Pressure/Vacuum Vent:
Vent Cap for UST
Model 4885 has three (3) separate valves that address pressure/vacuum conditions in underground storage tanks (UST) and above ground storage tanks (AST).

Ultrasonically welded pressure and vacuuum plate assemblies.
Internal screen to protect the pressure plate from foreign debris in the event of a bad bulk drop
Over pressure valves designed to handle high pressure/flow conditions.
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  • Husky® pressure / vacuum (P/V) vents incorporate three (3) separate valves to control over-pressure and vacuum conditions that arise in storage tanks. The three (3) valve system provides the necessary protection and durability needed in UST and AST vent caps.
  • The vacuum valve is diaphragm operated and provides ten (10) times more sealing force than gravity devices. It consistently opens at 6” – 10” of water column (WC) / 1.5 – 2.5 KPa vacuum.
  • The first over-pressure valve is diaphragm operated, giving ten (10) times more sealing force than gravity devices. It opens at 2.5” – 6” WC / .63 – 1.5 KPa pressure.
  • Model 4885 is not for use in California / EVR applications.
  • Model 4885 is certified to less than 1/3 of the CARB EVR Standard CP-201 which allows installation of three (3) P/V Vents maximum. This reduces installation time by not having to manifold the vent pipes together.
  • Model 4885 is a threaded vent cap that is easily installed by using the caston hex nut which allows tightening without having to go between vent pipes.
Construction
Body Aluminum
Screen 40 Mesh Stainless Steel
Set Screws Stainless Steel
Deflector Aluminum

Click image to view product numbers and specs:

Vent Cap for UST:

Model No. Description
005041 3 in / 76 mm thread to 2 in / 51 mm Thread Pipe Adapter

Vent Cap for UST:

Model No. Description
005426 Pressure / Vacuum Vent Test Adapter

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Model No. Description Shipping Weight Lbs (Kg)
004885 2 in / 51 mm Thread-On Pressure / Vacuum Vent Cap 1.2 (.54)
Construction
Body Aluminum
Screen 40 Mesh Stainless Steel
Set Screws Stainless Steel
Deflector Aluminum