Pressure and Vacuum Relief Vent
SERIES 6000 PVRV
- Direct-acting pressure and vacuum relief vent (PVRV)
- Patent-pending Unidirectional Binary Relief (UBR) valve technology offers higher flow rates with less overpressure while offering flutter-free operation.
- Offered in multiple connection sizes with flexible pressure and vacuum relief settings in a wide array of pressure + vacuum and pipe-away configurations.
- Soft Viton gaskets to combat fugitive emissions, with four-point pallet guides for repeatable reseating, and bubble-tight sealing up to 90% of set pressure.
- Flow rates third-party verified.
- Made and stocked in Canada.
Direct Acting Pressure and Vacuum Relief Vent
- The Series 6000 is actuated by tank pressures and vacuums directly. No external instrumentation or controls are required.
- Relief values set via weights on valve pallets, and adjustable in 0.5 ozsi [0.22 kPa] increments.
UBR Valve
- A vent equipped with UBR valve technology is capable of higher relative relief flow rates at lower overpressures as compared to a conventional direct-acting valve.
- This allows the set pressure of the UBR valve-equipped vent to be much closer to the design pressure of the tank or process than a conventional direct-acting valve.
- Both the pressure and vacuum valves in the vent can be configured as Hawkeye’s patent-pending Unidirectional Binary Relief (UBR) valve or as a standard weight-loaded direct-acting valve.
Flexible Configuration
- The Series 6000 PVRV is available in 2, 3, 4, and 6” ANSI 150# connections.
- 8” API 12B/F (gauge hatch) connections are also available, sharing the flow characteristic of the 6” ANSI 150# device.
- The PVRV can be configured as an end-of-line vent, with pressure and vacuum relief to the atmosphere, or optionally as an in-line vent with pressure relief to an integral 6” ANSI 150# pipe-away connection.
- The device can be configured to provide both pressure and vacuum relief, pressure relief only, or vacuum relief only.
Composite FKM Gasket
- The composite gasket bonds sponge Viton™ (eFKM), to standard Viton™ (FKM) for durability.
- The soft eFKM conforms to the contoured seat to improve the seal while the standard FKM ensures the ruggedness and reliability of the gasket.
- Bubble-tight sealing to 90% of set pressure is achievable.
Precision Components
- Precision molded and machined sealing components provide consistent sealing and venting performance.
- Glass-filled Nylon pallets and seats provide excellent chemical, corrosion, temperature, and wear resistance while remaining light, strong, and extremely durable.
Full Encompassing Guide
- The full-encompassing pallet guide on the Series 6000 PVRV provides full confidence that the internal moving components will not become dislodged or misaligned.
- 4 point contact reduces friction, wear, and the risk of becoming stuck over a full contact guide.
Empirical Flow Characteristic Data
- Data used to determine the pressure and vacuum relief flow rates were generated from full-scale flow characteristic determination conducted on all vents in the summer of 2017.
- All data was collected and verified by C-FER Technologies (1999) Inc. in accordance with API 2000, 7th Ed. Full report available upon request.
ACI Compressors
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Series 6000 PVRV mounted on flow test apparatus, June 2017. Photo courtesy C-FER Technologies (1999) Inc.
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