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Instantly add the DV/ZU Pressure & Vacuum Relief Valve, In-Line and 50,000+ more product series to your store or catalog  
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Protego Pressure and Vacuum Relief Valve, In-Line, DV/ZU

DV/ZU Pressure & Vacuum Relief Valve, In-Line

Brand: PROTEGO
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The Protego in-line valve DV/ZU is a state-of-the-art pressure and vacuum relief valve with separate flange connections for pressure and vacuum breathing. 

Typically the valve is installed in the in-and outbreathing lines of tanks, vessels and process apparatus to protect against unallowable high and low pressure. 

The valve prevents emission losses almost up to the set pressure and prevents air intake almost up to set vacuum. 

The valve is designed so that in cases in which the set pressure is exceeded the vapors are vented into a discharge pipe (e.g. vent header). 

When the set vacuum is exceeded atmospheric air is pulled into the system. 

Due to its design the vacuum valve pallet is one size smaller than the pressure valve pallet.
Features
  • "Full lift type" technology valve utilizes only 10% overpressure to reach full lift
  • High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
  • Based on 10% technology the set pressure is close to the opening pressure which results in best possible pressure management of the system compared to conventional 40% or 100% technology valves
  • Optimized flow performance, which reduces capital cost to a minimum as smaller sized valves may be used
  • Separate flange connection for in-and out-breathing line
  • Can be installed in explosion hazardous areas
  • Housing designed to psi: 150 (kpa: 1,034, bar: 10.34) (PN 10)
  • Maintenance friendly design

1 - 2 of 2 Part Numbers
DV/ZU
DV/ZU
  • Model - In-Line Pressure & Vacuum Relief Valve, Standard Design
DV/ZU-H
DV/ZU-H
  • Model - In-Line Pressure & Vacuum Relief Valve with Heating Jacket
1 - 2 of 2 Part Numbers

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Specifications

Brand

Approvals & Certifications

  • ISO 6358, ISO 16016
  • TÜV (Technischer Uberwachungsverein)

Diaphragm Material

  • FEP

Enclosure Finish

  • ECTFE

Enclosure, Body Material

  • Stainless Steel
  • Steel

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150# ASME B16.5

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 150# ASME B16.5

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150# ASME B16.5

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150# ASME B16.5

Flange Size - 6” (DN 150)

  • 6” (DN 150) - 150# ASME B16.5

Flange Type

  • Raised Face (RF)
  • Smooth Finish

Gasket Material

  • PTFE

Materials of Construction

  • Heating Jacket, Valve Pallet: Stainless Steel
  • Heating Jacket: Steel
  • Valve Pallet: Aluminum

Pressure Range

  • psi: 0.029 to 0.87 (kPa: 0.2 to 6, Mbar: 2 to 60)
  • psi: -0.725 to -0.050 (kPa: -5 to -0.35, Mbar: -50 to -3.5) - Vacuum

Seat / Seal Material

  • Seal: FEP
  • Seal: Metal
  • Seal: PTFE
  • Valve Seat: Stainless Steel

Documentation

Data Sheets

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