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VD/SV-HRL Pressure or Vacuum Relief Valve

Brand: PROTEGO
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The atmospheric deflagration and endurance burning proof VD/SV-HRL type Protego valve is a highly developed combined pressure/vacuum relief valve for high flow capacities with an integrated flame arrester. 

It is primarily used as a safety device for flame transmission proof in-and outbreathing on tanks, containers and process engineering apparatus. 

The valve offers reliable protection against excess pressure and vacuum, prevents the inbreathing of air and product losses almost up to the set pressure and also protects against atmospheric deflagration and endurance burning if stabilized burning occurs. 

The Protego flame arrester unit is designed to achieve minimum pressure drop with maximum safety. 

The Protego VD/SV-HRL device is available for substances of explosion group IIA (NEC group D MESG >0.9 mm).
Features
  • Requires only 10% overpressure to full lift
  • Through 10% technology higher set pressures can be used which results in product loss reduction compared to conventional 40% and 100% overpressure technology vents (Compare API 2000)
  • Increased design flexibility through higher reseating pressures; vents reseat when conventional vent is still discharging
  • High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
  • The valve disc is guided within the housing to protect against harsh weather conditions
  • Can be used as protective system according ATEX in areas subject to explosion hazards
  • FLAMEFILTER provides protection against atmospheric deflagration and endurance burning
  • FLAMEFILTER integrated into the valve saves space and weight
  • FLAMEFilter proteted from clogging caused by product vapours
  • Flame transmission proof condensate drain
  • Maintenance friendly design
  • Modular design enables individual FLAMEFILTERS and valve pallets to be replaced
The atmospheric deflagration and endurance burning proof VD/SV-HRL type Protego valve is a highly developed combined pressure/vacuum relief valve for high flow capacities with an integrated flame arrester. 

It is primarily used as a safety device for flame transmission proof in-and outbreathing on tanks, containers and process engineering apparatus. 

The valve offers reliable protection against excess pressure and vacuum, prevents the inbreathing of air and product losses almost up to the set pressure and also protects against atmospheric deflagration and endurance burning if stabilized burning occurs. 

The Protego flame arrester unit is designed to achieve minimum pressure drop with maximum safety. 

The Protego VD/SV-HRL device is available for substances of explosion group IIA (NEC group D MESG >0.9 mm).
Features
  • Requires only 10% overpressure to full lift
  • Through 10% technology higher set pressures can be used which results in product loss reduction compared to conventional 40% and 100% overpressure technology vents (Compare API 2000)
  • Increased design flexibility through higher reseating pressures; vents reseat when conventional vent is still discharging
  • High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
  • The valve disc is guided within the housing to protect against harsh weather conditions
  • Can be used as protective system according ATEX in areas subject to explosion hazards
  • FLAMEFILTER provides protection against atmospheric deflagration and endurance burning
  • FLAMEFILTER integrated into the valve saves space and weight
  • FLAMEFilter proteted from clogging caused by product vapours
  • Flame transmission proof condensate drain
  • Maintenance friendly design
  • Modular design enables individual FLAMEFILTERS and valve pallets to be replaced
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Specifications

Brand

Approvals & Certifications

  • ATEX
  • CEN
  • IEC
  • NEC Group D MESG > 0.9 mm

Approvals & Certifications

  • EN 14015, EN 16852
  • ISO 28300 (API 2000), ISO 6358, ISO 16016
  • TÜV (Technischer Uberwachungsverein)

Diaphragm Material

  • FEP

Enclosure Finish

  • ECTFE

Enclosure, Body Material

  • Stainless Steel
  • Steel

Environmental Protection

  • Explosion-proof Group IIA

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

  • Valve Pallet: Aluminum
  • Weather Hood, Flamefilter Cage, Valve Pallet: Stainless Steel
  • Weather Hood, Flamefilter Cage: Steel

Operating Temperature

  • 0° to 60° C (32° to 140° F)

Pressure Range

  • psi: 0.050 to 0.507 (kPa: 0.35 to 3.5, Mbar: 3.5 to 35)
  • psi: -0.507 to -0.029 (kPa: -3.5 to -0.2, Mbar: -35 to -2) - Vacuum

Seat / Seal Material

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