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VD/SV-AD & VD/SV-ADL Vacuum Relief Valve

Brand: PROTEGO
The deflagration proof VD/SV-AD(L) type Protego valve is a highly developed combined pressure/vacuum relief valve for high flow capacities with an integrated flame arrester unit. 

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

The valve offers reliable protection against excess pressure and vacuum, preventing outbreathing of product vapor and inbreathing of air almost up to the set pressure and also protects against atmospheric deflagration. 

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

The deflagration-proof Protego VD/SV-AD(L) valve is available for substances from explosion groups IIA to IIB3 (NEC group D to C MESG ≥0.65 mm).
Features
  • Requires only 10% overpressure to full lift
  • Through 10% technology set pressures and vacuum closer to MAWP and MAWV can be reached which results in product loss reduction compared to conventional 40% and 100% overpressure technology vents (Compare API 2000)
  • More 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
  • FLAMEFILTER integrated into the valve saves space, weight and reduces cost
  • FLAMEFILTER protected from clogging through product vapour
  • FLAMEFILTER has a low pressure drop
  • Flame transmission proof condensate drain
  • Maintenance friendly design
  • Modular design enables individual FLAMEFILTER and the valve pallet to be replaced
  • Superior technology for API tanks with low MAWP and MAWV
The deflagration proof VD/SV-AD(L) type Protego valve is a highly developed combined pressure/vacuum relief valve for high flow capacities with an integrated flame arrester unit. 

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

The valve offers reliable protection against excess pressure and vacuum, preventing outbreathing of product vapor and inbreathing of air almost up to the set pressure and also protects against atmospheric deflagration. 

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

The deflagration-proof Protego VD/SV-AD(L) valve is available for substances from explosion groups IIA to IIB3 (NEC group D to C MESG ≥0.65 mm).
Features
  • Requires only 10% overpressure to full lift
  • Through 10% technology set pressures and vacuum closer to MAWP and MAWV can be reached which results in product loss reduction compared to conventional 40% and 100% overpressure technology vents (Compare API 2000)
  • More 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
  • FLAMEFILTER integrated into the valve saves space, weight and reduces cost
  • FLAMEFILTER protected from clogging through product vapour
  • FLAMEFILTER has a low pressure drop
  • Flame transmission proof condensate drain
  • Maintenance friendly design
  • Modular design enables individual FLAMEFILTER and the valve pallet to be replaced
  • Superior technology for API tanks with low MAWP and MAWV
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Displaying prices & availability for Ohio, United States in USD. Change location.

Models matching criteria: 2
VD/SV-ADL
  • Model - Pressure/Vacuum Relief Valve with Expanded Housing
Out of Stock
VD/SV-AD
  • Model - Pressure/Vacuum Relief Valve with Housing, Standard Design
Out of Stock
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Specifications

Brand

Approvals & Certifications

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

Approvals & Certifications

  • ATEX
  • CEN
  • IEC
  • NEC Groups C, D MESG ≥ 0.65 mm

Diaphragm Material

  • FEP

Enclosure Finish

  • ECTFE

Enclosure, Body Material

  • Stainless Steel
  • Steel

Environmental Protection

  • Explosion-proof Groups IIA to IIB3

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

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