Images are representations only.

VD/SV-HR Pressure or Vacuum Relief Valve

Brand: PROTEGO
The deflagration-proof and endurance burning-proof VD/SV-HR 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 in tanks, containers and process engineering apparatus. 

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

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

The deflagration and endurance burning proof Protego VD/SV-HR device 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 for explosion group IIA (NEC group D) vapors
  • 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)
  • More design flexibility through higher reseating pressures; vents reseat when conventional vent is still discharging costly product or nitrogen
  • The valve disc is guided within the housing to protect against harsh weather conditions
  • High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
  • Can be used as protective system according to ATEX in areas subject to explosion hazards
  • Safe against deflagration and endurance burning for explosion group IIA and IIB3 (NEC group D and C) vapors
  • High flow capacity through large FLAMEFILTER cross-section, results in low pressure drop
  • FLAMEFILTER provides protection against atmospheric deflagration and endurance burning
  • FLAMEFILTER integrated into the valve saves space, weight and reduces cost
  • FLAMEFILTER protected from clogging caused by product vapors
  • Flame transmission proof condensate drain
  • Maintenance friendly design
  • Modular design enables individual FLAMEFILTERS and valve pallets to be replaced
The deflagration-proof and endurance burning-proof VD/SV-HR 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 in tanks, containers and process engineering apparatus. 

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

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

The deflagration and endurance burning proof Protego VD/SV-HR device 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 for explosion group IIA (NEC group D) vapors
  • 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)
  • More design flexibility through higher reseating pressures; vents reseat when conventional vent is still discharging costly product or nitrogen
  • The valve disc is guided within the housing to protect against harsh weather conditions
  • High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
  • Can be used as protective system according to ATEX in areas subject to explosion hazards
  • Safe against deflagration and endurance burning for explosion group IIA and IIB3 (NEC group D and C) vapors
  • High flow capacity through large FLAMEFILTER cross-section, results in low pressure drop
  • FLAMEFILTER provides protection against atmospheric deflagration and endurance burning
  • FLAMEFILTER integrated into the valve saves space, weight and reduces cost
  • FLAMEFILTER protected from clogging caused by product vapors
  • Flame transmission proof condensate drain
  • Maintenance friendly design
  • Modular design enables individual FLAMEFILTERS and valve pallets to be replaced

Specifications

Brand

Approvals & Certifications

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