Images are representations only.

UB/VF Vacuum Diaphragm Valve

Brand: PROTEGO
The deflagration-proof UB/VF type Protego diaphragm valve is a state-of-the-art vacuum relief valve combining the function of a dynamic and static flame arrester. 

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

The valve offers reliable protection against vacuum build up, prevents the inbreathing of air and product losses almost up to the set vacuum and protects against atmospheric deflagration. 

The Protego UB/VF diaphragm valve has proven its performance over many years in a great variety of severe applications in the petrochemical and chemical industry. 

Worldwide it is the only vent which functions in services such as styrene and acrylics. 

The set vacuum is adjusted with a freeze resistant water-glycol mixture, which assures safe operation under extreme cold weather conditions. 

The Protego UB/VF valve is available for substances from explosion group IIB3 (NEC group C MESG ≥0.65 mm).
Features
  • High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
  • Set vacuum close to the design vacuum enables optimum pressure maintenance in the system
  • High flow capacity
  • Can be used as a protective system according to ATEX in areas subject to an explosion hazard
  • Protection against atmospheric deflagrations for products up to explosion group IIB3 (NEC group C MESG ≥0.65 mm)
  • Minimum pressure drop of the FLAMEFILTER
  • Freeze protection at sub-zero conditions
  • Self draining function for condensate
  • Liquid column height is monitored by level indicators
  • Easy maintenance through hinged vent cap
The deflagration-proof UB/VF type Protego diaphragm valve is a state-of-the-art vacuum relief valve combining the function of a dynamic and static flame arrester. 

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

The valve offers reliable protection against vacuum build up, prevents the inbreathing of air and product losses almost up to the set vacuum and protects against atmospheric deflagration. 

The Protego UB/VF diaphragm valve has proven its performance over many years in a great variety of severe applications in the petrochemical and chemical industry. 

Worldwide it is the only vent which functions in services such as styrene and acrylics. 

The set vacuum is adjusted with a freeze resistant water-glycol mixture, which assures safe operation under extreme cold weather conditions. 

The Protego UB/VF valve is available for substances from explosion group IIB3 (NEC group C MESG ≥0.65 mm).
Features
  • High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
  • Set vacuum close to the design vacuum enables optimum pressure maintenance in the system
  • High flow capacity
  • Can be used as a protective system according to ATEX in areas subject to an explosion hazard
  • Protection against atmospheric deflagrations for products up to explosion group IIB3 (NEC group C MESG ≥0.65 mm)
  • Minimum pressure drop of the FLAMEFILTER
  • Freeze protection at sub-zero conditions
  • Self draining function for condensate
  • Liquid column height is monitored by level indicators
  • Easy maintenance through hinged vent cap
Close

Displaying prices & availability for Ohio, United States in USD. Change location.

Models matching criteria: 2
UB/VF
  • Model - Vacuum Diaphragm Valve, Basic Design
Out of Stock
UB/VF-H
  • Model - Vacuum Diaphragm Valve with Heating Coil
Out of Stock
Close
Close

Specifications

Brand

Approvals & Certifications

  • ATEX
  • CEN
  • IEC
  • NEC Group C MESG ≥ 0.65 mm

Approvals & Certifications

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

Diaphragm Material

  • FEP
  • FPM

Enclosure Finish

  • ECTFE

Enclosure, Body Material

  • Stainless Steel
  • Steel

Environmental Protection

  • Explosion-proof Group 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

  • FPM
  • PTFE

Materials of Construction

  • Valve Top, Heating Coil, Flamefilter Cage, Spacer: Stainless Steel

Operating Temperature

  • 0° to 60° C (32° to 140° F)

Pressure Range

  • psi: -0.507 to -0.050 (kPa: -3.5 to -0.35, Mbar: -35 to -3.5)

Process Temperature

  • Maximum

Seat / Seal Material

  • Valve Seat: Stainless Steel
Close