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UB/SF-IIA1 Pressure or Vacuum Diaphragm Valve
Brand: PROTEGOThe deflagration-and endurance burning-proof Protego UB/SF-IIA1 type diaphragm valve is a state of the art pressure-and vacuum-relief valve combining the function of a dynamic flame arrester.
It is primarily used within biogas plants 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 protects against atmospheric deflagration and endurance burning if stabilized burning occurs.
The set pressure is adjusted with a freeze resistant water glycol mixture, which assures safe operation under extreme cold weather conditions.
The liquid is capsuled and is not discharged or diluted during operation.
The valve can also be operated at temperatures lower than 0° C (32° F) without ice constricting the function of the valve.
Features- High performance seal reducing product loss below EPA's 500 ppm rule preventing environmental pollution
- Set pressure close to opening pressure enables optimum pressure maintenance in the system
- Can be used as a protective system according to ATEX directive in areas subject to an explosion hazard
- Protection against atmospheric deflagrations and endurance burning for products up to explosion group IIA1
- Flame-transmission-proof venting of the pressure chamber
- 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 modular design enables individual diaphragm to be replaced
- Can be applied in biogas plants due to internal coating
- Permanent refilling of the frost-proof liquid is not necessary, liquid remains within the valve chambers
- Spray nozzle for internal cleaning and avoidance of foam upon request
Specifications
Brand
Approvals & Certifications
- EN 14015, EN 16852
- ISO 6358, ISO 16016
- TÜV (Technischer Uberwachungsverein)
Approvals & Certifications
- ATEX
- CEN
- IEC
Diaphragm Material
- FPM
Enclosure Finish
- Polymer Coating
Enclosure, Body Material
- Steel
Environmental Protection
- Explosion-proof Group IIA1
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
Materials of Construction
- Valve Top, Heating Coil: Stainless Steel
Operating Temperature
- 0° to 60° C (32° to 140° F)
Pressure Range
- psi: 0.050 to 2.176 (kPa: 0.35 to 15, Mbar, 3.5 to 150)
- psi: -0.507 to -0.050 (kPa: -3.5 to -0.35, Mbar: -35 to -3.5) - Vacuum
Process Temperature
- Maximum
Seat / Seal Material
- Valve Seat: Stainless Steel