Valve Technology
Closed vessels or tanks filled with liquids must have an opening through which the accumulated pressure can be released and vacuum in the tank or vessel compensated. For that purpose PROTEGO® Overpressure and Vacuum Relief Valves are provided with weight-loaded or spring-loaded valve discs. In the case of overpressure in the tank, the overpressure valve disc guided in the housing is lifted and releases the volume flow into the atmosphere. When there is a vacuum in the tank, the overpressure of the atmosphere lifts the vacuum disc and the tank is vented.
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Operation of the valve under pressure in the tank
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Operation of the valve under vacuum in the tank
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- Overpressure and Vacuum Relief Valves (end-of-line / in-line)
- Pilot-operated Valves
- Emergency Relief Valves
- Overpressure and Vacuum Relief Valves with integrated Flame Arrester Unit (end-of-line)
- Diaphragm Valves
- Overpressure and Vacuum Relief Valves (end-of-line / in-line)
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- High flow capacity
- PROTEGO® Valves open later and close earlier ensuring optimized pressure management and saving of inert gases
- Reduction of product losses
- Improved tightness
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PROTEGO® pressure and vacuum relief valves with full-lift pallet discharge the flow within 10% overpressure from the set pressure to a fully opened valve (full-lift).
Unless otherwise agreed, all PROTEGO® Valves are designed to our 10% technology.
Advantages of the PROTEGO® 10% technology:
- Maintenance of pressure up to just below the maximum permissible (tank) pressure
- Minimization of product losses
- Reduction of emissions
Opening characteristics of valves with different overpressure levels
Discharge with full-lift pallet
Closed
Discharge with full-lift
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Vapor saving potential for 10% full lift type valve compared with 100% overpressure valve. Using a full lift type technology valve (valve requiring only 10% overpressure to reach full lift and provide full performance) can result in additional 44%:
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PROTEGO® Diaphragm Valves are used at weather-related low temperatures and in sticky, polymerizing media because of their flexible diaphragms. They are the only valves worldwide which are frost-proof down to temperatures of -40°C.
Benefits of PROTEGO® Diaphragm Valves
- high performance seal reducing product loss below EPA’s 500ppm rule preventing environmental pollution
- set pressure close to opening pressure enables optimum pressure maintenance in the system
- liquid column height is monitored by level indicators (see picture on the right)
- freeze protection at sub-zero conditions (see picture 1 on the back)
- hinged design – maintenance friendly (see picture 2 on the back)
- self draining function for condensate
- particularly suitable for problematic products such as monomers,polymerizing media and vapours with a tendency to condensate, etc.
Operation - Inbreathing
Operation - Outbreathing
Diaphragm Valve PROTEGO® UB/SF
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PROTEGO® Pilot Operated Relief Valves discharge the volume flow without requiring pressure increase. Pilot valves are generally used wherever the valve must be very tightly sealed up to the set pressure. The pilot valves are produced according to API 2000 and have an optimized volume flow.
Advantages of PROTEGO® PM-HF, Pressure/Vacuum Pilot-Operated Relief Valve
- Materials: Stainless steel and aluminum
- Size: DN 3”/4” to DN 12”/16”
- Temperature range: -200°C to +60°C
- Set pressure range: +10 to +1034 mbar
- Set vacuum range: -2,2 to -8,1 mbar
- Conformity per API 7th Ed. and ISO 28300
- Cryogenic Functional Test (per ISO 21013-4)
- Blow down < 7%
- Extremely tight valve seat to valve pallet seal
Pilot Operated Valve PROTEGO® PM-HF
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PROTEGO® Emergency Pressure Relief Valves must be used when extremely high venting rates are required due to fire on the outer surface.
Tank protection by PROTEGO® VD/SV-PA Pressure and Vacuum Relief Valve, PROTEGO® ZM‑R Nitrogen Control Valve and PROTEGO® ER-V-LP Emergency Relief Valve
Emergency Pressure Relief Valve
Valves - Catalogue
| 2.1 Pressure and Vacuum Relief Valves, end-of-line | ||
| 2.1.1 Pressure Relief Valves, weight pallet type | ||
| P/EL | P/ELR | SD/BS-H |
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| pressure range: 3.5 up to 210 mbar | pressure range: 3.5 up to 210 mbar | pressure range: 5 up to 210 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| D/SVL | ER-V-LP | ER/V |
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| pressure range: 2 up to 60 mbar | pressure range: 3.4 up to 15 mbar | pressure range: 5 up to 40 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| ER/VH | ER/V-F | D/KSM |
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| pressure range: 25 up to 60 mbar | pressure range: 60 up to 500 mbar | pressure range: 5 up to 100 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| 2.1.2 Vacuum Relief Valves, weight pallet type | ||
| SV/T-0-H | SV/E-1-0 | V/KSM |
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| vacuum range: -7 up to -50 mbar | vacuum range: -2 up to -60 mbar | vacuum range: -5 up to -100 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| 2.1.3 Pressure and Vacuum Relief Valves, weight pallet type | ||
| PV/EL | PV/ELR | VD/SV |
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| pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -35 mbar | pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -50 mbar | pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| VD/SV-PA(L) | VD/KSM | VD/KSM-PA |
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| pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar | pressure range: 5 up to 100 mbar vacuum range: -5 up to -100 mbar | pressure range: 5 up to 100 mbar vacuum range: -5 up to -100 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| 2.2 Pressure and Vacuum Relief Valves, in-line | ||
| 2.2.1 Pressure or Vacuum Relief Valves | ||
| DZ/E | DZ/E-F | DZ/EA |
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| pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar | pressure range: 60 up to 500 mbar vacuum range: -60 up to -500 mbar | pressure range: 5 up to 50 mbar vacuum range: -5 up to -50 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| DZ/EA-F | DZ/T | DZ/T-F |
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| pressure range: 60 up to 500 mbar vacuum range: -60 up to -500 mbar | pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar | pressure range: 60 up to 500 mbar vacuum range: -60 up to -500 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| R/KSM | ||
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| pressure range: 5 up to 100 mbar vacuum range: -5 up to -100 mbar | ||
| Show details | ||
| Download | ||
| 2.2.2 Pressure and Vacuum Relief Valves | ||
| DV/ZT | DV/ZT-F | DV/ZU |
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| pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar | pressure range: 60 up to 500 mbar vacuum range: -3.5 up to -50 mbar | pressure range: 2 up to 60 mbar vacuum range: -3.5 up to -50 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| DV/ZU-F | DV/ZW | DV/ZW-F |
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| pressure range: 60 up to 500 mbar vacuum range: -3.5 up to -50 mbar | pressure range: 2 up to 60 mbar vacuum range: -3.5 up to -50 mbar | pressure range: 60 up to 500 mbar vacuum range: -3.5 up to -50 mbar |
| Show details | Show details | Show details |
| Download | Download | Download |
| 2.2.3 Blanketing Valve | ||
| ZM-R | ||
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| pressure range: up to 500 mbar vacuum range: up to -200 mbar | ||
| Show details | ||
| Download | ||
| 2.3 Pressure and Vacuum Relief Valves with Flame Arrester, end-of-line | ||
| 2.3.1 Pressure Relief Valves, pallet type | ||
| P/EBR | P/EB | P/EB-E |
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| pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 | pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA | pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 |
| Show details | Show details | Show details |
| Download | Download | Download |
| P/EBR-E | D-SVL-EB-IIA | BE/HR-D |
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| pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 | pressure range: 2 up to 60 mbar Explosion Group: IIA1 , D / IIA | pressure range: 2 up to 35 mbar Explosion Group: IIA1 , D / IIA |
| Show details | Show details | Show details |
| Download | Download | Download |
| 2.3.2 Vacuum Relief Valves, pallet type | ||
| SV/E | ||
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| vacuum range: -2 up to -60 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 , B / IIB , B / IIC | ||
| Show details | ||
| Download | ||
| 2.3.3 Pressure/Vacuum Relief Valves, pallet type | ||
| PV/EBR-E-IIB3 | PV/EB | PV/EB-E |
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| pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -50 mbar Explosion Group: IIA1 , D / IIA , C / IIB3 | pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 , D / IIA | pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 |
| Show details | Show details | Show details |
| Download | Download | Download |
| PV/EBR | PV/EBR-E | VD/SV-AD and VD/SV-ADL |
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| pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -50 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 | pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -50 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 | pressure range: -3.5 up to 35 mbar vacuum range: -2 up to -35 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 |
| Show details | Show details | Show details |
| Download | Download | Download |
| VD/SV-HR | VD/SV-HRL | VD-SV-EB |
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| pressure range: 3.5 up to 35 mbar vacuum range: -2 up to -35 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 | pressure range: 3.5 up to 35 mbar vacuum range: -2 up to -35 mbar Explosion Group: IIA1 , D / IIA | pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar Explosion Group: IIA1 , D / IIA |
| Show details | Show details | Show details |
| Download | Download | Download |
| VD/TS | ||
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| pressure range: 3.5 up to 50 mbar vacuum range: -2 up to -25 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 | ||
| Show details | ||
| Download | ||
| 2.3.4 Pressure/Vacuum Relief Valves, Diaphragm Valves | ||
| UB/SF | UB/SF-IIA1 | UB/DF |
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| pressure range: 3.5 up to 140 mbar vacuum range: -3.5 up to -35 mbar Explosion Group: D / IIA , C / IIB1 , C / IIB2 , C / IIB3 | pressure range: 3.5 up to 150 mbar vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 | pressure range: 3.5 up to 140 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 |
| Show details | Show details | Show details |
| Download | Download | Download |
| UB/VF | ||
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| vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 | ||
| Show details | ||
| Download | ||
| 2.3.5 Pressure Relief Valves, High Velocity Valves | ||
| DE/S-IIB | DE/S-IIB3 | DE/S-MK VI - IIB3 |
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| pressure range: 100 up to 500 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 , B / IIB | pressure range: 100 up to 500 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 | pressure range: 60 up to 350 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 |
| Show details | Show details | Show details |
| Download | Download | Download |
| DE/S-MK VI - IIC | ||
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| pressure range: 60 up to 350 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 , B / IIB , B / IIC | ||
| Show details | ||
| Download | ||
