Search QuEST-Login Login About PROTEGO® Contact PROTEGO® - Braunschweiger Flammenfilter GmbH Career English PROTEGO® › Products › Valves Print page PROTEGO® Valves Choose the right Valve here: Catalogue 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. Operation of the valve under pressure in the tank Operation of the valve under vacuum in the tank Our product range includes: 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 Read more on "Safe Protection of Storage Tanks with Pressure / Vacuum Valves and Flame Arresters" Special Features and advantages of PROTEGO® Valves 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 Pressure and Vacuum Relief Valves 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 More about PROTEGO® Valve Pallets Vapor Savings 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%: PROTEGO® Diaphragm Valves 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. Video "PROTEGO® UB/SF deflagration- and endurance burning-proof": watch video Video"PROTEGO® UB/SF Frost-Proof Pressure and Vacuum Diaphragm Valve": watch video 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 PROTEGO® Pilot Operated Relief Valves 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 PROTEGO® Emergency Pressure Relief Valves 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 PROTEGO® Leak Rates The maximum permissible leak rates for PROTEGO® valves are listed in the table. We differentiate between the standard leak rate A and the special leak rates B and C. The latter require a valve pallet in metal-to-metal contact. The special leak rate C can be applied to valves having a minimum set pressure of 50 mbar or a set vacuum of 14 mbar. The standard leak rate A and the special leak rate B apply by analogy to below-atmospheric pressure uses. Liquid-loaded diaphragm valves are principally tested using the special leak rate B. Special Valve Solutions Alcohol Applications PROTEGO® Valves with integrated Flame Arrester Styrene Applications PROTEGO® UB/SF - Diaphragm Valve with integrated Flame Arrester Acrylate Applications PROTEGO® UB/SF - Diaphragm Valve with integrated Flame Arrester Valves - Catalogue Show all products Pressure and Vacuum Relief Valves, end-of-line Pressure and Vacuum Relief Valves, in-line Pressure and Vacuum Relief Valves with Flame Arrester, end-of-line 57 Products Filter list by Search 1 Pressure and Vacuum Relief Valves, end-of-line 1.1 Pressure Relief Valves, weight pallet type P/EL pressure range: 3.5 up to 210 mbar Show details Download P/ELR pressure range: 3.5 up to 210 mbar Show details Download SD/BS-H pressure range: 5 up to 210 mbar Show details Download D/SVL pressure range: 2 up to 60 mbar Show details Download ER-V-LP pressure range: 3.4 up to 15 mbar Show details Download ER/V pressure range: 5 up to 40 mbar Show details Download ER/VH pressure range: 25 up to 60 mbar Show details Download ER/V-F pressure range: 60 up to 500 mbar Show details Download D/KSM pressure range: 5 up to 100 mbar Show details Download 1.2 Vacuum Relief Valves, weight pallet type SV/T-0-H vacuum range: -7 up to -50 mbar Show details Download SV/E-1-0 vacuum range: -2 up to -60 mbar Show details Download V/KSM vacuum range: -5 up to -100 mbar Show details Download 1.3 Pressure and Vacuum Relief Valves, weight pallet type PV/EL pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -35 mbar Show details Download PV/ELR pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -50 mbar Show details Download VD/SV pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar Show details Download VD/SV-PA(L) pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar Show details Download VD/KSM pressure range: 5 up to 100 mbar vacuum range: -5 up to -100 mbar Show details Download VD/KSM-PA pressure range: 5 up to 100 mbar vacuum range: -5 up to -100 mbar Show details Download 2 Pressure and Vacuum Relief Valves, in-line 2.1 Pressure or Vacuum Relief Valves DZ/E pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar Show details Download DZ/E-F pressure range: 60 up to 500 mbar vacuum range: -60 up to -500 mbar Show details Download DZ/EA pressure range: 5 up to 50 mbar vacuum range: -5 up to -50 mbar Show details Download DZ/EA-F pressure range: 60 up to 500 mbar vacuum range: -60 up to -500 mbar Show details Download DZ/T pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar Show details Download DZ/T-F pressure range: 60 up to 500 mbar vacuum range: -60 up to -500 mbar Show details Download R/KSM pressure range: 5 up to 100 mbar vacuum range: -5 up to -100 mbar Show details Download 2.2 Pressure and Vacuum Relief Valves DV/ZT pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar Show details Download DV/ZT-F pressure range: 60 up to 500 mbar vacuum range: -3.5 up to -50 mbar Show details Download DV/ZU pressure range: 2 up to 60 mbar vacuum range: -3.5 up to -50 mbar Show details Download DV/ZU-F pressure range: 60 up to 500 mbar vacuum range: -3.5 up to -50 mbar Show details Download DV/ZW pressure range: 2 up to 60 mbar vacuum range: -3.5 up to -50 mbar Show details Download DV/ZW-F pressure range: 60 up to 500 mbar vacuum range: -3.5 up to -50 mbar Show details Download 2.3 Blanketing Valve ZM-R pressure range: up to 500 mbar vacuum range: up to -200 mbar Show details Download 3 Pressure and Vacuum Relief Valves with Flame Arrester, end-of-line 3.1 Pressure Relief Valves, pallet type P/EBR pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 Show details Download P/EB pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA Show details Download P/EB-E pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 Show details Download P/EBR-E pressure range: 3.5 up to 210 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 Show details Download D-SVL-EB-IIA pressure range: 2 up to 60 mbar Explosion Group: IIA1 , D / IIA Show details Download BE/HR-D pressure range: 2 up to 35 mbar Explosion Group: IIA1 , D / IIA Show details Download 3.2 Vacuum Relief Valves, pallet type SV/E 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 3.3 Pressure/Vacuum Relief Valves, pallet type PV/EBR-E-IIB3 pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -50 mbar Explosion Group: IIA1 , D / IIA , C / IIB3 Show details Download PV/EB pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 , D / IIA Show details Download PV/EB-E pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 Show details Download PV/EBR 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 Show details Download PV/EBR-E pressure range: 2 up to 210 mbar vacuum range: -3.5 up to -50 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 Show details Download VD/SV-AD and VD/SV-ADL 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 Download VD/SV-HR 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 Download VD/SV-HRL pressure range: 3.5 up to 35 mbar vacuum range: -2 up to -35 mbar Explosion Group: IIA1 , D / IIA Show details Download VD-SV-EB pressure range: 2 up to 60 mbar vacuum range: -2 up to -60 mbar Explosion Group: IIA1 , D / IIA Show details Download VD/TS 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 3.4 Pressure/Vacuum Relief Valves, Diaphragm Valves UB/SF 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 Show details Download UB/SF-IIA1 pressure range: 3.5 up to 150 mbar vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 Show details Download UB/DF pressure range: 3.5 up to 140 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 Show details Download UB/VF vacuum range: -3.5 up to -35 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 Show details Download 3.5 Pressure Relief Valves, High Velocity Valves DE/S-IIB pressure range: 100 up to 500 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 , B / IIB Show details Download DE/S-IIB3 pressure range: 100 up to 500 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 Show details Download DE/S-MK VI - IIB3 pressure range: 60 up to 350 mbar Explosion Group: IIA1 , D / IIA , C / IIB1 , C / IIB2 , C / IIB3 Show details Download DE/S-MK VI - IIC 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 PROTEGO® Headquarters Braunschweiger Flammenfilter GmbH PROTEGO® - for safety and environment Industriestr. 11 38110 Braunschweig Deutschland Phone: +49 (0) 5307 / 809-0 Fax: +49 (0) 5307 / 7824 E-Mail: office@protego.com PROTEGO® subsidiaries Brazil, China, France, India, Middle East, Austria, Russia, Spain, Switzerland, UK, Hungary, USA Imprint Terms Privacy Statement Sitemap Conditions of Purchase