P/EBR-E-IIB3
Pressure Relief Valve deflagration- and endurance burning-proof
Características
Función y descripción
Combined Pressure and Vacuum Relief Valve
The Deflagration-Proof and Endurance-Burning-Proof PV/EBR-E type PROTEGO® valve is a highly developed combined pressure/ vacuum relief valve for high fl ow capacities with an integrated Flame Arrester that is specially used for applications handling ethanol. It is primarily used as a device for flame transmission proof 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 also protects against atmospheric defl agration as well as endurance burning if stabilized burning occurs.
For Explosion Group IIB3
The PROTEGO® Flame Arrester Unit is designed to achieve minimum pressure drop with maximum safety. The PROTEGO® PV/EBR-E valve is available for substances of explosion group IIB3 (MESG ≥ 0,65 mm) and provides specific protection against defl agration and endurance burning of alcohol/air mixtures (such as Ethanol/air). The valve functions proportional, so the set pressures should be selected in relation to the proportional behaviour (such as a 10%, 40%, or 100% overpressure from the set pressure to the relieving pressure at which the required flow performance is reached).
Advanced Manufacturing Technology
The tank pressure is maintained up to the set pressure with a tightness that is far superior to the conventional standard due to our state of the art manufacturing technology. This feature is ensured by the valve seats made of high quality stainless steel and with individually lapped valve pallets (1) or with an air cushion seal (2) in conjunction with high quality FEP diaphragm. The valve pallets are also available with a PTFE seal to prevent the valve pallets from sticking when sticky products are used and to enable the use corrosive fluids. After the excess pressure is discharged, the valve reseats and provides a tight seal.
Main Component – PROTEGO® Flame Arrester Unit
If the set pressure is exceeded, explosive gas/product-vapour air mixtures are released to the atmosphere. If this mixture ignites, the integrated PROTEGO® Flame Arrester Unit (3) prevents flame transmission into the tank. If additional mixture continues to flow and stabilized burning occurs, the integrated Flame Arrester Unit prevents flashback as a result from endurance burning. The valve is protected and also fulfils its function under this severe service conditions. The spring loaded weather hood opens as soon as the fusible element (4) melts.
Many Individual Certifications
The valve can be used up to an operating temperature of +60°C / 140°F and meets the requirements of European Tank Design Standard EN 14015 – Appendix L and ISO 28300 (API 2000). EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Dimensiones
To select the nominal size (DN), please use the flow capacity chart on the following page
| DN | 80 / 3" | 80 / 3" | 100 / 4" | 100 / 4" |
| Set pressure | ≤ +80 mbar | > +80 mbar | ≤ +80 mbar | > +80 mbar |
| Set pressure | ≤ +32.1 inch W.C. | > +32.1 inch W.C. | ≤ +32.1 inch W.C. | > +32.1 inch W.C. |
| a | 353 | 353 | 353 | 353 |
| b | 345 | 505 | 345 | 505 |
Dimensiones en mm / pulgadas
Dimensions for pressure relief valve with heating jacket upon request
Selección de materiales para la vivienda
| Design | B | C |
| Housing | Steel | Stainless Steel |
| Heating jacket (P / EBR-E-H-...) | Steel | Stainless Steel |
| Valve seat | Stainless Steel | Stainless Steel |
| Weather hood | Steel | Stainless Steel |
Special materials upon request
Combinación de materiales para la unidad apagallamas
| Design | A |
| FLAMEFILTER® cage | Stainless Steel |
| FLAMEFILTER® | Stainless Steel |
| Spacer | Stainless Steel |
Special materials upon request
Material selection for valve pallet
| Design | A | B | C | D |
| Pressure range [mbar] [inch W.C.] | +3.5 up to +5.0 +1.4 up to +2.0 | >+5.0 up to +14 >+2.0 up to +5.6 | >+14 up to +210 >+5.6 up to +84 | >+14 up to +210 >+5.6 up to +84 |
| Valve pallet | Aluminium | Stainless Steel | Stainless Steel | Stainless Steel |
| Sealing | FEP | FEP | Metal to Metal | PTFE |
Special materials and higher pressure settings upon request
Selección del grupo de explosión
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Tipo de bridas de conexión
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other types upon request
Modelo y especificación
The valve disc is weight-loaded. At set pressure >80 mbar (32.1 inch W.C.), an elongated design is usedThere are two different designs:
Additional special devices available upon request
Settings
| Pressure: | +3.5 mbar | +210 mbar |
| +1.4 inch W.C. | +84 inch W.C. |
Higher pressure settings upon request.
Diagrama de flujo volumétrico
Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.
