P/EB-E
Válvula de alívio de pressãoà prova de deflagração e combustão contínua
Features
Extreme Tightness
resulting in lowest possible
product
Product
Includes equipment, protective systems, devices, components and combinations of these.
losses and reduced environmental pollution
Optimal Pressure Maintenance
set pressure
Set pressure
Set pressure is the gauge pressure at the device inlet at which the relief device is set to start opening under service conditions.
close to opening pressure for optimum pressure
maintenance
Maintenance
Combination of all technical and administrative actions, including supervision actions, intended to maintain or restore a unit in working order.
in the system
Guided Valve Pallet
valve pallet
Valve pallet
Valve pallet is the generic term for the assembly that rests on the valve seat.
is guided inside the
housing
Housing
A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content.
to protect against harsh weather conditions
Protective System According to ATEX
can be used as a
protective system
Protective system
All devices, with the exception of components (see A.6) of the equipment, intended to immediately stop explosions and/or to limit the area affected by an explosion and separately placed on the market as autonomous systems.
in areas with potentially
explosive atmosphere
Explosive atmosphere
A mixture of air and flammable substance in the form of gases,
vapors, mists or dusts under atmospheric conditions in which, after ignition, spreads to the entire unburned mixture.
in accordance with ATEX
Protected for Alcohol/Air Mixtures
protected against
deflagration
Deflagration
Explosion propagating at subsonic velocity (EN 1127-1:1997).
and
endurance burning
Endurance burning
Stabilized burning for an unlimited time.
of alcohol/air mixtures from
explosion
Explosion
Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously.
group IIB1 and for products up to explosion group IIB3 (NEC group C MESG ≥ 0.65 mm)
Safety Against Endurance Burning
Protection against Atmospheric Deflagration and Endurance Burning
Intergrated Flame Arrester
integrated
PROTEGO® flame arrester unit
PROTEGO® flame arrester unit
The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation.
saves space and weight and reduces costs
Modular Design
allows replacement and cleaning of single FLAMEFILTER®
Function and Description
Highly Developed Pressure Relief Valve
The deflagration-proof and endurance burning-proof P/EB-E type PROTEGO® valve is a highly developed
pressure relief valve
Pressure-relief valve
Valve designed to open and relieve excess pressure and to reclose and prevent the further flow of fluid after normal conditions have been restored.
for large flows with an integrated
flame arrester unit
Flame arrester unit
Flame arrester casing with FLAMEFILTER® set.
that is specifically designed for use in ethanol production, processing, and storage. It is primarily used as a
device
Device
A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow.
for
flame transmission-proof
Flame transmission-proof
Characteristic of a device to avoid flashback.
out-breathing on tanks, containers, and process
equipment
Equipment
Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion.
. The valve offers reliable protection against
overpressure
Overpressure
Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure.
and prevents product losses almost up to the set pressure, while at the same time protecting against atmospheric deflagration and endurance burning if
stabilized burning
Stabilized burning
Steady burning of a flame stabilized at, or close to the flame arrester element.
occurs. The PROTEGO® flame arrester unit is designed to achieve minimum pressure drop with maximum safety. The P/EB-E valve is available for substances of explosion group IIB1 (MESG ≥ 0.85 mm) and provides specific protection against deflagration and endurance burning of alcohol/air mixtures (such as ethanol/air).
Advanced manufacturing technology
The valve functions proportional, so the set pressures should be selected in relation to the proportional behavior (such as a 10%, 40%, or 100% overpressure from the set pressure to the
relieving pressure
Relieving pressure
The relieving pressure is the vacuum or overpressure at which the valve reaches the lift required for the mass flow to be discharged.
at which the required flow performance is reached). The
tank pressure
Tank pressure
Tank pressure is the pressure within a tank.
is maintained up to the set pressure with a tightness that is far above the usual standards due to our state-of-the-art manufacturing. 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
Seal
A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements.
(2), in conjunction with high quality FEP
diaphragm
Diaphragm
A diaphragm is a thin layer of material, which has a large surface area.
. The valve pallets are also available with a PTFE seal to prevent the valve pallets from sticking when sticky substances are used and to enable the use of corrosive fluids. After the overpressure is released, the valve re-seats and provides a tight seal.
Many Individual Certifications
If the set pressure is exceeded, explosive gas/product vapor/air mixtures are released into 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
Flashback
Phenomenon occurring in a flammable mixture of air and gas when the local velocity of the combustible mixture becomes less than the flame velocity, causing the flame to travel back to the point of mixture.
as a result of endurance burning. The valve is protected and also fulfils its function under these severe conditions. The
spring
Spring
A spring is a spiral of wire which returns to its original shape after it is pressed or pulled.
-loaded
weather hood
Weather hood
A weather hood is a cover to protect the internal components of a device from environmental influences.
pens as soon as the
melting element
Melting element
The melting element is a component that consists of a housing with a lower and upper part.
(4) melts.
The valve can be used up to an
operating temperature
Operating temperature
Temperature reached when the equipment is operating under design conditions.
of up to +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.
Product Data and Features
Tabela de dimensões
Para escolher o diâmetro nominal (DN), veja o diagrama de vazão da página seguinte
| DN | 50 / 2" | 50 / 2" | 80 / 3" | 80 / 3" |
| Pressão | ≤ +80 mbar | > +80 mbar | ≤ +80 mbar | > +80 mbar |
| a | 218 | 218 | 218 | 218 |
| b | 288 | 453 | 290 | 455 |
Dimensões em mm
Dimensões para a válvula de alívio de pressão com camisa de aquecimento sob solicitação
Seleção do grupo de explosão
| MESG | Gr. expl. (IEC / CEN) | Grupo gás (NEC) |
| ≥ 0,85 mm | IIB1 | – |
Aprovações especiais sob solicitação
Tipo de conexão flangeada
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
Outras conexões sob solicitação
Versão e especificação
O obturador da válvula é calibrado por peso. Com pressões de ajuste >80 mbar se utiliza um modelo estendido.Estão disponíveis duas versões:
Válvula de alívio de pressão na versão básicaP/EB - E - –
Válvula de alívio de pressão com camisa de
aquecimento (temperatura máx. do meio de aquecimento +85°C)P/EB - E - H
Outros dispositivos especiais sob solicitação
Ajustes de pressão
| Pressão: | +3.5 mbar | +210 mbar |
| +1.4 inch W.C. | +84 inch W.C. |
Ajustes de pressões maiores sob solicitação
Seleção do material do corpo
| Execução | B | C |
| Corpo | Aço | Aço inoxidável |
| Camisa de aquecimento (P / EB-E-H-...) | Aço | Aço inoxidável |
| Sede de válvula | Aço inoxidável | Aço inoxidável |
| Tampa | Aço | Aço inoxidável |
Materiais especiais sob solicitação
Combinações de material do conjunto abafador de chamas
| Execução | A |
| Armação do FLAMEFILTER® | Aço inoxidável |
| FLAMEFILTER® | Aço inoxidável |
| Espaçadores | Aço inoxidável |
Materiais especiais sob solicitação
Seleção de material do obturador da válvula
| Execução | A | B | C | D |
| Faixa de pressão [mbar] | +3,5 até +5,0 | >+5,0 até +14 | >+14 até +210 | >+14 até +210 |
| Obturador da válvula | Alumínio | Aço inoxidável | Aço inoxidável | Aço inoxidável |
| Vedação | FEP | FEP | metálica | PTFE |
Materiais especiais e ajustes de pressão mais altos sob solicitação
Diagrama de vazão
Este diagrama de vazão foi determinado em uma bancada de medição de vazão calibrada e certificada pela TÜV. A vazão V em m³/h se refere ao estado técnico padrão de ar, conforme ISO 6358 (20°C, 1bar). Para conversão em outras densidades e temperaturas, veja o cap. 1: Bases técnicas.
Detalhe X
Detalhe X
Applications