ER/V
Válvula de alívio de pressão
Features
10% Technology
for minimum pressure increase up to full
lift
Lift
Lift is the actual travel of the valve pallet from the main valve out of the closed position.
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
Flow Capacity
optimized flow capacity
Used in Explosion Hazardous Areas
Sturdy Housing Design
(PN 10 and PN 16)
Secured Housing Cover
with lever and lockable weight load
API Tanks
best technology for API tanks
Function and Description
Highly Developed Pressure Relief Valve
The ER/V type PROTEGO® valve is a highly developed emergency
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.
with high flow capacity. 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 emergency pressure relief for storage tanks, containers, silos, and process engineering
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.
; it 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 impermissible product vapor loss close to the set pressure. It is designed to relief particularly large amounts to prevent the
vessel
Vessel
Container or structural envelope in which materials are processed, treated or stored.
from rupturing in an emergency case.
Full Lift Technology
The device will start to open as soon as the set pressure is reached and only requires 10% overpressure to full lift. Continuous investments into research and development have allowed PROTEGO® to develop a low pressure valve which has the same opening characteristic as a high pressure safety relief valve. This “full lift type” technology allows the valve to be set just 10% below the maximum allowable working pressure of the tank and still safely vent the required mass flow.
Advanced Manufacturing Technology
Due to the highly developed manufacturing technology, 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 superior to the conventional standard. This feature is achieved by valve seats made of stainless steel with an inserted
O-ring
O-ring
O-rings are ring-shaped gaskets with a round, o-shaped cross section
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.
, a precisely lapped valve pallet, as well as a reinforced housing design. After the excess pressure is relieved, the valve reseats and provides a tight seal again.
Product Data and Features
Tabela de dimensões
Para escolher o diâmetro nominal (DN), veja o diagrama de vazão da página seguinte
| DN | 200 / 8" | 250 / 10" | 300 / 12" | 350 / 14" | 400 / 16" | 450 / 18" | 500 / 20" | 600 / 24" | 700 / 28" |
| a | 305 | 375 | 425 | 445 | 495 | 545 | 615 | 715 | 795 |
| b | conforme o ajuste da pressão |
Dimensões em mm
Seleção do material
| Execução | A | B | C | D |
| Corpo | Aço | Aço | Aço inoxidável | Aço inoxidável |
| Sedes de válvulas | Aço inoxidável | Aço inoxidável | Aço inoxidável | Aço inoxidável |
| Obturador da válvula | Alumínio* | Aço-Aço inoxidável* | Alumínio* | Aço inoxidável* |
| Vedação | FPM | FPM | FPM | FPM |
* dependendo da pressão de ajuste
Materiais 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. Pressões de ajuste mais altas são realizadas geralmente com alavanca (veja ER/VH) ou com válvula calibrada por mola (veja ER/V-F).Válvula de alívio de pressão na versão básicaER/V
Outros dispositivos especiais sob solicitação
Ajustes de pressão
| DN 200 a DN 350 | +5 mbar | +40 mbar |
| +2 inch W.C.J | +16 inch W.C. | |
| DN 400 a DN 700 | +5 mbar | +25 mbar |
| +2 inch W.C.J | +10 inch W.C. |
Ajustes de pressões mais altos, veja tipo ER/VH e ER/V-F.
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.
Applications