Features
10% Technology
for minimum pressure increase up to full lift
Extreme Tightness
resulting in lowest possible product losses and reduced environmental pollution
Optimal Pressure Maintenance
set pressure close to opening pressure for optimum pressure maintenance in the system
Guided Valve Pallet
valve pallet is guided inside the housing to protect against harsh weather conditions
Flow Capacity
optimized flow capacity
Used in Explosion Hazardous Areas
can be 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
Product
Includes equipment, protective systems, devices, components and combinations of these.
vapor loss close to the
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.
. 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
Lift
Lift is the actual travel of the valve pallet from the main valve out of the closed position.
. 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
Valve pallet
Valve pallet is the generic term for the assembly that rests on the valve seat.
, as well as a reinforced
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.
design. After the excess pressure is relieved, the valve reseats and provides a tight seal again.
Product Data
Dimensions
To select the nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), use the flow capacity chart on the following page
| DN | 200 / 8" | 250 / 10" | 300 / 12" | 350 / 14" | 400 / 16" | 450 / 18" | 500 / 20" | 600 / 24" | 700 / 28" |
| a | 305 / 12.01 | 375 / 14.76 | 425 / 16.73 | 445 / 17.52 | 495 / 19.49 | 545 / 21.46 | 615 / 24.21 | 715 / 28.15 | 795 / 31.30 |
| b | depending on pressure setting |
Dimensions in mm / inches
Material selection
| Design | A | B | C | D |
| Housing | Steel | Steel | Stainless Steel | Stainless Steel |
| Valve seat Valve seat The valve seat is a component on which the valve pallet rests when the valve is closed. | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| Valve pallet | Aluminium* | Steel-Stainless Steel* | Aluminium* | Stainless Steel* |
| Sealing | FPM | FPM | FPM | FPM |
* depending on pressure setting
Special materials upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other types upon request
Design Types and Specifications
The valve pallet is weight-loaded. Higher pressures are achieved with levers (see ER/VH) or with spring Spring A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. -loading (see ER/V-F).Pressure valve in basic designER/V
Additional special devices available upon request.
Settings
| DN 200 to DN 350 | +5 mbar | +40 mbar |
| +2 inch W.C.J | +16 inch W.C. | |
| DN 400 to DN 700 | +5 mbar | +25 mbar |
| +2 inch W.C.J | +10 inch W.C. |
For higher pressure settings, see types ER/VH and ER/V-F.
Flow Capacity Chart
The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.
If you have any questions, feedback, or additional input, our team of experts will be glad to support you.
