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.
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
Valve Pallet Technology
Patented Valve Pallet Technology Guarantees Excellent Tightness Resulting in the Lowest Possible
Product
Product
Includes equipment, protective systems, devices, components and combinations of these.
Losses and Reduced Environmental Impact
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
API Tanks
best technology for API tanks
Function and Description
Highly Developed Pressure Relief Valve
The PROTEGO® type ER-V-LP valve is a sophisticated
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 applications in which a high flow efficiency is of the essence. It is primarily used as an emergency pressure relief valve on storage tanks, vessels, 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 excessive
overpressure
Overpressure
Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure.
and prevents excessive product loss at pressures as high as close to the set pressure. It is designed to release particularly large quantities to prevent the
vessel
Vessel
Container or structural envelope in which materials are processed, treated or stored.
from rupturing in an emergency case.
Patented Valve Pallet Technology
The valve will start to open as soon as the set pressure is reached and only requires a 10% pressure increase or opening pressure differential until full lift. Continuous investments in and a commitment to research and development have enabled PROTEGO® to develop a new valve pallet technology for which a patent has been granted. This patented valve pallet technology enables the typical
safety valve
Safety valve
Valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges a quantity of the fluid so as to prevent a predetermined safe pressure being exceeded, and which is designed to re-close and prevent further flow of fluid after normal pressure conditions of service have been restored.
characteristics to be applied to low pressure ranges while also maintaining a low leakage rate.
Adopting this new patented valve pallet technology permits the valve to be set to just 10% below the maximum allowable working pressure of the tank and still vent the required flow.
Advanced Manufacturing Technology
Due to the sophisticated 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 above the common standards. Once the excess pressure is released, the valve re-seats and seals tight again.
Product Data and Features
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 | 343 / 13.50 | 406 / 15.98 | 483 / 19.02 | 533 / 20.98 | 597 / 23.50 | 635 / 25.00 | 699 / 27.52 | 813 / 32.01 | 837 / 32.95 |
| b | 378 / 14.88 | 399 / 15.71 | 409 / 16.10 | 440 / 17.32 | 455 / 17.91 | 464 / 18.27 | 481 / 18.94 | 556 / 21.89 | 571 / 22.48 |
Dimensions in mm / inches
Material selection
| Design | A | B |
| Housing | 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 |
| Valve pallet | Stainless Steel | Stainless Steel |
| Sealing | Stainless Steel | Stainless Steel |
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 set-to-operate pressures are achieved with Types ER/V and ER/VH (lever-operated) valves or Type ER/V-F ( spring Spring A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. -loaded) valves.Pressure valve in basic designER-V-LP
Additional special devices available upon request.
Settings
| DN 200 to DN 300 | +3.4 mbar | +40 mbar |
| +1.4 inch W.C. | +16 inch W.C. | |
| DN 350 to DN 700 | +3.4 mbar | +25 mbar |
| +1.4 inch W.C. | +10 inch W.C. |
For higher pressure settings, see types ER/V, 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.
