ER-V-LP
Emergency pressure relief valve
Features
10% Technology
for Minimum Pressure Increase up to Full Lift
Optimal Pressure Maintenance
Set Pressure Close to Opening Pressure for Optimum Pressure Maintenance in the System
Valve Pallet Technology
Patented Valve Pallet Technology Guarantees Excellent Tightness Resulting in the Lowest Possible Product Losses and Reduced Environmental Impact
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
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 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. It offers reliable protection against excessive overpressure 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 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 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 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
Dimensions
To select the nominal size (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 | 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
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”.
