Caractéristiques
Fonction et description
Highly Developed Pressure Relief Valve
The PROTEGO® Type ER-V-LP valve is a sophisticated pressure relief valve Soupape de surpression 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. It offers reliable protection against excessive overpressure Surpression 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 Pression de réponse 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 release particularly large quantities to prevent the vessel Récipient 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 Course Lift is the actual travel of the valve pallet from the main valve out of the closed position. . 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 Pression de la cuve 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.
Dimensions
To select the nominal size Diamètre nominal 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 | 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 Clapet Valve pallet is the generic term for the assembly that rests on the valve seat. 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 Ressort A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. -loaded) valves.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”.
