Características
Función y descripción
Highly Developed Pressure Relief Valve
The PROTEGO® Type ER-V-LP valve is a sophisticated pressure relief valve Válvula de presión excesiva 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 Presión excesiva Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. and prevents excessive product Product Includes equipment, protective systems, devices, components and combinations of these. loss at pressures as high as close to the set pressure Presión de reacción 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 Recipiente 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 Carrera 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 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 Presión del tanque 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.
Dimensiones
To select the nominal size Diámetro 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 |
Dimensiones en mm / pulgadas
Selección de materiales
| 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
Tipo de bridas de conexión
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other types upon request
Modelo y especificación
The valve pallet Disco de la válvula 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 Amortiguador 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.
Diagrama de flujo volumétrico
Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.
