Características
Función y descripción
Highly Developed Vacuum Relief Valve
The SV/E-1-0 Type PROTEGO® valve is a highly developed vacuum relief valve Vacuum relief valve A vacuum relief valve is used to ventilate a part of the system and protects it from impermissible underpressure. with excellent flow performance. It is primarily used as a device for relieving vacuum Vacuum Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. in tanks, containers, 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. . The valve offers reliable protection against vacuum and prevents in-breathing of air 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. .
Full Lift Technology
The device will start to open as soon as the set pressure is reached and only requires 10% overpressure Overpressure Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. to reach full lift Lift 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 allowed PROTEGO® to develop a low pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. valve which has the same opening characteristics as a high pressure safety relief valve. This “Full Lift Type” technology allows the valve to be set at just 10% below the maximum allowable working pressure of the tank and still safely vent the required mass flow.
Advanced Manufacturing Technology
Due to our highly developed manufacturing technology, the tank pressure Tank pressure Tank pressure is the pressure within a tank. is maintained up to set pressure with a tightness that is far superior to the conventional standard. This feature is achieved by valve seats made of high quality stainless steel and with precisely lapped valve pallets (1) or with an air cushion 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. (2) in conjunction with high quality FEP diaphragm Diaphragm A diaphragm is a thin layer of material, which has a large surface area. . The valve pallets are also available with a PTFE seal to prevent the valve pallets from sticking when sticky products are used, and they enable the use of corrosive substances. After the vacuum is released, the valve reseats and provides a tight seal again.
Dimensiones
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 | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" |
| a | 140 / 5.51 | 170 / 6.69 | 190 / 7.48 | 230 / 9.06 | 300 / 11.81 | 325 / 12.80 | 425 / 16.73 |
| b | 75 / 2.95 | 85 / 3.35 | 95 / 3.74 | 120 / 4.72 | 140 / 5.51 | 165 / 6.50 | 205 / 8.07 |
| c | 205 / 8.07 | 205 / 8.07 | 285 / 11.22 | 360 / 14.17 | 405 / 15.94 | 460 / 18.11 | 500 / 19.69 |
| d | 170 / 6.69 | 235 / 9.25 | 280 / 11.02 | 335 / 13.19 | 445 / 17.52 | 505 / 19.88 | 505 / 19.88 |
| e | 215 / 8.46 | 215 / 8.46 | 255 / 10.04 | 335 / 13.19 | 425 / 16.73 | 460 / 18.11 | 625 / 24.61 |
Dimensiones en mm / pulgadas
Dimensions for vacuum relief valve with heating jacket upon request
Selección de materiales para la vivienda
| Design | - | B | C | D |
| 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. | - | Steel | Stainless Steel | Aluminium |
| Heating jacket (SV / E-1-0-H...) | - | - | 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 |
| Sealing | - | PTFE | PTFE | PTFE |
Option: Housing with ECTFE- lining Lining Protective plastic lining with a defined minimum/maximum thickness to protect against aggressive mixtures (e.g., acid).
Design D and Special materials upon request
Selección de materiales para la válvula de vacío
| Design | A | B | C | D | E | F |
| vacuum range [mbar] [inch W.C.] | -2,0 up to -3,5 -0.8 up to -1.4 | <-3,5 up to -14 <-1.4 up to 5.6 | <-14 up to -35 <-5.6 up to -14 | <-35 up to -60 <-14 up to -24 | <-14 up to -35 <-5.6 up to -14 | <-35 up to -60 <-14 up to -24 |
| Valve pallet Valve pallet Valve pallet is the generic term for the assembly that rests on the valve seat. | Aluminium | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| Sealing | FEP | FEP | Metal to Metal | Metal to Metal | PTFE | PTFE |
Special materials(Alu-coated, Titanium, Hastelloy) and higher vacuum settings 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 is weight-loaded. Higher vacuum can be achieved upon request with a special spring Spring A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. -loaded design.There are two different designs:
Additional special devices available upon request.
Settings
| Vacuum: | -2.0 mbar | -60 mbar |
| -0.8 inch W.C. | -24 inch W.C. |
Higher vacuum settings upon request.
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”.
